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about inch broad, tapering gradually in a very fine incurved point, scarcely exceeding 3 lines on the upper scales, very short or quite obsolete on the lower ones. Female cones not seen.

Habitat.-In low, flat ground between the Upper Richmond and Clarence Rivers districts, where it was discovered in 1861. This is one of the most elegant of the species, and may be readily known in a living state from all other species by its slender and graceful habit and the bright pale yellow colour of the base of the pinnæ. No fruiting cones have as yet been seen, but all the many plants of this in cultivation in the Sydney Botanic Garden produce male cones in abundance.

4. Macrozamia secunda, C. Moore.-Trunk not raised above the ground, ovoid in shape and slightly woolly, covered with old imbricate scales. Leaves usually quite glabrous, sometimes glaucous, from 2 to 3 feet long, sharply recurved near the point. Rhachis quite flat on the upper side and rounded below. Pinnæ numerous, very close together, rising from the rhachis in a rather erect or vertical form, about 6 inches long and not more than 3 lines broad; very distinctly marked on the under surface with from 8 to 9 parallel striæ, tapering sharply to a pungent point, nearly all of the same length till towards the point where they gradually become shorter; of a dull reddish colour at the base. Fruiting cones about 6 inches long and 3 inches in breadth, scales with very sharp points at the base, very gradually increasing in length upwards.

Habitat.-Near Reedy Creek, east of Mudgee, where it was first found in 1858, but without fruit. Again found with only one old fruiting cone not far from Dubbo, by Rev. J. Milne Curran, in 1883, who sent living plants to the Sydney Garden. This species both in habit and character more nearly approaches M. corallipes than any other, but its more spreading habit, the vertical character of the pinnæ, and the non-contorted recurved pointed falcate leaves at once distinguish it from all others.

5. Macrozamia corallipes, Hook.-Trunk_not_raised above the ground, about 8 inches in diameter, subspherical. Leaves 12 to 18 inches long, somewhat rigid, forming a rather contracted crown. Pinnæ 4 to 5 inches long, 4-inch broad, linear-lanceolate, acute but hardly pungent, dark green above, pale below, and 8 to 10-nerved beneath, inserted obliquely in the rhachis with a bright red, rather swollen petiolule. Male cone glaucous green, 5 to 6 inches long, by nearly 2 inches broad. Scales tapering into an incurved spiny point, which is generally short and rounded on the lower scales, increasing gradually in length towards the top, or in some instances quite obsolete. Female cone glaucous green, 4 to 6 inches long, by 3 to 4 inches broad. Points short on the lower scales, longer towards the top, and very variable in length, as on the male cones, sometimes wholly absent. Habitat. First discovered between the General Cemetery and the Liverpool Road, near Sydney; plentiful north of Penrith on the Hawkesbury, and also on dry ridges between Glenbrook and Blaxland, or Wascoe's, on the Western Road. A low-growing plant, seldom more than 2 feet high, often very rigid in habit and usually with leaves very much contorted.

6. Macrozamia Fawcetti, C. Moore.-Trunk and base of the petioles covered with a dense tomentum. Leaves varying from 2 to 4 feet in length, of a dark glossy green colour above, paler beneath. Glabrous in an adult state, hairy when young. Pinnæ about three-quarters of an inch in breadth and from 6 to 7 inches in length, semifalcate, broader upwards, and terminating with an abrupt falcate point, which is slightly but sharply toothed. Lower part of the rhachis flat on the upper surface, rather keel-shaped below, gradually rounding in form

upwards till it becomes almost terete towards the apex. Male cones on rather long peduncles, woolly at the base, above 8 inches long and 2 inches broad; scales flat, terminating abruptly with sharp points. Fruiting cones not seen.

Habitat.-On high ground on the upper part of the Richmond; discovered by C. Fawcett, Esq., P.M. Very little is known of the habit of this species. Only freshly-gathered leaves and old male cones have as yet been seen, but this proves that it is very different from any species hitherto described.

7. Macrozamia flexuosa, C. Moore.-Trunk never raised above the ground; about 8 inches in length and 5 inches in breadth, closely imbricated at the base by the old petioles, and slightly woolly. Leaves usually spirally twisted, of a flexuous habit, about 2 feet long. Pinna linear, tapering into an acute point, flexible, 6 to 8 inches long, and one quarter of an inch in breadth. Rhachis glabrous, raised on the upper surface between the rows of pinnæ, smooth and round below. Fruiting cones about 6 inches long, 3 inches in breadth, ovate in shape, on short, smooth peduncles. Scales broadly rhomboidal, with points short at the base, which increase in size upwards, and are nearly an inch in length towards the top. Male cones from 6 to 7 inches long, and about 2 inches in breadth. Scales quite pointless at the base, but with rather long and sharp points towards the apex.

This plant, which grows plentifully between Raymond Terrace and Stroud, is in character and habit of growth very different from any other species known to me, and is, in my opinion, entitled to be considered as a distinct species.

8. Macrozamia Paulo-Gulielmi, F. v. M.-Trunk scarcely raised from the ground, covered with the woolly imbricate base of the old petioles. Leaves glabrous, 1 to 3 feet long, the rhachis narrow but often flat on the top. Pinnæ numerous, very narrow and often almost terete, contracted and sometimes callous at the base, the longer ones 6 to 8 inches long and 1 to 1 line broad, thick and obscurely veined. Cones on woolly peduncles of 1 to 3 inches, the males oblongcylindrical, scarcely above 3 inches long, the scales about 4 lines broad, somewhat thickened at the apex, with a short point. Fruiting cones about 4 inches long and fully 2 inches thick, the larger scales about 1 inch broad and rather thick, those of the lower part of the cone narrower and thicker, the apex almost rhomboidal, with a very short point.

The only habitat given for this plant in New South Wales is a place in New England, where it was collected, according to the Flora Australiensis, by a Mr. C. Stuart. Plentiful in many places in Queensland.

9. Macrozamia tridentata, Lehm.-Base of the petiole covered with a woolly tomentum. Leaves upwards spirally twisted, sometimes slightly hairy. Pinnæ numerous, inserted marginal on the rhachis, three-quarters of a foot to 1 ft. long, reduced at the base to spiny teeth, upper pinna with 2 or 3 short and sharp teeth at the apex. Male cones 6 to 10 inches long, 1 inch to 1 of an inch broad. Scales rhomboidal-cuniat, with spiny points about half an inch long.

Habitat.-Found near the mouth of the Richmond River in 1861. The specimens, then collected and placed in the herbarium of the Sydney Botanic Gardens, have since been destroyed by damp and insects; but the description given of this species by Baron von Müeller, in vol. iii, p. 38, of his Fragmenta, under the name of M. Miquelii, may be relied on.

10. Macrozamia heteromera, C. Moore.-Trunk small, from 6 to 8 inches long, and about half as broad, covered with a reddish-coloured wool, never rising above the ground. Leaves seldom more than 2 feet long, of an erect habit, never spreading; often, but not always, spirally twisted, sometimes glaucous, but usually of a light green colour; glabrous, or with a few tufts of hairs at the base of the pinnæ. In a young state, sparingly covered with rather long hairs, which disappear towards maturity. Pinnæ simple or variously forked, variable in length, usually about 6 inches long and of an inch in breadth, gradually tapering towards the base and to a sharp point at the top; when divided the segments become very narrow. Rhachis smooth on the upper surface, rounded below, bearing the pinnæ rather far apart at the base, but becoming closer upwards. Male cones, on an average, 10 inches in length and 2 inches in breadth. Scales tapering into a short acute point. Fruiting cones when bearing seed, above 7 inches in length and at least 4 inches in breadth, smaller when in an infertilized state. Scales broad, tapering into a short point, much depressed as in the male cones below the point. Peduncles short, covered with a fine wool at the base. Habitat.-Among the Warrenbungle ranges and on the Castlereagh River country. Discovered in 1858; since collected near Rocky Glen, between Coonabarabran and Gunnedah. Very variable in habit and appearance, but always with the same characteristics as furnished in this description. a. Macrozamia heteromera, var. glauca.-Very different from the typical form. Leaves longer, less rigid, always glaucous and quite glabrous, bearing a few simple pinnæ at the base of the rhachis, all the others are at least once forked, seldom more. Upper side of the rhachis towards the base marked by a slightly raised edge midway between the rows of pinnæ. Fruiting cones about 9 inches in length and 5 inches in breadth.

This remarkable variety has only been collected near Narrabri, where it was found by Mr. Betche sparingly on sandy ridges; it is said, however, to be abundant in the Nandewar ranges, about 20 miles distant.

B. Macrozamia heteromera, var. tenuifolia.-More rigid and of a neater habit than either of the preceding forms. Leaves usually glabrous, and of a dark green colour. Pinnæ narrow, usually twice forked, and bright red at the base.

Habitat.-In mountainous districts near Tamworth; collected by Mr. Betche.

New Double Stars.

By H. C. RUSSELL, B.A., F.R.A.S., Government Astronomer.

[Read before the Royal Society of N.S. W., 5 September, 1883.]

THE following list of 130 new double stars, recently found, is intended as supplementary to my previous paper upon double stars. The measurements have been made by the same observers and instruments and under similar conditions to those described in the previous paper, and it seems unnecessary to repeat what was then said. Many of these are of great interest and beauty, but the majority are small stars. They have been found, some with the large instrument used by myself, others by Mr. Hargrave, using the 7-inch equatorial. The star No. 163 in my previous list has been examined, and the R. A found to be 11h. 14m.

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