The grey tints of the neck passing forwards and downwards in front of the pinions, when closed (as shown in Gould's plate), cover a more extended space, are darker and more distinctly barred, but in both the throat, breast in front and under parts, generally, are of a spotless white. The feathers on the back and wing-coverts have the terminal margins much brighter, and the mottled appearance is therefore more striking. The outer webs of the primaries are a more pronounced black; and the sixth primary, as shown in the woodcut, has an oblong white patch on the outer web besides the white tip; the white of the inner web passing round the tip of the feather, where it joins on to a black spot having this oblong white patch just above it. I could find no trace of this peculiarity in the corresponding feather of my own specimen until submitted to a very powerful light, when it was just possible to detect a lighter tinge on the web in the spot where the white patch would come, but no one could detect this without purposely looking for it. The tail-feathers have the black on the anterior portion, like the primaries, of a richer hue, and the white marginal lines are much more vivid. The description given by Mr. Harting of the Thames specimen agrees very closely with my own, and though the sex was not ascertained, it was probably, I should say, a female. Like mine also, it had no "white spot of an oval shape" on the outer web of the sixth primary. *Birds of Middlesex,' p. 252. It would seem, however, that the young of this species differ not a little, inter se, independent of any sexual differences, as the first Irish specimen (Belfast Bay, September, 1822), recorded and described by Thompson, exhibited the following features, not observable in either, or in one only, of the Norfolk birds, and not in that killed on the Thames. The sex does not seem to have been ascertained. (1) A narrow line of "greyish black closely encircling the front and lower part of the eye." "Space immediately above the eye" white, as in one only of the Yarmouth birds. (2) Back, wing-coverts, etc., "blackish grey, tinged with yellowish brown." On the outer web of the sixth primary "a white spot of an oval shape appears," as in Mr. Connop's Yarmouth bird. (3) "Under part of throat and upper part of the breast pale ash colour." In both Norfolk birds the under part of the throat, and passing downwards to the vent, between the grey patches that front the carpal joint on either side when the wing is closed, is a pure unbroken white. The measurements of the two Norfolk birds are as follows, those of the female taken in the flesh, and the other when stuffed :— The hind toe and claw are exceedingly small, and Thompson points out that it is "placed so high that the point of the nail does not reach within one and a half line of the ground." Tailfeathers twelve; the irides and bill in my bird were dark brown, the legs and feet a soiled flesh-colour. XI. LISTS OF NORFOLK NAIADACEE AND CHARACEÆ. BY ARTHUR BENNETT, F.L.S. (Communicated by H. D. Geldart.) Read 28th March, 1882. [MR. BENNETT has kindly placed the following lists at my disposal. It is only necessary to remark that his provinces of "East" and "West" Norfolk refer to the division of the county adopted by Mr. H. C. Watson in his privately printed 'Topographical Botany,' in which the County is divided by the mathematical line of one degree of east longitude, and not to the divisions used by our Society.-H.D.G.]. 17. P. PECTINATUS. Linn. E. Nor folk, Buckenham ! P. PECTINATUS, var. PSEUDO- of pectinatus." P. PECTINATUS, var. SCOPARIUS. Wall. MARINUS, Huds., non W. Norfolk ! Linn! E. Norfolk, Runham! W. Norfolk, Trimmer's 'Flora.' 18. P. FLABELLATUS. Bab. E. Nor |