Proceedings of the Academy of Natural Sciences of Philadelphia, Том 27Academy of Natural Sciences of Philadelphia, 1875 "Publications of the Academy of Natural Sciences of Philadelphia": v. 53, 1901, p. 788-794. |
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Стр. 140
... Helix thyroides in one hand , and offering to him with the other some food ( a piece of carrot is always acceptable ) , one can readily see with the naked eye the two organs here treated of . Above the 140 PROCEEDINGS OF THE ACADEMY OF.
... Helix thyroides in one hand , and offering to him with the other some food ( a piece of carrot is always acceptable ) , one can readily see with the naked eye the two organs here treated of . Above the 140 PROCEEDINGS OF THE ACADEMY OF.
Стр. 141
... Helix thyroides from above , one readily notices at the extreme anterior part , close against the outer integu- ment , a prominent oval body . This is called the buccal mass . is easily cut away from the animal , and will be found to ...
... Helix thyroides from above , one readily notices at the extreme anterior part , close against the outer integu- ment , a prominent oval body . This is called the buccal mass . is easily cut away from the animal , and will be found to ...
Стр. 148
... Helix , Geomo- lacus , Letournexia , 31 Peltella , Xanthonyx , Simpulopsus , Pfeif- 23 32 27 26 29 34 1 See Semper , 1. c . No doubt other genera of disintegrated Helix will be found to be grouped here . I propose at present to remove ...
... Helix , Geomo- lacus , Letournexia , 31 Peltella , Xanthonyx , Simpulopsus , Pfeif- 23 32 27 26 29 34 1 See Semper , 1. c . No doubt other genera of disintegrated Helix will be found to be grouped here . I propose at present to remove ...
Стр. 163
... gradual and regular decrease from the first to the last mar- ginal tooth . The marginal teeth in Zonites , and , indeed , all the Vitrininæ , are more separated than in Helix , and the separate rows NATURAL SCIENCES OF PHILADELPHIA . 163.
... gradual and regular decrease from the first to the last mar- ginal tooth . The marginal teeth in Zonites , and , indeed , all the Vitrininæ , are more separated than in Helix , and the separate rows NATURAL SCIENCES OF PHILADELPHIA . 163.
Стр. 164
Academy of Natural Sciences of Philadelphia. more separated than in Helix , and the separate rows are more widely removed the one from the other , especially near the outer margin of the membrane . Though the simple aculeate form of ...
Academy of Natural Sciences of Philadelphia. more separated than in Helix , and the separate rows are more widely removed the one from the other , especially near the outer margin of the membrane . Though the simple aculeate form of ...
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Часто встречающиеся слова и выражения
abdomen adult animal Baird band bars basal base of attachment bifid bird blackish blunt bone brown Carnivora characters color concentricus conia Cope Costa Costa Rica Creodonta cretaceous Cricetodipus culmen cutting point dentition Dipodomys distinct dusky edge Eocene examined extreme marginal Falco feathers figure fore genera genus Geomys gilvicollis gray Helix hind I. V. Williamson Fund inches incisors inner insects larvæ lateral teeth Leidy length less Lingual dentition lingual membrane lower marginal teeth median line median projection Micrastur middle toe molar Morse narrow nearly oblique ochraceous outer paralysis perfect laterals Perognathus Phila plumbeous portion Posterior wings premolar Prof pupa Rathmell Wilson remarks ribs ruficollis rufous RUSCHENBERGER shade shell side cusps side cutting point Society species specimens spots squamosal stout subgenus subterminal surface tail tail-coverts tarsus tibiæ tion transverse upper usually vertebræ whitish Zonites
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Стр. 411 - ... but slight (except beneath the floor of the neural arch), until it falls rather abruptly into the axial perforation. In an (?) anterior dorsal it is as widely excavated at the border as the posterior funnel. Another peculiarity is the absence of the processes of the centrum ; and a small capitular articulation is seen sessile on the border of the cup of two of the dorsals. "The axis* has a singular form, owing to the tubular perforation which continues the posterior excavation to the anterior...
Стр. 408 - Sphenodnn of New Zealand. The bones of the limbs and scapular arches are so decidedly reptilian, and so unlike those of any Batrachia with which we are yet acquainted, that I am disposed to refer them to the former class. And as there are several points in which the fossils resemble the order Rhynchocephalia, I refer them provisionally to that neighborhood. They constitute the first definite indication of the existence of animals of that type in the western hemisphere.
Стр. 196 - ... cusps, but well-developed side cutting points, and a stout, short median cusp, bearing a cutting point which does not reach the lower margin of the base of attachment.
Стр. 412 - ... superior articular facets. • There is no true hypapophysis of the axis, and the only indication of lateral processes is a small articular facet on each side on the lower part of the rim of the posterior funnel. These may have been related to rudimental cervical ribs. The neural arch is broken off. The dorsal vertebrae have their sides somewhat contracted ; in one specimen the inferior face is rounded, in another, which I suppose to belong to a different part of the column, it is longitudinally...
Стр. 231 - ... long cutting points, also in the presence of several teeth showing a gradual change from the laterals to the marginals. A full description and detailed figures of its dentition are given by me in Ann. Lye. Nat. Hist. NY, XL, 41, pi.
Стр. 412 - ... facets. There is no true hypapophysis of the axis, and the only indication of lateral processes is a small articular facet on each side on the lower part of the rim of the posterior funnel. These may have been related to rudimental cervical ribs. The neural arch is broken off. The dorsal vertebrae have their sides somewhat contracted ; in one specimen the inferior face is rounded, in another, which I suppose to belong to a different part of the column, it is longitudinally acute. In this and...
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Стр. 26 - The simplicity of structure resembles, on the other hand, that found in the opossum and various Insectivora, Rodentia, and Quadrumana, and in the Proboscidia, most of which have the generalized type of feet. The structure indicates that the carnivorous genera named were plantigrade — a conclusion which is in conformity with the belief already expressed, that the mammalia of the Eocene exhibit much less marked ordinal distinction than do those of the Miocene or the recent periods. It is, indeed,...
Стр. 266 - Until such are discovered, there will be much ground for supposing that the camels of the old world were derived from American ancestors ; while the presence of the llamas in the existing South American fauna, indicates the absence there of the conditions which caused their extermination from North America.