10 Rejot. 
RBPTILIA AND BATRACHIA. 
Gavialis gangeticus , Gm. : on fossil remains from the Siwalik Hills ; 
Lydekker, Pal. Ind. (10) iii, p. 220, pi. xxx. G. leptodus , Falc, & Cautl. 
(foss), described ; id. ibid. p. 226, pi. xxxii, figs. 2-4. G. hysudricus, 
p. 222, pis. xxxi, figs 3 & 4, & xxxii, fig. 1, curvirostris, p. 224, pi. xxxi, 
figs. 1-3, and pachyrhynchus , p. 227, pi. xxxiii, figs. 1, 2, & 4, n. spp., id. 
ibid., Siwalik Hills. 
Bhamphosuchus , n. g. Skull elongated into a rostrum ; teeth numerous ; 
nasals apparently separated from the premaxillae ; 1st mandibular tooth 
biting into a notch, and 4th into a pit in the cranium ; maxillary teeth 
biting entirely on the outer side of the mandibular ; splenial entering 
largely into mandibular symphysis ; extremity of rostrum not expanded, 
facial profile straight. Lydekker, t. c. p. 229. For B. crassidens , Falc. & 
Cautl. (foss.), p. 230, pis. xxxiii, fig. 5, & xxxiv. 
Goniopholis undidens , n. sp. (foss.), for a tooth from the Upper Jurassic 
of Wimille, N. France ; de la Moussaye, Bull. Soc. gdol. (3) iii [1885], 
p. 53, figs. 
Hyposaurus derbianus, n. sp. (foss.), Cope, P. Am. Phil. Soc. xxiii, 
p. 15, Brazil. 
ICHTHYOSAURI A. 
Baur, G. Bemerkungen fiber Sauropterygia und Ichthyopterygiu. Zool. 
Anz. ix, pp. 245-252. 
The extremities of Ichthyosauria and Plesiosauria do not represent a 
primitive structure ; like the extremities of the Cetaceans, they are 
secondary structures, produced by adaptation to aquatic life. In other 
words, the ancestors of these marine types were terrestrial Reptiles. 
Thompson, D’Arcy W. On the Hind Limb of Ichthyosaurus, and on the 
Morphology of Vertebrate Appendages, Rep. Brit. Ass. 1885, 
pp. 1065 & 1066, and J. Anat Phys. xx, pp. 532-535, figs. 
The hind limb of Ichthyosaurus ( platyodon ) is regarded as perhaps the 
most primitive limb known in Vertebrates above fishes. 
Woodward, A. S. Note on the Presence of a Columella (Epiptery- 
goid) in the Skull of Ichthyosaurus. P. Z. S. 1886, pp. 405-408, 
figs. 
Ichthyosaurus quadriscissus, Quenst. Notes on and photograph of a 
very perfect specimen in the Lausanne Museum ; Bull. Soc. Vaud. (2) 
xxi [1885], pp. 8-12, pi. i. 
PLESIOSAURIA. 
See Baur, supra. The author, p. 246, proposes to establish a new 
family, Macromirosauridce, for Macromirosaurus, Curioni, and Neusticosau- 
rus, Fraas. 
Plesiosaurus , Con. H. Schroder describes remains of P. helmersenii, 
Kiprij., p. 310, pi. xv, and ichthyospondylus , Seeley, p. 315, pi. xvi fig. 2, 
from the Upper Chalk of the Baltic, and P. helmersenii (?), p. 325, 
