VERTEBBATA. 281 



Discusses various restorations of the Plesiosaurian pectoral arch, and 

 illustrates his views by a comparison with Chelone. The British Fle~ 

 siosauHa are divided into the restricted genus Plesiosaurus, with a large 

 interclavicle, and the following new genera, which want the intercla- 

 vicle — Eretmosaurus, Colymhosaui-us, and Muramosaurus (see above). 

 A new genus, lihonialeosaurtis, is proposed for the species named Plesio- 

 saurus Cramj^toni by Mr. Baily and Dr. Carte. L. C. M. 



Seelby, H. G. On the Base of a large Lacertian Cranium from the 

 Potton Sands, presumably Dinosaurian. Quart. Journ. Geol. Soc. 

 vol. XXX. pp. 690-692, pi. xliv. 



The fossil is interpreted as the anchylosed basioccipital and basi- 

 sphenoid of a Dinosaur. A long, deep, ovate cup on the upper surface 

 of the basisphenoid is considered to be the base and anterior por- 

 tion of the brain-case. The author regards the bone as indicating that, 

 in at least one order of Dinosauria, the bones of the base of the cranium 

 resemlaled Hatteria rather than birds. The fossil is named Cratero- 

 saurus ^ottonensis, L. C. M. 



. On Cervical and Dorsal Yertebrse of Croccdilus cantahrigiensis 



(Seeley), from the Cambridge Upper Greensand. Quart. Journ. 

 Geol. Soc. vol. XXX. pp. 693-695. 

 " The anterior inclination of the cervical centrum, and the depression 

 of the dorsal neural arch, . . . . are the most distinctive characters of 

 Crocodilus cantabrigiensis." 



— . On the Pectoral Arch and Fore limb of OjphtTialmosawus, a 

 new Ichthyosaurian Genus from the Oxford Clay. Quart. Journ. 

 Geol. Soc. vol. XXX. pp. 696-707, pis. xlv., xlvi. 



On the Tibia of Megalomis, a large Struthious Bird from the 



London Clay. Quart. Journ. Geol. Soc. vol. xxx. pp. 708-710 

 [with a woodcut]. 



Studer, Th. [Notes on Bones of Domestic and Wild Animals from 

 Locras and Masrigen.] Indicateur des antiquites suisses, p. 607. 



Taylor, J. E. On the occurrence of Elephant-remains in the Base- 

 ment Beds of the Bed Crag. Hep. Brit. Assoc, for 1873, Sections, 

 p. 91. 

 The tooth referred to was peculiar, from the width of the ridges and 

 its singular resemblance to the Mastodon type. The author stated that 

 elephant-remains do occur in the bed in question — a fact which had 

 been previously doubted. W . T. 



Traqtjair, R. H. Description of CycIoptycJiius carbonarim, Huxley, 

 from the Coal-measures of North Statfordshiro. Geol. Mag. dec. 2, 

 vol. i. pp. 241-246, t. xii. . 



The sti-ucture is fully described from specimens in Mr. Ward's col- 

 lection, and a place among the Paloeoniscida) is assigned to this fish. 



