6*2 CBOCODILIA. 



38976. The first sacral vertebra. Figured by Owen, op. at. pi. v. 

 (Fig.) fig. 6. 



38986. The distal extremity of the left humerus. 

 38985. A sacral rib. 



38987. An undetermined bone. 



The following specimens may probably be referred to this form. 



35691. An imperfect vertebra, of very large size. Purchased, 1859. 



43195. An imperfect dorsal or lumbar vertebra. 



Wetherell Collection. Purchased, 1871. 



38989. The distal half of the right femur. Bowerbanlc Collection. 



38993. Five dermal scutes. Same history. 



28507. A mass of matrix, containing numerous vertebrae and im- 

 perfect limb-bones of a small individual. 



Dixon Collection. Purchased, 1847. 



LONGIROSTRINE SECTION. 



The cranium with the facial portion elongated into a rostrum, 

 and its alveolar borders straight; the nasals never reaching the 

 nares, and frequently separated from the premaxillae ; the supra- 

 temporal fossae larger than in the Brevirostrine Section, and some- 

 times larger than the orbits ; the premaxillary fissure slit-like ; on 

 the palate the posterior border of the premaxillae projecting into the 

 maxillae ; the mandibular symphysis very long, and embracing part 

 of the splenial. The teeth numerous, and but slightly differen- 

 tiated, but the 3rd upper and 4th lower generally enlarged. No 

 ventral armour in recent forms ; dorsal scutes very wide, with 

 slight keels. Frequently an additional upper tooth between the 

 proper first and second. 



Genus TOMISTOMA, S. Miiller \ 



Syn. Rhynchosuchus, Huxley 2 . 

 Including Melitosaurus, Owen 3 . 



Gavialosuchus, Toula and Kail i . 



The premaxillaB articulating with the nasals ; both the 1st and 



1 Arcluv f. Nat. 1846, vol. i. p. 122. 



2 Journ. Linn. Soc. [Zool.] vol. iv. p. 16 (1859). 



3 Hulke, Quart. Journ. Geol. Soc. vol. xxvii. p. 31 (1871). 



4 Anzeig. k. Ak. Wiss. Wien, 1885, p. 109. 



