CKOCODILID^E. 



71 



Genus RHAMPHOSUCHUS, Lydekker \ 

 Premaxilke apparently separated from the nasals ; 1st lower 

 tooth received into a notch, and 4th into a pit in the cranium ; 

 upper teeth biting externally to the lower ; and the facial profile 

 straight ; supratemporal fossa and entire orbit unknown. 



Rhamphosuchus crassidens (Falconer and Cautley 2 ). 



S} r n. Crocodilus (Leptorhynchus) crassidens, Falconer and Cautley 3 . 

 Garialis crassidens, Lydekker 4 . 



This is the only known species. The premaxillae are not ex- 

 panded, and there are pits in the cranial rostrum for the summits of 

 the majority of the lower teeth, of which the 4th is enlarged. 

 Total length probably between 50 and 60 feet. 



All the following specimens are from the Pliocene of the Siwalik 

 Hills : and, unless it is otherwise stated, belong to the Cautley 

 Collection. Presented, 1840. 



39802. The greater portion of the rostrum, showing the upper and 

 {Fig.) lower jaws in apposition. This specimen is the type, and 



is figured in ' Falconer's Pakeontological Memoirs,' vol. i. 



pi. xxix. fig. 1, and by the present writer in the ' Palae- 



ontologia Indica' (Mem. Geol. Surv. Ind.), ser. 10, vol. iii. 



pi. xxxiv. 



39804. The middle portion of the cranium. This specimen (wood- 



(Fig) cut, fig. 11) is figured by the writer, op. cit. p. 232, 



fig. 1. Presented by G. IT. Smith, Esq., 1843. 



Fig. 11. 



Bhamphosuchus crassidens.— Right lateral aspect of middle of cranium ; from 

 the Pliocene of tke'Siwalik Hiils. \. (From the ' Palasontologia Indica.') 



1 Pakeontologia Indica (Mem. Geol. Surv. Ind.), ser. 10, vol. iii. p. 2°9 

 (1886). 



2 Trans. Geol. Soc. ser. 2, vol. v. p. 503, note (1840).— Crocodilus (Lepto- 

 rhynchus). a Loc. cit. 



4 Journ. As. Soc. Beng. vol. xlix. pt. 2. p. '.YS (1880). 



