362 



FAUNA ANTIQUA SIVALENSIS. 



these bones belong ? This is a question not easily to be solved 

 at present. The characters of the humerus would determine 

 the animal to have been allied to Emys and Testudo ; but 

 on the ragged edge of the buckler fragments, as described 

 above, we see every appearance of the attachment of a soft 

 substance, and the resemblance is very strong to Trionyx. 

 It would appear that part of the case was cartilaginous, as in 

 that genus, and not completely ossified. Some large frag- 

 ments have the character of a line of marginal plates, which 

 would separate them at once from Trionyx, and possibly the 

 cartilaginous parts were confijied to the plastron. 



II. — On the Osteological Characters and PALiEONTO- 

 LOGicAL History op the Colossochelys Atlas. 

 Abstract op an Extempore Communication to 

 Zoological Society op London, March 26th and 

 May 14th, 1844.i 



Part I. 



A communication was made by Dr. Falconer, conveying the 

 substance of a paper by Captain Cautley and himself on the 

 osteological characters and palseontological history of the 

 Colossochelys Atlas, a fossil tortoise of enormous size, from 

 the tertiary strata of the Sewalik hills in the north of India 

 — a tertiary chain apparently formed by the detritus of the 

 Himalayah mountains. 



A great number of huge fragments derived from all parts 

 of the skeleton except the neck and tail were exhibited on 

 the table, ilhistrative of a diagram by Mr. Scharf of the 

 animal restored to the natural size. (See Pig. 12.) 



Fig. 12. 



EESTOBATION OF COLOSSOCHELYS ATLAS, EEDVCED. 



' Reprinted from Proc. Zool, Soc. Lend. 1844, Part xii. pp. 54 and 84. 



