STRUCTURE OF SEWALIK HILLS. 35 



quantity. Most of the former are perfect, and as sharp in 

 their outline as when the animals existed ; and even in the 

 fragments, the sharpness of the fracture proves that they 

 were quietly deposited in the sediment in which they are 

 found. The followiiig is a list of the fossils already disco- 

 vered in the marl : — 



Mammalia. 



Pachyclermata . . Teeth, and the remains of a species of Anthracothe- 



rkim. 

 Camivora .... Genera doubtful ; hut some of the teeth correspond 



with the third incisor of the bear. 

 Modentia .... Rat, and a small variety of castor. 

 Ru7ni)iantia . . . Deer, several varieties, and one molar of a very 



small species. 

 Solipeda .... Horse, one incisor, and one molar from the right 



side of the upper jaw : they exhibit a peculiarity 



in the form of the enamel flexures. 



Reptilia. 



Crocodilia . . . . Gharidl. (GawaZ of naturalists). Teeth and bones 



in abundance. 

 Crocodile. Teeth, in great abundance, fragments 



of the osseous plates, vertebrae, and other bones. 

 Chelonia .... Emys. Fragments of the plates of the back very 



perfect ; also ribs, with the attached osseous part 



of the buckler. 

 Trionyx. Ditto, ditto. Some marked differences 



in the form and position of the rugous surface of 



the fragments of the buckler, may hereafter point 



out a variety of species. 



Pisces. 

 Vertebrce and Scales — The latter doubtful. 



Testacea. 



Bivalve .... Imperfect, but resembling Unio. 

 Univalve. , . . A cast resembling that of the P«/«(?^wa of the present 

 fresh-water.i 



Besides these more easily determinable remains, there have 

 been found a number of incisor teeth, which I cannot assign 

 to any genus ; also quantities of bones, in fragments, and 

 portions of ribs, one of which must have belonged to a large 

 animal ; also vertebrse, metatarsal or carpal bones, &c. With 

 the exception of the teeth, the remains are generally in frag- 

 ments, and separated ; nor does it appear probable that we 

 shall meet with anything approaching to a complete skeleton. 



' The only univalve which has been , Nahun. I have entered it here, eonsi- 

 yet found in the marl is the cast above- dering, as I do, that the deposits are 

 mentioned, from the rock north of ' identical. 



D 2 



