214 Gen. Hardwicke and Mr. Gray 



scribe them also, stating the fact, at the end of the description, 

 of their being characterized from the drawing alone. 



Hitherto only twenty-seven species of this kind of Reptiles 

 have been described as inhabiting India. Of these, ten are found 

 in this collection; many of the others rest only on the authority of 

 Seba, whose errors in regard to locality are discovered every day ; 

 and to these have been added thirteen new species, containing 

 amongst them six new types of form, which have hitherto not 

 been found in any other country; indeed all the species here 

 described are peculiar to India, except the Chameleon, the IVloni- 

 tor, and one of the Crocodiles, which are common to Africa. 

 The latter species proves M. Cuvier's opinion on the subject of the 

 geographical distribution of the Crocodiles to be erroneous ; for 

 that naturalist, to whom we are indebted for the unravelling of the 

 species of this genus, appears to have thought that each species 

 •was peculiar to a distinct country. The specimens and drawings 

 of this collection, however, clearly demonstrate that the common 

 Crocodile liitherto regarded as peculiar to Africa, is also spread 

 over the continent of India. 



The genera are arranged according to the Synopsis of Genera 

 published in the Annals of Philosophy, and in the Philosophical 

 Magazine for June, 1827. 



As it is the intention of the writers of the present article to 

 publish figures, with detailed descriptions, of each of the unpub- 

 lished and unfigured species, the observations of Zoologists on any 

 of the subjects noticed in it, will be most thankfully received. 



ORDER. I. EMYDOSAURI. 



Fam. 1. CRocoDiLiDiE. 

 Gen. 1. Gavialis, Oppel. 



1. G. Gangeticus. 



Lacerta Crocodilus. EJk. Phil. Trans, xlix. 639. 

 Crocodilus. n. 40. Gronov. Gazopli. ii. p. 11. 



longirostris. Schneid. Jniph. 160. 



Gangeticus. Cuv. ylnn. Mus. x,66. 



