18 EEPTILES. 



e. In spirits. Very young, like a, h. N. America. Presented by 



the Earl of Orkney. 

 /. In spirits. Young, like a, h. N. America. Presented by the 



Trustees of the Roy. Col. of Surgeons. 



Var. ? Spot larger ; vertebral series broad ; transverse streak on 

 back of neck not united to the foot-band ; no appearance of reddish 

 dorsal streak. Perhaps a species. C. tergeminus, var. P 



a. In spirits. N. America, Canada. Presented by J. Cruickshank, 

 Esq. 



2. Say's False Rattle-snake. Crotalophorus tergemious, 

 Holbrook, N. Arner. Erp. iii. 29, t. 5. Crotalus tergeminus, Say^ 

 Longs Exped. Rock. Mount, i. 499. Harlan^ Med. and Phys. Res. 

 135. C. miliarius, var. Schlegel^ Phys. Serp. 569. 



Olive or cinereous, with three rows of dark brown spots ; the 

 vertebral series broad, oblong, transverse, with a broad streak ending 

 in a transverse band behind, on each side of the back of the neck : 

 beneath dusky, varied ; cheek streak broad, distinct. 



, Inhab. N. America, Rocky Mountains, Say. Mus. Dr. Hol- 

 brook. 



Perhaps a variety of the former, or the same as the variety spe- 

 cimen a, but the bands on the nape are united behind to the first 

 spot. 



3. Kirtland's Rattle-snake. Crotalophorus Kirtlandi, //^r;/- 

 brook, N. Amer. Erp. iii. 31, t. 6. 



Black, varied with dusky brown, marked with three series of 

 large dark spots, separated by a series of light brown rings on the 

 back and vertical lines on the flanks, which are hardly visible in old 

 animals. 



Inhab. N. America, Ohio and Michigan, Kirtland. Cab= Dr. 

 Holbrook. 



10. Uropsophus. 



Head between and behind the eyes covered with keeled scales ; 

 nose in front of the eyes, with three pairs of subsymmetrical shields; 

 superciliary shield large ; temples covered with rather large flat 

 scales ; labial shields moderate, flat, — the first, fourth, and the hinder 

 ones largest ; three series of flat loreal shields under the eyes ; shields 

 of two lower series of a moderate size ; the upper ones small, some- 

 times wanting. 



