535 



SIRTAL SNAKE. 



Coluber Si rtalis. C+fuscus, vittis tribus viridi 

 Brown Snake, with three blueish-grcen bands. 

 Coluber Sirtalis. Lin. Syst. Nat. p. 383. 

 Abdominal scuta 150, subcaudal scales 114. 



OBSERVED by Kalm in Canada: a slender spe- 

 cies, of a brown colour above, with three longi- 

 tudinal blue green stripes : body said by Linnaeus 

 to be slightly striated. 



TRISCAL SN"AKE. 



Coluber Triscalis. C. glaucus, Jmeis tribm fuscis ad nitc/tan 



conjunctis. 

 Glaucous Snake, with three brown lines conjoined at the back 



of the neck. 



Coluber Triscalis. Lin. Syst. Nat. p. 385. 

 Abdominal scuta 19-5, subcaudal scales 86. 



A SMALL but beautiful species, measuring about 

 a foot and half in length, and being of a sea-green 

 colour, marked above by four rufous stripes which 

 gradually unite into three, and afterwards into 

 two, and at length, on the tail, form one single 

 stripe : the head is covered with large scales, those 

 on the other parts being smooth or not carinated : 

 the tail measures about a fifth of the whole length: 

 native of South America. 



