RAT EGA. 351 



tail slender. It is a native of South America. 

 Scba figures what appears to he a variety of this 

 species, of a sea-green colour above, with deep 

 chesnut variegations, and pale yellow heneath, 

 with reddish spots. 



It is remarkable that Linnaeus, in the Museum 

 Adolphi Friderici, appears to describe the Boa 

 hortulana as a species of Coluber, having the 

 habit or general aspect of a Boa. 



RAT BOA. 



Boa Murina. B. grisea maculis rotundatis nigris, lateralibus al- 



bido-oceUatis. 

 Grey Boa, with round black spots, those on the sides ocellated 



with white. 



Boa murina. Lin. Syst. Nat. p. 274-. 

 Serpens testudinea Americana, murium insidiator. Seb. 1. 



t. 29. 

 Abdominal scuta 254, subcaudal 65. 



THIS is a middle-sized species, measuring about 

 two feet and a half or three feet in length, and 

 being of a moderately thick form : the colour of 

 the whole upper part is grey or blueish-brown, 

 with several moderately large round black spots 

 dispersed in a somewhat irregular manner along 

 the back and sides ; those on the sides being 

 marked with a white patch, so as to appear ocel- 

 lated : some smaller spots of different forms are 

 also interspersed : the abdomen is of a yellowish 

 white or pale colour, with a few scattered dusky 

 spots: the head is marked on each side by two 



