360 SIAMESE BOA. 



than large, and is entirely covered with small ca- 

 rinatcd scales ; the body with somewhat larger 

 ones : the tail tapers suddenly, and is an inch and 

 half in length. Specimens of different sizes were 

 found to vary very little in colour, still less in 

 spots, and very little in the number of scuta. 

 The fangs or poisoning organs of this snake show 

 it to be noxious; but in what degree could^not be 

 ascertained by Dr. Russel, who could not meet 

 with a living subject to make the necessary expe- 

 riments with. It is reported, however, to be one 

 of the most fatal of serpents. 



SIAMESE BOA. 



Boa Hipnale. E.jlava, sirpra maailis magnis irregufaribus sub- 



tranrcersis albls fwco-margiuatis j'asciata. 

 Yellow Boa, fasciatcd above by large irregular subtransverse 



white spots with brown edges. 



Serpens, s. Vipera Siamensis perelegans. Seb. 1. t. 34. 

 Abdominal scuta 1?9> subcaudal 120. 



A SMALL species, but very long in proportion to 

 its breadth; the circumference of the body being 

 scarce more than an inch and half, and the length 

 from two to three feet: the head shaped like that 

 of the Boa canina: the colour of the whole animal 

 pale yellow above, with pretty numerous trans- 

 verse broken bars of white, with black or deep 

 brown edges : the abdomen yellow. This species 

 is said to be a native of the East Indies, and parti- 

 cularly of the kingdom of Siam. 



