62 OPHIDIAN EEPTILES. 



a native of tlie warmer parts of Africa. A living- specimen at the 

 Zoological Gardens is estimated to weigh a hundredweight. 



Of the genera Liasis and Nardoa there are five sjDecies, very 

 imperfectly known. 



Fig. 14. — Guinea Rock Snake {H. Sehce). 



lY. Epicrates, an American and West Indian species, having 

 the crown scaly ; the forehead with symmetrical shields. 



The Aboma {E. cenckria) is one of the largest of the group, 

 sometimes attaining dimensions quite gigantic. It is yellowish 

 in colour, with a row of large brown rings running the whole 



