254f CLASS REPTILIA. 



3. Others again have scaly plates on the muzzle, 

 and fossets to the plates on the sides of the jaws. 



T7ie Aboma. {Boa Cenchris, Lin.) Ahoma and 

 Porte-anneau of T)3i\xdim. Seb. I. Ivi. 4, II. xxxviii. 

 2, and xcviii. Boa Cenclwya^ Pr. Max. 6th liv. 



Fawn colour, with a series of large brown rings along 

 the back, and variable spots on the sides. 



These three species, which attain nearly to an 

 equal length, remain in the marshy situations of the 

 warm parts of America. Adhering by the tail to 

 some aquatic tree, they suffer their body to fluctuate, 

 for the purpose of seizing the quadrupeds that come 

 to drink. 



4. There are some which have plates on the 

 muzzle, and the sides of the jaw are hollowed with 

 a foss, in the form of a cleft, under the eye and 

 farther back.* 



There are some, in fine, which want fossets, and 

 have the muzzle furnished with plates a little promi- 

 nent, and cut obliquely from back to front, and 

 truncated at the end so as to terminate in a corner. 



* B. Hortulana, L., Seb. II. Ixxxiv. 1, and U elegant, Daud. V. Ixiii. 1, 

 which do not differ. The bojobi, B Canina, L. Seb. II. Ixxxi. and xcvi. 2, or 

 Xiphosoma A7'arm7iboja,Sp\x, xvi. The B. Hipnale, Seb. II, xxxiv. 1, 2, and 

 Lacep. II. xvi. 2, appears to be only a young bojobi. The B. Merremii, 

 Schn. Meri. Beytr. II. ii., or Xiphosoma Dorsuale, Spix, XV, of which 

 Daudin has made his genus Coballe, on the character, probably acci- 

 dental and individual, of the first two plates being double under the neck. 



