My sis cham&leon. J. V. Thomps. 



Specific Character. Middle plate of the tail bifurcate ; rostrum obtuse, not 

 more than one-third the length of the ocular peduncle. 



Mi/sis apinulosus? 



Leachii? 

 Chamceleon, 



LEACH, Trans. Lin. Soc. XL p. 350. DESMAR. Con- 

 sider, sur les Crust. EDW. Hist, des Crust. III. p. 

 457. 



J. V. THOMPSON, Zool. Researches, p. 27. 



Ib. p. 28, t. ii. fig. 1 10. EDW. 1. c. p. 457. 



THE general form of this species is much elongated. The 

 carapace slender, terminating in a very short rostrum, in 

 some scarcely projecting, in others forming an obtuse tri- 

 angle, and never extending more than one-third the length 

 of the ocular peduncle. The internal antennae have the 

 peduncle somewhat club-shaped, the first joint being elon- 

 gated, cylindrical, and small, the last two, and particularly 

 the terminal one, much broader, and both very short ; the 

 whole peduncle does not extend much more than one-third 

 the length of the scale of the external antennae : the scale 



