268 CBANGONID^E. 



DEC APOD A. CRANGONIDM. 



MACROURA. 



TWO-SPINED SHRIMP. 



Crangon bispinosus. 



PontopMus bispinosiis, WESTWOOD. 



,, HAILSTONE, Mag. Nat. Hist. VIII. pp. 11, 13, f. 30. 



THE imperfect description and figure of this species, 

 given by Mr. Hailstone, prevent my coming to any very 

 decided opinion as to the distinctness of its specific charac- 

 ter. It has, certainly, some points of resemblance to C. 

 sculptus, but it is much smaller, if Mr. Hailstone's linear 

 admeasurement be that of an adult ; and there is no in- 

 dication of any sculpture on the abdomen. The follow- 

 ing is Mr Hailstone's description : 



" Pedipalps with the last joint rather longer than the 

 preceding one, and bluntish at its termination. First pair 

 of legs compressed, didactyle, with the thumb very short : 

 second pair rather shorter than the first, didactyle ; the last 

 joint half the length of the preceding one, which is com- 



