Crangon and Galathea. 



THEEE-SPJNED SHRIMP. 



fiO 



Plate V. 



CHERAPHILUS TRISPINOSL'S. — FOUR TIMES SIZE OF LIFE. 



r. rostrum. 



Cheraphilus trispinosus (Hailstone Sp.) 



PontopUlus trispinosus. Hails., Mag. Nat. Hist., viii. p. 261, fig. 25. 

 Crangon trispinosus. Bell, Brit. Crust., 265 ; A. White, Brit. Pop. Crust., 

 110 ; Kin., Proceed. Nat. Hist. Soc, Dub., vol. ii. 



Rostrum very short, moderately broad,rounded at the apex,hollowed above; ocular 

 notch broad, shalknc, sparingly ciliated at its base; carapace rounded above, armed 

 with one median and two lateral gastric teeth, which are continuous with an obso- 

 lete raised ridge ; bratichial regions smooth ; sixth abdominal somite obsoletely ca- 

 rinated ; telson holloived ; remaining somites smooth ; second pair of chelipeds 

 slender, much shorter than first or third. 



Rostrum sliort, broadly rounded at apex, barely attaining apex of eyes, hol- 

 lowed above; ocular notch shallow, ciliated sparingly at base. 



VOL. XXIV. L 



