CRUSTACt:A NORTH PACIFIC EXPLORING EXPEDITION 235 



0.16; breadth of rostrum at base, 0.06; length of cheHpeds, 0.53 inch. 



With G. longirostris Dana and G. elegans White it forms a group 

 which will perhaps be found to have a generic value, and be sepa- 

 rated from Galathea proper. From these two species ours differs in 

 its larger rostrum and in other characters. 



It was dredged from a black sand bottom at five fathoms depth 

 in Kagosima Bay, Japan. 



Genus ^lUXIDA Leach 



Differs from Galathea in the character of its front, which is armed 

 with three spines, the median longest. The species of Munida are 

 all very closely allied to each other. They are found in both tem- 

 perate zones and in both oceans. Only three species are known, 

 M. bamffia White, M. siibntgosa Dana, and the following. 



358. MUNIDA JAPONICA Stimpson 



Munida japoiiica Stimpson, Proc. Acad. Nat. Sci. Phila., x, p. 252 [90], 



1858. 



The carapax is oblong. The lateral margin is armed near the 

 middle with five spinules, and the spines above and behind the base 

 of the antenna are no larger than these lateral spinules. There is a 

 pencil of brilliant setae on the margin beneath the sinus of the trans- 

 verse suture, and a few such pencils on the sides of the abdomen, 

 h^-ontal spines needle-shaped, the lateral ones nearly half as long as 

 the middle one. There is a series of thirteen spinules extending 

 across the front part of the gastric region, of which two, one on 

 each side of the middle, are larger than the others. On each side of 

 the gastric region there are three spines on the surface, about half 

 way from the lateral margin to the median line. CheHpeds very 

 long, straight, subcylindrical, scabrous, with a few scattered spin- 

 ules ; fingers long, very slender, and straight, those of the left hand 

 gaping at the base. .Vntennne a little longer than the cheHpeds. 

 Color a rather dark red, mottled with light rod and w hilc. The feet 

 show a tendency to annulation. This description is drawn up from 

 a male specimen, the dimensions of which are: Length of carapax, 

 0.48; breadth, 0.28; length of median frontal spine, or rostrum, 0.18; 

 length of cheHpeds, 1.3 inches. 



Dredged fr(Mn a shell\' bottom in lwent\ faihnms in Kagosima 

 Bay, Japan. 



