36 



PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



Fig. 4.— Abdomen of 



CiROLANA JAPON- 



ENSIS. X 10. 



ment is triangulate, with apex obtuse, the sides converging- more rap- 

 idly to the posterior third portion of the segment. This posterior part 

 of the last segment is crenulate, and armed with about ten spines 

 and numerous hairs. The inner branch of the uropoda is about twice 

 as broad as the outer. Both branches are equal in 

 length, crenulate on both margins, and armed with 

 spines and hairs. 



The legs of the first pair have the ischium and 

 merus distall}^ produced, the process of the merus 

 extending half the length of the propodus. The 

 carpus is very small, almost inconspicuous. There 

 are a few spines on the inferior margin of the merus, 

 carpus, and propodus. In the second and third pairs 

 of legs the carpus is larger, and the process of the merus extends to 

 the end of this joint. The fourth and fifth pairs of legs are similar, 

 with the exception that the basis in the fifth pair is more dilated and 

 less slender than in the fourth pair. The sixth and seventh pairs 

 have the basis much dilated, forming a 

 high carina. All the legs are furnished 

 with long, plumose hairs. Spines also 

 are present along the margins of the 

 legs. 



Color, uniformly light yellow; eyes, 

 light brown. 



Only one specimen was taken by the 

 U. S. Fish Commission steamer Alba- 

 tross, at Yokkaichi Light, Japan. 

 Ty2)e.— Cat. No. 29085, U.S.N.M. 

 This species is closely related to C. 

 hirtijMS Milne Edwards,'* but the fol- 

 lowing characters may serve to distin- 

 guish it from that species: Cl3'peus 

 somewhat wider than labrum, being- 

 produced at the lateral angles; anten- 

 na? longer than in O. hirtrpes, reaching 

 the posterior margin of the third tho- 

 racic segment; ej^es smaller than in C. 

 hirfipe.s and round; epimera of thoracic 

 segments not ornamented with arcuate 

 carinse (''furca"), only faint traces of these being evident; the legs of 

 the first three pairs are not provided with a spine at the apex of the 

 ischium and merus, as is true of C, hirtipes; the other four pairs of 

 legs are provided with spines along the margins and a few spines on 



Fig. 5.— Legs of Cirolana japonensis. 



rt, OF FIRST PAIK; 6, OF SECOND PAIR; C, OF 

 FIFTH pair; d, OF SEVENTH PAIR. X 10. 



«H. J. Hansen. Cirolanidse, etc., Vidensk. Selsk. Skr., 6te R. 

 og Mathematisk Afd. 5te Bd. 3, p. 326. 



Naturvidenskabelig 



