666 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXVII. 



Abdomen broad, gradually becoming- somewhat narrower toward 

 the posterior extremit\'. Posterior margin produced in three lobes, 

 two lateral lobes, one on either side of a broadly rounded 

 median lobe; the two lateral lobes are acute. The 

 uropoda ai-e short, not longer than half 

 the length of the terminal segment of 

 the body; the basal segment is broad, 

 quadrate in shape, and shorter than 

 either branch; the inner branch is some- 

 what longer than the outer one. The 

 middle piece of the operculum in the 

 Fig. 10. — uropod ^lalc is very similar to the iigure p-iven 



OF JaNIROPSIS 1 r-i r i • i 



KiNCAiDi. x77. by bars'* or the type species of the 

 genus, Janiropsis hreviremus. It is 

 produced and greath^ dilated at the distal extremity. 

 Nine specimens w^ere obtained by the Harriman 

 Alaska expedition at Yakutat, Alaska. They were 

 collected by T. Kincaid, after whom the species is 

 named. Five females and four males were collected. 

 The first pair of legs in the male are not greatly longer 



than the others; the}" are 

 longer in the type spe- 

 cies of Jamropi<is. 



The very short supe- 

 rior antennte with few 

 articulations, the greatly 

 dilated joints of the max- 

 illipeds, the form and 

 shape of the middle piece 

 of the male operculum 

 with its dilated tip and 

 the shortness of the uro- 

 poda, which are only 

 half the length of the terminal segment 

 of the body, are characters which un- 

 doubtedly place this species with Janiropsis Sars. 

 Type.--G^i. No. 28,717, U.S.N. M. 



(a) (6) 



Fig. 12.— Janikopsis kincaidi; a, leg 



OF FIRST pair; 6, LEG OF SECOND 

 PAIR. X 27. 



Fig. U.— Janikopsis 



KINCAIDI; a, MID- 

 DLE piece OF male 



operculum; ft, 



LATERAL PLATE OF 

 MALE operculum; 



c, second pleopod 



OF MALE. X 41. 



JANIROPSIS CALIFORNICA, new species. 



Body narrow, elongate. Surface smooth; color uniformly whitish. 



Head with a prominent rounded median lobe on the anterior margin; 

 lateral angulations rounded; lateral margins straight and converging 

 toward the base. Eyes black, distinct, but small, and simple in struc- 

 ture. First pair of antennae are composed of six joints, and extend 



"Crustacea of Nonvay, II, 1899, p. 102. 



