44 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



reaches just to the end of the aciele; it is furnished Avith exopod and 

 cpipod; also the first three feet with epipods, as in -S', cA////. Dactyli 

 of last three feet longer than in S. dall/', being- more than one-fourth 

 the length of their respectiAe propodi. The sixth segment of the 

 abdomen is much shorter than in S. ddI//\ being less than half the 

 lengtR of the carapace (rostrum excluded). 



I>!iiiensions. — Female, length 33.5 mm., length of carapace and 

 rostrum 11.8 mm., of rostrum 5.1 mm. 



Type locality.— MovoYixn. Hokkaido; 1 female (Cat. No. 26157). 



SPIRONTOCARIS JORDANI, new species. 



Near S. Ted/hr(Mrix (Stimpson) of which I have at hand one specimen 

 from Fusan, Korea (P. L. Jouy, collector, 1885), and one specimen 

 from Hakodate Bay, Japan, Hi fathoms (station 3(>56, U. S. Fish 

 Commission steamer AJhatroH^). 



In S. jordani the rostrum extends barel}' to the end of the antenna! 

 peduncle, nearly straight and horizontal, slightly convex above, nar- 

 row% of about even width throughout, armed with 8 spines aliove, of 



which 2 are behind the orl)it, and 1 beneath, 

 subterminal; the posterior spine is situated 

 at the anterior fifth of the carapace; at its 

 posterior base there is a rudiment of another 

 spine. As in S. rectirodri>< there is no su- 

 praorbital, an antennal, a very small ptery- 

 FiG. 17.-SPIKONTOCARI8 .K.KDANi, ^Qgtomian spiuc. The antennular scale 



(CARAPACE OF FEMALE, X 2f . = 111 



reaches to the end of the second anten- 

 nular segment; the antennular peduncle to the middle of the antennal 

 scale; this scale is very broad at its extremity, the blade exceeds the 

 spine. The outer maxillipeds overreach the scale by half the length 

 of the last segment. They are destitute of an exopod, but are provided 

 with an epipod, as are also the first three pairs of feet. The third 

 pair of feet overreach a little the first pair, their dactyli are one-fourth 

 as long as their propodi. The sixth segment of the abdomen is three- 

 fifths as long as the carapace (rostrum excluded). Telson as long as 

 the inner uropod, much sliorter than the outer one. 



Dliii'-nsioni^. — Female, length 46.5 mm., length of carapace and 

 rostrum 13.2 nmi., of rostrum 5 mm. 



Type Ayr(//%. ^Hakodate, Hokkaido; 1 female (Cat. No. 26158). 



SPIRONTOCARIS GREBNITZKII, new species. 



Neai S. stylus' (Stimpson), but stouter. Rostrum nearly as long as 

 the rest of the carapace, reaching to end of antennal scale, straight, 

 acute. Dorsal carina arising at the middle of the carapace, armed 

 with 8 equal and equidistant spines, 2 of which are behind the orbit, 

 the posterior one at the anterior fifth of the carapace, the anterior 

 spine just before the middle of the rostrum. Lower margin armed 



