114 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



spicuous than the others. The fifth, sixth, and seventh have each a 

 median tubercle, and on either side of it a group of two large tubercles 

 surrounded by low areolations. 



The abdomen consists of a single segment, with a suture line on 

 either side at the base, indicating another partly coalesced segment. 

 The abdomen tapers to a narrow extremity, which posteriorly is 

 notched. 



The first pair of legs are shorter than the following six pairs, and 

 are prehensile. All the others are similar, and have the basis pro- 

 duced on the upper side in a ridge which is bilobate. 



Eight specimens of this species come from the following localities: 

 Station 5020, station 5021, station 5023, and station 5024, off the east- 

 ern coast of Saghalin Island, vicinity of Cape Patience, in Okhotsk 

 Sea, at lat. 48° 32' 45'' N.; long. 145° 07' 30" E.; lat. 48° 32' 30" N.; 

 long. 145° 08' 45" E.; Flat Hill, X, 53° W.; Cape Patience, S. 77° 

 W. (lat. 48° 43' 30" N.; long. 145° 03' E.) ; Flat Hill, N. 48° W.; 

 Cape Patience, S. 74° W. (lat. 48° 43' 10" N. ; long. 144° 59' 30" E.), 

 at a depth of 67-75 fathoms, in sand, pebbles, and green mud. 



This species is perhaps closer to Synidotca consoUdata (Stimpson), 

 from Pacific Grove, than to any other species. 



Type-specimen.— C^t. No. 39519, U.S.N.M. 



Genus CLEANTIS Dana. 



CLEANTIS ISOPUS Miers. 



Cleantis isopus Miers, Journ. Linn. Soc. London, vol. 16, 1883, pp. 80-81, pi. 3, 

 figs. 9-11.— Grube (MS. in Brit. Mus.). 



Locality. — Two specimens from Hakodate Bay, Japan ; four speci- 

 mens from Mororan, Japan. Miers's specimens were from Ojica, 

 Goto Island, lat. 33° 12' 30" N.; long. 129° 5' E. Grube 's speci- 

 mens were from Chefoo. 



Depth. — Taken on the shore. 



The palp of the maxilliped is composed of five articles as in 

 Cleaiitis planicauda Benedict. 



ASELLOIDEA or ASELLOTA. 

 Family JANIRID^E. 



Genus JANIRA Leach. 



JANIRA JAPONICA, new species. 



Body oblong-ovate. Color, in alcohol, yellow. Surface smooth and 

 free from spines. 



Head wider than long, with the front between the antero-lateral 

 angles, triangularly produced. Antero-lateral angles narrow and but 

 little produced; their extremities are rounded. Eyes large, oval, 

 composite, and placed halfway between the anterior and the pos- 

 terior margins, and a distance from the lateral margin equal to 

 the width of one eye. The first pair of antennae have a peduncle of 



