56 MR. E. J. MIERS ON CRUSTACEA FROM [Jan. 14, 



variety of the planirostris ; or the differences may be those peculiar 

 to the male sex. 



HiPPOLYTE LEPTOGNATHA, Var. 



? Hippolyte leptognatha, Stimpson, Proe. Ac. Nat. Sci. Phil, 

 p. 34 (1860). 



Rather slender. Carapace dorsally carinated, the carina reaching 

 nearly to the posterior margin ; anterior margin with two small 

 spines below the eye, and another at the antero-inferior angle. Ros- 

 trum elongated, longer than the carapace, its apex reaching beyond 

 the end of the shorter thickened flagellum of the antennules ; its 

 upper margin straight, horizontal, and 6-dentate, the two or three 

 last teeth situate on the dorsal crest, inferior margin with about six 

 small and crowded teeth. The postabdomen is strongly geniculated. 

 The outer maxillipeds slender and elongated, reaching nearly to the 

 apex of the rostrum. Anterior legs ratlier slender ; the palm longer 

 than the fingers, and rather longer than the wrist. Wrist of second 

 pair of legs 7-jointed, the second and sixth joints shortest, and the 

 third joint the longest. Only one of the following legs exists in the 

 specimen before me ; in this the merus joint is armed with a series 

 of spinules on its inferior margin, the penultimate joint is long, and 

 tlie last joint short. 



The single specimen, a female with ova, was collected in the Gulf 

 of Yedo, and is in a mutilated condition. 



It agrees in so many particulars with Stimpson's description of 

 H. leptognatha, from Hakodadi, that I have not ventured to consider 

 it distinct ; as will be seen from the description, however, it differs in 

 the more numerous teeth of the rostrum, of which fewer are placed oa 

 the dorsal surface of the carapace. 



PaNDALUS GRACILIS. 



Pandalus gracilis, Stimpson, Proc. Ac. Nat. Sci, Phil. p. 37 

 (1860). 



A single specimen was obtained in the Korean Straits, in lat. 34° 

 8' N., long. 126° 24' E. ; temp, of water 71°, at a depth of 17 

 fathoms. It is in a very mutilated condition, the legs being im- 

 perfect and rostrum broken at the tip ; but it agrees well with Stimp- 

 son's description and a specimen presented by the Smithsonian 

 Institution from Hakodadi. 



p e n ,e i d e a. 



Penjeid^. 



Pen^us affinis, M.-Edw. 



PencBus affinis, M.-Edw. Hist. Nat. Crust, ii. p. 416 (1837) ; De 

 Haan, Faun. Japon., Crust, p. iy2, pi. xlvi. fig. 3, barbatus on plate 

 (1849); Miers, Proc. Zool. Soc. p. 304 (18/8). 



PencBus velutinus, Dana, U.S. Expl. Exp. xiii., Crust, i. p. 604, 

 ph xl. fig. 4 (18o2). 



One male individual, was collected in lat. 32° 49' N., long. 128° 

 54' E. *= 



