Decapod Crustacea of Bermuda, Part II. 125 



Bate and others have legitimately restored the name 

 to the group that includes the original type of Leach (H. varians). 

 For the large group of arctic and northern species called Hippolyte 

 by Stimpson, S. I. Smith (these Trans., v, p. 62) and many others, 

 the name Spirontocaris was proposed by Bate in 1887. 



Many species of Spirontocaris occur on the northern coasts of 

 New England. Most of them are handsomely colored with 

 various patterns of bright red, etc. 



Hippolyte acuminata Dana. 



Hippolyte acuminata Dana, U. S. Expl. Exped., Crust., p. 562, 1852; 

 Atlas, pi. xxxvi, figs. I le, 1855. Stebbing, op. cit., p. 289, 1914. 



Virbius acuniinatus Stimpson, Proc. Acad. Nat. Sci., Phila., p. 36 (105), 

 1860. Kingsley, List N. Am. Caridea, Bull. Essex Inst, Salem, x, p. 

 63, 1878. 



Hippolyte bidentatus Bate, Voy. Chall., Zool., vol. xxiv, p. 591, pi. cv, 

 figs, i, 2, 1887. 



TEXT FIGURE 8, a-f. PLATE XLIII, FIGURES i, a-l, after Dana. PLATE 

 XLVII, FIGURES 5 sd (after Bate). 



This species, as described by Dana, has a slender, acute rostrum 

 with a small spine on both the upper and under margins, at about 

 the distal third. (See our figures copied from Dana.) The first 

 legs have chelae that are short and only a little larger than the 

 carpus. Chelae of the second pair are smaller, cylindric, scarcely 

 larger than the third joint of the carpus and only slightly longer. 



It lacks the hepatic spine. The fifth abdominal segment has two 

 small dorsal spines. It can be easily distinguished by the slender 

 rostrum, wider distally, and usually with only one spine, above and 

 below ; rarely two below, and by the odd gibbous form of the 

 larger chela. 



It was not obtained at Bermuda by our parties. Miss M. J. 

 Rathbun has sent me the following note : "One specimen, a female 

 bearing eggs, was taken in floating weed on the north shore of 

 the Bermudas by the late Dr. Geo. Hawes, Jan. 12. (U. S. Nat. 

 Mus.) It differs from the type in lacking the spine on the superior 

 margin of the rostrum. Sometimes the rostrum in this species 

 has two spines above." (M. J. R.) 



It is found among floating Gulf Weed (Sargassum) in the 

 central Atlantic Ocean and also along the course of the Gulf 



