158 Bulletin Vanderbilt Marine Museum, Vol. VI 



of long, articulated spines, and outside of these a pair of short 

 spines, one each on either side ; the inferior distal margin of the 

 telson is fringed with bristly setae ; the median dorsal surface of 

 the telson is abundantly covered with rounded granules, some of 

 which are more sparsely distributed on the lateral regions. The 

 uropoda are slightly longer than the telson, with the inner blade 

 slightly the smaller and having its dorsal surface covered with 

 granules similar to those of the telson ; both blades are widely oval. 

 The eye is pyriform with a small ocellus. 



The antennulae have the peduncle two-thirds as long as the 

 scaphocerite ; the basal article is concave beneath the eye and has 

 the outer lateral margin thickened, terminating in a distal spine ; 

 the second and third articles are successively shorter ; the flagel- 

 lum is three-branched, the shortest branch is one-half as long as 

 the second branch, which is three-fourths as long as the third 

 branch, and the latter is three-fourths as long as the antennal 

 flagellum, which is three times as long as the entire body. 



The antennae have a double spine on the outer lateral-distal 

 margin of the first article which supports a typical scaphocerite, 

 which has a thickened outer lateral margin that terminates in a 

 sharp spine and has the inner distal portion rather widely rounded. 



The external maxillipeds are each two-thirds the length of the 

 scaphocerite, with the dactyl about two-thirds as long as the pre- 

 ceding article, pointed and beset with setae. 



The first pair of legs are exceedingly slender and extend be- 

 yond the scaphocerite by slightly more than the length of the 

 propodus and dactyl. 



The second pair of legs (female) are about three times tha 

 length of the carapace, including the rostrum, and are quite slen- 

 der, with the ischial joint about two-thirds as long as the merus ; 

 these two articles considered together are about equal in length 

 to the carpal joint, which is as long as the slender palm. The 

 fingers are almost one-third as long as the palm, very slender, 

 with an upper and a lower triangulate tooth on the proximal por- 

 tion, and with tapered, hook-like tips that interfit. The meral, 

 carpal, propodal and dactylar joints are beset with coarse, broad- 

 based, prickly tubercles or spines, like those figured by M. Roux. 



The third pair of legs is greatly reduced, slender, chelate, 

 about ; longer than the first pair. 



