194 Bulletin Vanderbilt Marine Museum, Vol. VI 



surface of this fleshy portion of the flagellum. There is a brush- 

 like formation of setae on the distal outer lateral margin of the 

 thick portion of the flagellum. The lower flagellum, which is very 

 slender and cylindrical throughout its length, arises beneath the 

 upper flagellum and extends four or five articles beyond the latter, 

 or as far as does the scaphocerite. 



The antennae have a short basal article supporting a quite 

 long scaphocerite, which is five-sixths as long as the carapace 

 with the greatest median width two-thirds of the length, the outer 

 lateral margin straight, with an acute tooth subdistally, the con- 

 vex distal margin slightly longer than this tooth ; the second and 

 third articles are slender; the flagellum is thread-like, about as 

 long as the entire body. 



The external maxillipeds are long, pediform, with the distal 

 article elongate, cylindrical, distally serrate and with the lateral 

 surface bearing sharp spinules in transverse series. 



The mandible is simple, with no palp. 



The first pair of legs is short, weakly chelate, when extended 

 reaching to midway the scaphocerite ; the meral, carpal and pro- 

 podal joints are cylindrical, no wider than those of the third pair 

 of legs ; the fingers are two-thirds as long as the palm with a minor 

 concavity between the cutting edges, the tips meeting; the fingers 

 are setose distally. 



The second pair of legs is long, slender; the ischium and 

 merus are subequal, considered together, reaching to the base 

 of the propodus of the first pair of legs and here reflected upon 

 itself; the multiarticulate carpus measures: first joint, 0.4 mm. 

 long; second joint, 0.6 mm. long; third joint, 0.3 mm. long; fourth 

 joint, 0.15 mm. long; fifth joint, 0.2 mm. long; the propodus and 

 dactyl are equal to the last three articles of the carpus : the fingers 

 are slender, almost half of the length of the palm, with the cutting 

 edges serrulate, and a few setae distally. 



The third, fourth and fifth pairs of legs are successively 

 shorter ; the third pair, when extended, exceeds the length of the 

 rostrum by about the length of the dactyl of the third pair of 

 legs ; the fourth pair extends to about three-fourths of the length 

 of the propodus of the third pair and the fifth pair has about the 

 same ratio to the fourth pair of legs. All have the dactyl 0.3 as 

 long as the propodus, biunguiculate, and armed also with two 

 or three accessory spines on the inferior lateral margin. The 



