Boone, Crustacea, Cruise of "Alva," 1931 153 



separated by a distinct sulcus, all of which are terminated by the 

 oblique sulcus that runs inward from the lateral tooth. 



The first pair of legs is exceedingly slender, and when ex- 

 tended reach beyond the rostral tip by about the distal third of 

 the carpus and the entire propodus and dactyl. The basis and 

 ischium are successively longer, each produced on the inferior 

 lateral margin into a laminate marginally-rounded process, thickly 

 beset with short bristles. The merus is slender, cylindrical, greatly 

 elongated, extending to midway the scaphocerite ; the carpus is 

 even slenderer and about one-fourth longer than the merus ; the 

 propodus, including the finger, is two-fifths as long as the carpus, 

 similarly slender; the finger is about as long as the palm, sub- 

 cylindrical, tapered, with the tip pointed ; the upper finger is simi- 

 lar to the lower one but a little slenderer, with the distal half of 

 the cutting edge faintly crenulate ; both fingers are beset with 

 numerous isolated tufts of bristles on both their lateral margins ; 

 on the inner proximal lower margin of the palm there is a curious 

 double series of short bristles ; on the distal end of the carpus there 

 is also a brush of related bristles. The leg is bent at the mero- 

 carpal joint. 



The second pair of legs is greatly elongated, being one and 

 one-half times as long as the entire body in a specimen about 4.5 

 inches body length. The coxa is strong; the basis produced to a 

 supporting triangulate process at the inferior distal angle; the 

 ischium is elongated, compressed cylindrical, thickened distally; 

 the merus is twice as long as the ischium, moderately dilated dis- 

 tally ; the carpus is almost as long as the merus, similarly dilated 

 distally; the propodus has the palm one and two-fifth times as 

 long as the carpus, regularly cylindrical, somewhat compressed 

 laterally, with the lower finger two-thirds as long as the palm, 

 tapered with an upcurved, acute tip, extending beyond the down- 

 curved tip of the upper finger and armed with a large triangulate 

 subdistal tooth, and near this a smaller inner basal tooth, which 

 is rounded, laminate. The upper finger is slenderer, shorter, with 

 down-curved, acute tip ; basally there are two or three rudimen- 

 tary small teeth, and about one-third of the length from base is 

 a large triangulate tooth, not touching the lower finger, because 

 of the elliptical gape, which is nearly twice as wide in the widest 

 place as either finger. The ischial, meral, carpal, propodal and 

 dactylar joints are armed with numerous small, acute, procurved 



