178 Bulletin Vanderbilt Marine Muiseum, Vol. VI 



the telson, of moderate size, the blade unequal, subovate, the outer 

 one being the wider and having a sinuate transverse suture dis- 

 tally and a conspicuous subdistal tooth on the outer lateral margin. 



The eyes are characteristically large, stalk proximally con- 

 stricted, the distal half bulbous ; the cornea large, terminal, nearly 

 hemispherical ; when directed forward, the eyes extend two-thirds 

 of the rostral length. 



The antennulae have the first peduncular article two-thirds as 

 long as the rostrum, laminate, dorsally concave, the inner lateral 

 margin slightly convex, outer lateral margin narrowed proxi- 

 mally, the outer side deeply, obliquely incised, forming a strong, 

 triangular process, the acuminate apex of which extends beyond 

 the margin ; the outer distal angle is also produced into a triangu- 

 late tooth of different proportions that extends to about the distal 

 margin of the third peduncular article ; the second and third ar- 

 ticles are small, cylindrical, slightly unequal in length ; the flagel- 

 lum has the outer, longer branch extending beyond the scapho- 

 cerite for about half of its length ; the inner branch is not quite so 

 long as the scaphocerite. 



The antennae have the basicerite strong, wide, extending for- 

 ward to midway the proximal, lateral spine of the first peduncular 

 article of the antennulae; the basicerite has an acute out- and 

 forward-directed spine at the outer distal angle ; the scaphocerite 

 extends to about two-fifths of the length of the great cheliped 

 and is moderately, regularly convex on the inner lateral margin ; 

 the outer lateral margin is nearly straight proximally, moderately 

 concave distally, terminating in an acute tooth subdistal to the 

 somewhat obliquely truncated, yet slightly rounded, distal margin ; 

 the inner lateral and distal margins are fringed with web-like 

 multiplumose setae. 



The first pair of legs is very weak, chelate, when extended, 

 the tip of the chelae reaching two-fifths of the length of the palm 

 of the great cheliped; these first legs are slenderer throughout 

 their length and only a little longer than the first pair of ambula- 

 tories, with the carpus, propodus and dactyl furnished with nu- 

 merous outstanding, hook-like setae. 



The second pair of chelipeds unfortunately has the right leg 

 missing. The left leg, which is apparently the larger one, is 15 

 mm. long, or approximately equal to the total length of the body, 

 rostrum included, has the merus very slender, trigonal, with an 



