Decapod Crustacea of Ucnnuda, Part II. 95 



to the diameter of the eye. Rostrum is acute, decidedly longer 

 (nearly twice) and more slender than the orhital spines, about 

 reaching the middle of the first antennular segment ; ocular spines 

 with very acute acuminate tips, their bases enlarged, conical. The 

 antennular spine is stout and reaches to the proximal third of the 

 second segment. The lateral basal antennal spine or basicerite is 

 nearly equal to the antennular spine; the upper smaller one is 

 small, acute, about even with the rostrum ; the spine of the antennal 

 scale reaches about to, or a little beyond, the antennal peduncle, 

 which is a little longer than the antennular peduncle; the scale is 

 rather wide and somewhat shorter than the acute spine. 



Large chela (pi. 33, figs. 6, 6a) is elongated, not much swollen, 

 broadest near the middle of the palm, slightly oblique, with dis- 

 tinct dorsal and lateral distal articular denticles. The dorsal one 

 is most distinct; two shorter and blunter ones are on the inner 

 edge; two and a larger lobe are on the outer edge. Palm with 

 some slight, oblique rugae on the side proximally. Dactyl com- 

 pressed, the tip strongly curved and acute, amber-color. Middle 

 of cutting edge a little convex; plunger cylindric, strongly bent 

 backward ; fixed finger a little shorter, a little divergent, incurved 

 at the acute tip ; socket for plunger with raised margins. 



The legs of the second pair (figs, ic, ic') are very slender; 

 merus is 5 times longer than wide, longer than first four articles 

 of the carpus; first carpal article is equal to sum of third, fourth 

 and fifth ; chela is equal to the fourth and fifth combined ; fingers 

 are longer than the palm, which is about twice as long as wide, with 

 the borders only slightly convex ; fingers are slender, acute, the 

 fixed one slightly denticulated near tip ; it bears five or six sepa- 

 rate tufts of long hairs ; one long tuft is near the middle of the 

 cutting edge. The dactyl bears four or five similar tufts of shorter 

 hairs, the largest tuft close to the tip. 



The third and fourth legs (pi. 40, figs, id, id') have the merus 

 enlarged in the middle; length 3.5 times the width; dactyl 

 biunguictilate, with a distinct spur higher up; propodus with 8 

 spines, including the distal one. 



The third maxilliped (figs, la, ib) has a stout third article and 

 a smaller, tapered, distal one, about as long; the latter has five 

 slender spines at the tip and about 12 transverse rows of hairs. 

 Telson oblong, slightly convex in the middle of the margins, some- 

 what tapered distally, obtuse, not evidently bicarinate ; four dorsal 



