4^ 



telson is Jilniost circular; its hind margin is fringed with setcC, 

 two groups longer than the rest being inserted within the margin, 

 and another group above the middle of the. dorsal surface. 



The eye-plates are somewhat triangular with the inner margins 

 adjacent, and the pigmented portion at a little distance Irom 

 the apex. 



The first antenuce hare the third joint considerably longer than 

 the first and second together, and the flagella somewhat longer 

 than the second and third joints together, these two joints and the 

 slender inner fiagellum having long plumose setae. A setose slit 

 form's the opening to the auditory apparatus of the first joint. 



The second antennae have a peduncle about as long as that of 

 the first pair, the fifth jomt slightly shorter than the fourth, the 

 iiagellum slender, longer than the peduncle, but not very elon- 

 gate. 



The cutting edge of the mandible is divided into ten or eleven 

 small teeth, increasing in size from the ends of the row towards 

 the middle of it- 



The third maxillipeds have the third and fourth joints 

 expanded, the third long'er than broad, with a comb of minute 

 teeth on the inner surface nearer to the outer than the inner 

 • margin; the fourth joint is broader than long, and widens 

 ' distally ; the fifth and sixth joints are subequal. longer than wide, 

 each with a close-set group of spines on the inner surface ; the 

 seventh joint is narrower, rather shorter and bluntended- 



In the larger first cheliped the fourth joint has a tooth proxi- 

 nially, and is then cup-shaped on the outer surface, but on the 

 inner is much widened ; it is a little longer than the preceding 

 joint, which is widest distally; the fifth joint is nearly as wide as 

 long, about as wide as the sixth, but only half as long ; in the 

 sixth the thumb is two-sevenths of the length, much narrower 

 than the movable finger, with no gap between them. In the 

 smaller cheliped the fourth joint is rather shorter than the pre- 

 ceding but wider, with no tooth ; the fifth joint is shorter than the 

 sixth, but longer than the palmar portion of it, tlie latter being 

 not greatly longer than the narrow setose fingers- 



The second chelipeds are very similar to those of CalUanassa 

 kraussi, but the following pair differ considerably from that 

 species, the oval sixth joint having no backward produced lobe, 

 and the finger, though laminar, being narrowly triangular. The 

 fourth pair of feet are separated at their bases by a sternal plaque 

 trilobed in front and bifid behind. These and the following pair 

 are constructed much as in C. kraussi and C. subterranea 

 (Montagu). 



The pleopods on the third, fourth, and fifth pleon segments- 

 have the usual character, the fringing setai being minutely 

 plumose, and appearing as if consisting of numerous iointlets. 

 The retinaculum is distally fringed with close-set, tiny spines- 



