184 BULLETIN OF THE 



Munidopsis sericea, sp. nov. 



The whole surface of the body and limbs is covered with a silky pubes- 

 cence. The rostrum is long, curved gently upward, convex above, but not 

 carinated, armed with a prominent spine on each side near the middle, and 

 with three more minute spinules near the base. Gastric region swollen, armed 

 with two conical spines and ten or twelve small spinuloid tubercles. The 

 cardiac region has a prominent transverse ridge near the centre, in front of 

 which is a deep depression separating it from the gastric region ; the ridge is 

 armed with a pair of short spinules. There is a small spine on the anterior 

 border between the eye and the antenna, a large one at the antero-external 

 angle, three on the border of each hepatic region (the middle of one of these is 

 the largest), and one small one on the border of each branchial region just 

 behind the cervical suture ; there are besides about ten sharp tubercles on 

 each branchial area, and five or six pairs of spinules on the posterior margin of 

 the carapace. Pterygostomian regions granulated. There is a pair of spines on 

 the second, third, and fourth abdominal segments ; besides these there are sev- 

 eral small spinules on the terga and pleurae of these segments ; the pleurae 

 are rather narrow, with rounded lateral angles. The chelipeds are wanting in 

 the unique specimen. The ambulatory appendages are spinulose, the spinules 

 of the dactyli restricted to the hind margin. The eye is provided with a very 

 minute spine. The antennae are rather longer than the body, the basal joint 

 has a short external spine, a longer one at the lower internal angle, and a 

 small one at a higher level on the inner side. The latter spine shows, when 

 the animal is viewed from above, between the eyestalk and the antenna. The 

 subsequent segments of the antenna are armed as usual in this genus. 



Length, 39 mm. ; length of carapace, 12 mm. ; length of rostrum, 8 mm. ; 

 breadth of carapace, 12 mm. 



Station 3394. 511 fathoms. 1 male. 



Munidopsis marganta, sp. nov. 



In this species the rostrum has a gentle upward curve near the tip ; it is 

 carinate above, and minutely spinulous on the margins. The surface of the 

 carapace is rough with squamous tubercles and forward-pointed spines. The 

 gastric and cardiac regions are prominent, and separated from one another by 

 a deep depression ; a pair of spines on the gastric, and one spine on the cardiac 

 region, attain a special prominence. A long sharp spine outside the eye forms 

 the outer wall of a well marked orbit. There are eight spines on each lateral 

 margin, six on the posterior (including those at the postero-lateral angles). 

 The branchial areas are iridescent. Second abdominal segment : the anterior 

 transverse ridge, which is broken down in the centre, bears on each side a 

 prominent hooked spine, which is enlarged at the base and denticulated on the 

 outer margin ; the posterior ridge is furnished with three hooked spines ; the 



