188 BULLETIN OF THE 



at anterior boundary of hepatic area; a deep depression back of each hepatic 

 area and another across the anterior part of the cardiac region ; the upper surface 

 of the carapace is adorned with spinulose tubercles, and a median longitudinal 

 row of more prominent spines runs along the gastric and cardiac regions ; the 

 anterior spine of the cardiac region overhangs the transverse depression, the 

 posterior spine of the row springs from the hinder rim of the carapace. There 

 is a median hooked spine on the terguni of the second, third, fourth, and fifth 

 abdominal segments and many spiny tubercles irregularly disposed on these 

 segments ; the pleurae of the third to the sixth abdominal segments are narrow 

 but blunt, those of the second to the fifth are costate. The ocular peduncle is 

 movable and devoid of a spine. The antennse are about as long as the body ; 

 the basal joint has an inferior and a small external spine ; the second joint also 

 bears an external spine. The chelipeds are long and slender ; all the joints from 

 the ischium to the propodus are equipped with longitudinal rows of small 

 spines ; the chela is not broader than the basal part of the propodus, the fingers 

 are straight, their prehensile edges denticulate. The ambulatory appendages 

 are spinulose. 



Length of male, 49 mm.; length of carapace, 25 mm.; breadth of carapace, 



14 mm.; length of rostrum, 9 mm.; length of cheliped, 47.5 mm.; merus, 



15 mm.; carpus, 5.5 mm.; chela, 19 mm. 



Station 3394. 511 fathoms. 13 males, 16 females ovig. 

 " 3395, 730 ' " 3 males. 



Munidopsis aspera (Hend.). 



Elasmonotus asper Hend., Ann. Mag. Nat. Hist., 5th ser., XVI. 416, 1885 ; Rep. 

 Challenger Anomura, p. 163, Plate XIX. Fig. 4, 1888. 



1 female ovig. 

 1 male. 



1 female. 



2 males, 5 females (3 ovig.). 



1 male. 



2 males. 



This species is subject to considerable variation. In the specimens from 

 Stations 3402, 3403, and 3406 the tubercles of the carapace are more numerous 

 and less spiny than in those secured at the other stations. The ambulatory 

 appendages of all the " Albatross " examples are apparently more spiny than 

 in the types from the "Challenger." The latter came from the Straits of 

 Magellan, 245 fathoms. 



Munidopsis quadrata, sp. nov. 



Carapace quadrangular, the anterior and lateral margins forming a right an- 

 gle ; upper surface flat, spineless, but furnished with low squamiform tubercles. 



