MUNIDOPSIS HAMATA. 95 



Munidopsis hamata Fax. 

 Plate XXL, Fig. 2, 2'\ 2\ 



Bull. Mus. Comp. Zool., XXIV. 1S7, 1S93. 



Body and limbs clothed Avith short, scattered sette. Rostrum long, curved 

 slightly upward, basal half furrowed longitudiually, with a row of short 

 spines on each side of tlie farrow ; infero-lateral edges of rostrum also fur- 

 nished with small spines. Carapace quadrangular, anterior border forming a 

 right angle with lateral border, both borders spinulose ; lateral border with 

 an indentation at anterior boundary of anterior branchial lobe ; a deep de- 

 pression back of each anterior branchial lobe, 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 hind rim of the carapace. Tliere is a median hooked spine 

 on the tergum of the second, third, fourth, and fifth abdominal segments, and 

 many spiny tubercles irregularly disposed on these segments ; the pleura3 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 antennte are about as long as tlie body ; the basal joint has 

 an inferior spine 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 propodite are equipped with longitudinal rows of small 

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

 fingers are straight, their prehensile edges denticulate. The ambulatory 

 appendages are spinulo.se. There are no epipodites on the five pairs of 

 legs. 



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

 pace, 14 mm. ; length of rostrum, 9 mm. ; length of cheliped, 47.5 nan. 

 (merus, 15 mm., carpus, 5.5 mm., chela, 19 mm.). 



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

 " 3395. 730 " 3 males. 



