MUNIDOPSIS LATIROSTRIS. 99 



The rostrum is triangular, blunt at the apex, bent strongly downward, and 

 slightly carinate above. The antero-lateral angle is rounded, and a rounded 

 lobe projects from the anterior margin above the base of the antenna. The 

 abdomen is smooth, naked, devoid of spines and ridges ; the abdominal pleurjB 

 are rounded. Ocular peduncle free, spineless. The peduncle of the antenna 

 is also destitute of spines ; the flagellum is wanting in the only specimen 

 obtained. The chelipeds are also missing. The ambulatory appendages are 

 smooth, unarmed ; the dactyli long (equal to the propodites in length), 

 slightly curved, acute at the tips. The appendages of the third, fourth, 

 and fifth abdominal segments are simple and rudimentary. The merus of 

 the third maxillipeds is short, its antero-internal margin three-toothed ; the 

 palpus of this appendage is nearly as long as the merus and ischium 

 combined. 



Length 12 mm. ; carapace, 6 mm. ; breadth, 4 mm. 



Station 3354. 322 fathoms. 1 male. 



This species nearly resembles M. poUta (Anoj)lonotus poUtiis Smith), but the 

 carapace of the former is longer and narrower, the rostrum is curved more 

 strongly downward, and the propodites of the ambulatory limbs are much 

 shorter in proportion to the dactyli. 



Munidopsis latirostris Fax. 



Elasmonotus latifro7is Hend., Ann. Mag. Nat. Hist., 5tli Ser., XVI. 416, 18S5 ; Rep. Challenger Anomura, 



p. 160, Plate XIX. Fig. 1, 1888. {Nom. praoc.)* 

 Orophorhpichiis latifrons A. M. Edw. et Bouv., Ann. Sci. Nat., ZooL, 7*""' Sur., XVI. 287, 1894. 



Station 3381. 1772 fathoms. 1 fem. 

 3391. 153 " 1 " 



In his first description of this species Prof. Henderson describes the 

 eye-stalks as fused with the sides of the rostrum, while in his final report he 

 states that they are slightly movable. In the " Albatro.ss " specimens they 

 are firmly soldered to the rostrum. Henderson also says that the ambulatory 

 limbs have a few short blunt spines on the anterior margin of the meri, 

 carpi, and propodites. In the "Albatross" specimens the spines of the meri 

 are on the posterior margin of the joint, but these specimens agree so well with 

 Henderson's description in other respects that I do not doubt that they be- 

 long to the same species. The unique " Challenger" specimen was obtained 

 between Papua and the Admiralty Islands at a depth of 1070 fathoms. 



* See pp. 81, 82. 



