156 THE VOYAGE OF H.M.S. CHALLENGER. 



ably long and slender ; the meri are obscurely granulated, and a few spinules are present 

 at their distal end, and on their anterior margins, while a single spinule also occurs at 

 the distal anterior end of the carpi. The ambulatory dactyli are almost straight, each 

 terminating in a curved, horny claw, and a series of delicate horny spinules is present 

 on their posterior margin. 



The eyes are rounded, and firmly fused together on the ventral aspect ; the peduncles 

 are not prolonged into spines. The antennal flagellum is of moderate length. The 

 merus of the external maxillipedes bears two prominent and subequal spines on the 

 proximal half of its inner margin. 



The second and third abdominal segments are each provided with a transverse sulcus ; 

 the remaining segments are smooth and glabrous. The size of the abdomen as a whole 

 is unusually small, when compared with that of the cephalothorax. 



I have dedicated this well-marked species to my friend and colleague, the Eev. Dr. 

 Miller, CLE., Principal of the Madras Christian College. 



Breadth of carapace (of a female with ova) 11 mm., length of body (including rostrum) 

 31 mm., of carapace (including rostrum) 16 mm., of chelipede 39'5 mm., of first ambu- 

 latory leg 33'5 mm., diameter of ova 1*3 mm. The body of the largest male specimen 

 measures only 27 mm. in length. 



Habitat.— Station 207, off Tablas Island, Philippines ; depth, 700 fathoms ; bottom, 

 blue mud. A female with ova, and two males. 



Munidojisis trijida, Henderson (PI. XVI. fig. 2). 



Munidojjsis trijida, Henderson, Ann. and Mag. Nat. Hist., ser. 5, vol. xvi. p. 415, 1885. 



Characters. — The carapace Ls covered with short transverse rugosities of no great size, 

 which are best seen on the postero-lateral surface ; a few short hairs are also scattered 

 over the surface. The gastric area is moderately convex, and armed with two prominent 

 spines placed behind the base of the rostrum, while the tubercular rugosities are 

 somewhat rounded, and comparatively few in number ; the cardiac area is indistinctly 

 circumscribed, and a broad shallow groove crosses it transversely near the middle. The 

 rostrum is about half the length of the carapace, with a proximal broad and flattened 

 portion which is traversed by a median dorsal carina, and a laterally compressed, and 

 distinctly upturned terminal spine ; the margins of the flattened part are prolonged 

 into two short spinules which, in the single specimen, are not placed in the same trans- 

 verse line. The lateral border of the carapace is armed with four subequal and equi- 

 distant spines, and a spinule occurs on the oblique antero-lateral margin immediately 

 behind the antennal peduncle ; the posterior margin is prominent though unarmed, and 

 a rather wide, smooth, band-like area occurs on the carapace in front of it. 



The chelipedes are long and sub-cylindrical, with the joints spinose and faintly 



