96 



STALK-EYED CRUSTACEA. 



4 



Munidopsis depressa Fax. 

 Pkle XXII., Fig, 2, 2% 2K 



Bull. Mus. Comp. Zoo]., XXIV- 189, 1893. 



Closely allied to if. hamata^ but differs as follows : the cephalothorax is 

 more swolleUjSO that the sides of the carapace are visible below the epimeral 

 sutures when the animal is viewed from above. The median row of spines 

 on the carapace consists of a smaller number of spines (two on the gastric 

 region^ one on the cardiac region, and one on the posterior margin). The 

 spinules of the lateral margin of the carapace are less developed. The de- 

 pression on the carapace involves the gastric region to a greater degree. 

 The anterior margin of the carapace is not so straight, and it is not spinulif- 

 erous. The antero-lateral spine is more prominent, the eyes smaller, and 

 the antenna) shorter (shorter than the carapace). There is, moreover, no 

 spine on the fifth abdominal segment. 



Length, 32 mm.; carapace, 19 mm.; rostrum, 5 mm.; breadth of cara- 

 pace, 12.5 mm. 



Station 3425. 680 fathoms. 1 male. 



Munidopsis aspera (IIeni).). 



Elasmonotus asper Hend., Ann. Mag. Nat. Hist., 5tli Ser., XVL 416, 1885 ; Rep. Challenger Anomura, 



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

 Munidopsis aspera Fax., Bull. Mus. Comp. Zool., XXIV. 188, 1893. 



Station 3357. 782 fathoms. 



u 



u 



6i 



u 



u 



3358. 555 



3370. 134 



3402. 421 



3403. 384 



3406. 



551 



U 



u 



u 



a 



<c 



1 fern, ovio;, 

 1 male. 



1 fern. 



2 males, 5 fem. (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 numer- 

 ous and less spiny than in those secured at the other stations. The ambula- 

 tory 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. 



r 



