36 STALK-EYED CRUSTACEA. 



^THUSINA Smith. 

 Aim. Rep. U. S. Fisli Comm. for 1882, p. 349, 18S4 [Et/iusina]. 



.ffithiisina gracilipes (Miers). 



Elhuta (ElAusina) gracilipes Miers, Rep. Challenger Brachyura, pp. 332, 333, Plate XXIX., 1886. 



Station 3361. 1471 fathoms. 1 fern. 



" 3 males, 2 fern. 



" 1 male. 



" 2 males. 



" 1 male, 2 fem. 



" 1 fem. 



" 2 males, 1 fem. 



In most of these specimens the spine at the antero-external angle of the 

 carapace is long, as in the figure of the typical form of Miers's species, but it 

 is bent outward at a sharper angle, as in Miers's var. rohista. The outer 

 .spine of the front is longer in proportion to the inner spine, and the carapace 

 is rather narrower. The legs are shorter (as in var. ?-obusia), while the chela 

 is midway in form between the typical gracilipes and var. robusfa. 



The " Challenger " specimens were obtained near the Philippines in 700 

 fathoms, in the Arafura Sea in 800 fathoms, and in the Banda Sea in 1425 

 fathoms. 



iEthusina challenger! (Miers)? 



?EUusa {Eiltusina) ehalUngeri Miers, Rep. ChaUenger Brachyura, p. 331, Plate XXVIII. Fig. 2, 1886.* 



Station 3414. 2232 fothoms. 1 fem. 



I refer this specimen with some doubt to JE. challmgeri. The fingers of the 

 chelse are longer than in that species, the internal distal angle of the iscliium 

 of the external maxillipeds is more salient, and the merus more pear-.shaped ; 

 the front, too, is narrower, the median sinus deeper, and the internal orbital 

 angle less prominent. 



I believe that the depth from whicli this specimen was brought is the 

 greatest at which any Brachyuran has ever been taken. ^. abyssicola Smith 

 was dredged by the " Albatross " off the oast coast of the United States in 

 2221 fathoms. Miers's specimen of /E. chaUcngcri was obtained from 1875 

 fathoms, in Japanese seas. 



• On pp. 329, 332, Miers refers to this species by the name of JS. ninuatifroiis. 



