^■^■^ 



218 



STALK-EYED CRUSTACEA 



are devoid of dorsal spines and the gastric region is armed anteriorly with 

 two small teeth in the median line. The specimen was afterwards described 

 and figured with more detail by G. 0. Sars.* The third and fourth abdomi- 

 nal segments are represented as armed with dorsal teeth, similar to^ though 

 shorter than, those of G. brevispi'nis, yvhlle the gastric region appears imarmed. 

 The specimen was in a bad state of preservation when it reached Professor 

 SarSj and Suhm's figure, which was probably drawn soon after the capture, is 

 presumably correct as far as the gastric teeth are concerned. The ^' Albatross " 

 specimens appear to be specifically distinct from the "' Challenger " species, 

 and may be diagnosed at once by the prominent dentate gastric crest, the 

 small size or even absence of the lower spine of the infero-posterior 

 angle of the carapace, and the great breadth of the antennal scale. The 

 pleura) of the first four abdominal segments are expanded posteriorly into 

 rounded lobes. A deep transverse dorsal fold separates the two dorsal spines 

 of the second segment of the abdomen. 



Wood-Mason describes the dorsal spines of the first abdominal somite of 

 G. hrevispinis as subequal. In the "Albatross" specimens the anterior of 

 these spines is at the best only half as long as the posterior one, 



G. hrevisjnnis was first obtained in the Bay of Bengal (690-1748 fathoms) 

 by H. M. Indian Marine Survey Steamer " Investigator." 



Family EUCOITIDiE. 



EUCOPIA Dana. 



Proc. Acad. Nat. Sci. Pliila., YI. 19, 1852; U. S. Explor. Expcd., Crustacea, Pi I., p. G09, 1852 



Eiicopia australis Dana. 



Proc. Acad. Nat. Sci. Pliila., VL 28, 1852; U. S. Explor. Exped., Crustacea, Pt. I., p. 609, 1852, Atlas, 



Plate XL. Fig. 10, 1855, 



Station 2627 Hyd. Between 1770 fathoms and surface, submarine tow- 

 net (bottom, 1832 fathoms). 4 specimens. 



Station 2637 Hyd. Between 700 fathoms and surface, submarine tow- 

 net (bottom, 773 fathoms). 1 specimen. 



1 specimen. 



Station 3377. 



764 fathoms. 



" 3406. 



551 



" 3433. 



1218 



1 

 1 



u 



Qi. 



^o 



* Rep. Challenger Scbizopoda, p. 48, Plate VII. Pig. 6-10, 1885. 





