230 " THETIS " SCIENTIFIC RESULTS, 



corners, the upper corner being slightly longer than the lower ; 

 the posterior border of the fourth is transverse, with the lower 

 angle subacute ; in the two following the lower angle becomes 

 more produced and the upper obliquely curved ; the seventh is 

 very acute, and one-third longer than broad. Pleon segments 

 subequal in length, with the posterolateral angles of the first four 

 acutely produced, the fifth being somewhat rounded. 



Posterior Region of Body 



viewed froji below. 



Fig. 2Qb. 



Right AntknKjE. 

 Fig. 20c. 

 Telson more than one-fifth wider at the base than long, sides 

 •converging to the obtusely rounded extremity; surface very 

 slightly convex ; distal margin uneven, with a few small spines 

 and setfe. Eyes small, subtriangular, longer than broad, with 

 their inner acute angles separated by a space about equal to the 

 length of the cephalon without the rostrum. 



First antennae having the first two joints very broad, with their 

 anterior margins produced into thin acute edges, flagellum con- 

 sisting of nine or ten articulations and a})out equal in length to 

 the peduncle ; second antennae one-third longer than the first, with 

 the peduncle as long or longer than the flagellum ; the latter 

 consists of about sixteen articulations. 



The mandible is strikingly like that of Kocinela dannioiiensis, 

 as figured by G. O. 8ars.* The remaining appendages of the 



• Sars— Crust, of Norway, ii., 1897, p. 65, pi. 27, M. 



