96 BULLETIN OF THE 



^ga incisa Schiodte & Meinert. 



Plate m. Fig. 1. 



^ga incisa Schiodte & Meinert, Naturhist. Tidssk., K. III., B. XII., p. 373, 

 PI. X. (Cyra. IV.) figs. 13-15. 1879. 



A single specimen, apparently of this species, was taken at Station 307, from 

 a depth of 333 fathoms, in Lat. 31° 57' N., Long. 78° 18' 35" W, 



It agrees so closely with Schiodte and Meinert's description that I have little 

 doubt of its identity with that Mediterranean species, although the body is pro- 

 portionally narrower and the segments of the pleon more regularly curved 

 above than represented in. the figure of ^. incisa given by those authors. 



Ill our specimen the body is nearly three times as long as broad, sparingly 

 punctate, well rounded above. 



The head is roimded behind, presenting no ocular lobes ; in front it is pro- 

 duced into a distmct, pointed process projecting downward between the bases 

 of the antennula), separating them and nearly touching the frontal lamina, 

 which is small and rhomboidal. The first two segments of the antennula? are 

 short and small, and rounded in front, not enlarged as in ^. psora Kroyer ; 

 the third segment is longer than the first two, and is followed by a slender fla- 

 gellum, longer than the peduncle, composed of about fifteen segments, of which 

 the first is the longest, being as long as the next two, instead of " quam secundo 

 paulo longiore," as in the typical specimen of the species. The antenna, when 

 reflexed, surpass the second thoracic segment; the flagellum is longer than the 

 peduncle, and composed of less than twenty segments. 



The eyes are large, and meet broadly on the median line; ocelli in about ten 

 horizontal rows, half of which meet on the median line in front. 



The first thoracic segment is longer than the second, thence they increase 

 slowly in length to the fifth or sixth, and the seventh is short. The epimeral 

 region of the first segment is marked by an obliquely descending depressed 

 line. The epimera are all angulated behind, though only the last two are sen- 

 sibly produced, and all are marked by one or two oblique curved lines, running 

 downward and backward, the posterior one ending in the lower angle. The 

 last epimeron does not attain the lateral angle of the first segment of the 

 pleon. The legs are weak, and armed with but few small and short spinules 

 throughout. 



All the segments of the pleon are evident, but the first is very short above ; 

 the first four are distinctly angulated laterally. The telson is subtriangular, 

 distinctly notched behind, as well as minutely crenulated and spinulose. The 

 basal segment of the uropods is produced internally about half the length of 

 the inner ramus, which is obli([uely elong'^te triangular, larger and broader 

 than the narrowly ovate outer one; both are (.iliited and minutely denticulate. 



Length, 13.5 mm.; breadth, 5 mm. 



I have seen no other specimens. 



