498 G. 0. SARS, [t. XIII 



(fig. 1 2), as a somewhat projecting, obtusely-rounded prominence in front of 

 the ocular lobe. In a dorsal view of the animal (figs. 11 and 13), this pro- 

 minence is found to exhibit a similar structure to that in the 2 preceding 

 species, being divided in the middle, by a deep incision, into 2 parts, which 

 only close to the ocular lobe meet by 2 small converging apophyses. The 

 antero-lateral corners are nearly rectangular, though somewhat rounded at 

 the tip, being defined above by an even sinus. The inferior edges of the cara- 

 pace are rather strongly curved in the middle. 



The free segments of the mesosome are evenly vaulted above, without 

 any keel or projections, though being rather sharply marked off from each 

 other. They successively decrease in depth posteriorly, and the last segment 

 is rather small, with the epimera evenly rounded. 



The metasome shows an unusually poor development, not nearly attaining 

 the length of the anterior division of the body, and has the segments narrow 

 cylindrical and scabrous like the other part of the body. 



The eye (see fig. 13) is well developed, with all 3 corneae distinct. 



The several appendages of the body, as far as they could be examined 

 in the solitary specimen before us, would not seem to differ materially in 

 their structure from those in the other species of the genus. 



The uropoda (fig. 14) are rather small, not nearly attaining l / z of the 

 length of the metasome. The scape is comparatively short, and provided in- 

 side with a few small bristles. The rami are about equal-sized, and consider- 

 ably longer than the scape, both gradually tapering distally and terminat- 

 ing in a slender spine. The inner ramus has the inner edge slightly serrate, 

 but without any distinct spinules. 



The telson (see fig. 11) is small and semicircular in form. 



Colour. — The specimen exhibited a uniform greyish white tinge, without 

 any pigmentary ornament. 



Occurrence. — The above-described specimen was taken by Mr. Warpa- 

 chowskyat Stat. 48, off the Tschistyj-Bank. 



Bulletin N. S. IV (XXXVI) p. 334. 



