334 G. 0. SARS, [N. 8.1 
(fig. 12), 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 ocu¥ar 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 corneæ 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 Y, 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- 
chowsky at Stat. 48, off the Tschistyj-Bank. 
Mélanges biologiques. T. XIII, p. 498. 
