332 6. 0, SARS, [Ν. s. 1Y 
The eye (see fig. 3) exhibits, as in the female of that species, only 2 
small corneæ, which are placed far apart, at the outer corners of the ocu- 
lar lobe. 
The superior antennæ (fig. 4) are rather elongated, and have both edges 
of the peduncle supplied with bristles; the 2nd peduncular joint is much the 
longest. 
The 1st pair of legs (fig. 5) are comparatively shorter than in P. bila- 
mellata, otherwise of a very similar structure. 
The same also applies to the 2nd pair (fig. 6), which are particularly 
short and stout. 
The 3 posterior pairs of legs (figs. 7, 8) are comparatively less strongly 
built than in the 2 preceding species, but exhibit a very similar longitudinal 
relation of their several joints. 
The uropoda (see fig. 9) are not very large, scarcely equalling in length 
' of the metasome. The scape is simple cylindric, and has inside but 4 small 
setze. The rami are somewhat unequal, the inner one being considerably shorter 
than the outer and, as usual, gradually tapering distally; it has on the inner 
edge only 5 small spinules and on the tip 2 unequal ones. The outer ramus 
about equals in length the scape, and has, besides the 2 usual apical spines, 
only a single small seta on the inner edge near the tip. 
The telson (ibid. and fig. 10) is nearly semicircular in form, and has the 
edge slightly serrate, 2 of the serrations on each side of the tip being parti- 
cularly strong and dentiform. 
Colour. — The specimens examined were uniformly whitish, without any 
colouring marks. 
Occurrence. — Of this form 2 female specimens were collected by Mr. 
Warpachowsky at Stat. 52, located off the northern point of the island of 
Swjatoj. A few specimens of the same Species were moreover contained in 
à small collection of Caspian Crustacea sent to me from the Museum in 
St. Petersburg for examination. According to the label, they were collected 
by the late Academician Baer off the peninsula Mangyschlak. 
10. Pseudocuma scabriuscula, G. O. Sars, n. sp. 
(Pl. XII, figs, 11—14). 
Specific Characteristics 2. — Body very short and stout, with the anterior 
division considerably tumefied, and sharply marked off from the posterior one. 
Integuments everywhere scabrous with small projecting spikes. Carapace rather 
large, having on each side in its anterior part a very conspicuous horizontal 
crest continued to the tip of the pseudo-rostral projection; branchial regions 
well defined; gastric area without any keels; pseudo-rostral projection, as in 
. Mélanges biologiques. T. XIII, p. 496, 
