(&xxv1)] CRUSTACEA CASPIA. 61 
those in the preceding species; though being perhaps a little smaller and 
somewhat more obliquely truncated at the tip, terminal part (fig. 4) in front 
of the outer corner occupying about Y, of the length of the scale, apical 
segment well-defined. Pereiopoda (fig. 6) of a similar structure as in M. 
Uliskyi, but having the meral joint comparatively shorter, and the tarsal 
part much longer than the latter. Outer ramus of the 3rd pair of pleopoda 
in male (fig. 11) exceeding half the length of the inner; 4th pair (figs. 10 
and 12) reaching beyond the tip of the telson, and having the exterior flagel- 
. lum nearly of same length as the stem of the ramus. Telson (fig. 7) scarcely 
longer than the last segment of metasome, and having the outer part slightly 
attenuated, lateral edges somewhat flexuous and armed each with from 18 
to 20 spinules, the outermost of which is not far remote from the tip, apical 
sinus (see fig. 9) well-defined, though not very deep, and bordered with 
about 22 regular dentiform projections, terminal lobes, as usual, tipped 
by a somewhat larger spine. Inner lamella of the uropoda (fig. 8) moderately 
tumefied at the base, with the otolith rather large, inner edge armed, 
below the marginal setz, with about 9 slender spines, the outer 2 of which 
are placed at some distance from the others. Body everywhere ornamented 
with finely dendritic ramifications issuing from a dorsal row of pigmentary 
centres, arranged in the usual manner. Length of adult female reaching 
18mm. . 
Remarks. — Although I have not had an opportunity of examining 
the type specimens of Czerniavsky, which were wanting in the collection 
sent to me, I cannot doubt that the above described species is that so named 
by the said author, as it agrees rather well with his description and figures. 
It is easily distinguishable from the preceding species by its much shorter 
and stouter form of body, and the richly dendritic pigmentary ornament of 
the dorsal face, as also by the comparatively shorter telson. 
Occurrence. — Three specimens of this form, 2 females and 1 male, 
were contained in the collection of Warpachowsky, and occurred at Stat. 
28, north of the peninsula Mangischlak'). To judge from their size, they 
would seem to belong to the „varietas major“ of Czerniavsky, which has 
not yet been recorded from the Caspian Sea. — According to Mr. Czer- 
niavsky, numerous specimens of the smaller form (forma typica) were col- 
lected by Prof. Kowalevsky at Petrowsk or Baku, close to the shores. 
Distribution. — According to Mr. Czerniavsky, the larger form of 
this species (var. major) has been recorded from 2 different localities of the 
1) In a subsequent collection by the same naturalist this species was rather abinde. 
represented in 2 other places, viz., at Stat. 49, between the island of Kulaly and that of Mor- 
`- Skoj, and 52, at the northern — of the island Swjatoj. ; 
Mélanges biologiques. T. XIII, p. 409. 
