352 G. 0. SAKS, 



erior ones being somewhat more slender than the anterior. The proijodos in 

 both pairs is scarcely broader than the carpus and about equals it in length. 

 In the posterior pair both the carpus and the propodos appear somewhat 

 more elongated than in the anterior one. 



The 2 anterior pairs of pereiopoda (fig. 21) are of moderate size and 

 resemble those in G. minutus, except that the meral joint is somewhat less 

 expanded. 



The 3 posterior pairs of pereiopoda (figs. 22 — 24) are rather slender, 

 and have their outer ])art supplied with fascicles of slender bristles. The 

 basal joint of the antepenultimate pair (fig. 22) is very broad and of a 

 rounded quadrangular form, with the infero-posteal corner rounded off; that 

 of the penultimate pair (fig. 23) is considerably smaller, and has the post- 

 erior edge evenly curved. The last pair (fig. 24) have, as usual, the basal 

 joint larger than that of the 2 preceding pairs and of a rather regular oval 

 form, with the posterior edge but sliglitly curved, and the infero-posteal 

 corner expanded to a rounded lobe reaching about to the end of the ischial 

 joint. The outer part of these legs, in all the specimens, was broken off. 



The 2 anterior pairs of uropoda (fig. 25) have the rami equal-sized and 

 narrow linear in form, being edged with a few lateral spines in addition to 

 the usual apical ones. 



The last pair of uropoda (fig. 26) are remarkable by their unusual length, 

 even considerably exceeding that of the urosome. The basal part is com- 

 paratively short, and armed at the end below with a transverse row of 

 strong spines. The inner ramus, as in most of the Caspian species, is very 

 small, terminating with 2 slender spines. The outer ramus, on the other 

 hand, is unusually elongated and rather slender, with the terminal joint well 

 developed and occupying about the third part of the length of the ramus. 

 The proximal joint has outside 2 small fascicles of spines, and inside a row 

 of about C slender, ciliated setae; at the end it carries, moreover, a few spines 

 and simple bristles. The terminal joint has the outer edge smooth, the inner 

 provided with a row of 4 sets, and moreover carries on the tip 3 slender bristles. 



The telson (fig. 27) is rather narrow, being much longer than it is broad 

 at the base, and gradually tapers distally. Each half is armed with a small 

 lateral spinule and another apical one accompanied by a small hair. The 

 cleft is rather narrow and extends to the base of the telson. 



Occurrence. — Only a few specimens of this form were found among 

 other Gammari collected by Mr. Warpachowsky at St. 53 and 54, both 

 located at some distance north of the islands Kulaly and Morskoj. In the 

 collection of Dr. Grimm I have not yet succeeded in detecting any specimen 

 of this species. 



$B3.-MaT. CTp. 332. ^q 



