CRUSTACEA CASPIA. 197 



palm distinctly concave, and defined below by a nearly rectangular project-' 

 ing lobe armed with 2 strong spines, between which the strongly curved 

 dactylus impinges, when closed. 



The last pair of uropoda (fig. 22) are still larger than in the female, 

 exceeding even considerably the whole urosome in length. This is cliiefly 

 caused by the fuller development of the outer ramus, the structure of which 

 otherwise agrees with that in the female. 



Colour. — All the specimens examined exhibited a unifonn greyish 

 white colour, without any conspicuous pigmentary marks ; but this may most 

 probably not have been the case in the living state of the animal. 



Occurrence. — This form has been collected by Mr. Warpachowsky 

 in 4 different Stations of the North Caspian Sea. Two of these (St. 1 6 anp 

 52) were located oif the island Podgornoj", another (St. 49) between the 

 islands Kulaly and Morskay, the 4th (St. 58) at some distance north of the 

 Tschistyi-Bauk. In the latter Station only a single specimen was secured, in 

 each of the others several specimens occurred. 



Dr. Grimm collected the species at Baku, from the shores down to 6 

 fathoms, and moreover at the west coast of Sara among Zostera, and at 

 Krasnowodsk in a depth of 20 fms. 



Out of the Caspian Sea this species has not yet been recorded. 



3. Gmelina Kusnezowi (Sowinsky). 



(PI. IV). 



Gammanis Kusnezowi, Sowinsky, Les Crustaces de la mer d'Azow, 

 p. 95, PL VIII. 



Specific Characteristic. — 'BoAj rather slender and compressed, especi- 

 ally in the male, the back being, however, not carinated, but having a double 

 series of tuberculiform projections, successively increasing in size, and as- 

 suming on the posterior segments of mesosome and those of metasome a 

 mammilliform shape. Segments of mesosome (except the last 2) produced on 

 each side, just above the junction of the coxal plates to very conspicuous, 

 lateraly projecting rounded prominences. Segments of urosome smooth above, 

 the last 2 having on each side dorsally 2 small spinules. Cephalon consider- 

 ably attenuated in front and having on each side a conspicuous, umboniform 

 prominence, rostral projection extremely small, lateral lobes narrowly rounded 

 in front. Anterior pairs of coxal plates rather deep and of a similar shape to 

 those in the preceding species; 5th pair somewhat oblique and much deeper 

 anteriorly than posteriorly. The last 2 pairs of epimeral plates of metasome 

 nearly rectangular. Eyes oval reniform and highly protuberant, being placed 



■tns.-MaT. cip. 197. 19 



