M3B-BCTm MIVinEPATOPCKOil AKAAEMIM HAyKT,. 1895. OKTflBPb. T. III. N? 3. 



(Bulletin de TA^ademie Imperiaie des Sciences de St.-Petersbourg. 

 1895. Octobre. T. Ill, jYs 3.) 



Crustacea caspia. 



Contributions to the knowledge of the Careinological Fauna 



of the Caspian Sea. 



By G. O. Harss, 



Professor of Zoology at the University of Christiania, Norway. 



Part III. 



-A. 3S/E IP I^ 1 1^ O ID .A.- 



Third Article. 



Gammarldfle iconeludedi. Coropiiiidie. 



With 8 autographic plates. 



(Presente Je 19 avril 1895). 

 18. Niphargoides corpulentus, G. 0. Sars, n. s^). ■ 



(PI. XVll, figs. 1—19). 



Specific Characters. — J. Body very robust and tumid, with broadly 

 vaulted back. Cephalon exceeding in length the 1st segment of mesosome, 

 lateral lobes obtusely rounded. Anterior pairs of coxal plates somewhat 

 deeper than the corresponding segments, and fringed on the distal edge 

 with moderately long bristles; 1st pair scarcely expanded distally; 4th 

 pair about as broad as they are deep. Last pair of epimeral plates of 

 metasome slightly produced at the lateral corners, and having outside the 

 latter an oblique row of bristles. Segments. of urosome slightly raised dor- 

 sally, the last 2 with a pair of small, subdorsal spinules. Eyes well developed, 

 though not very large, oval reniform, pigment dark. Antennas short and 

 stout, the superior ones about twice the length of the cephalon, with tlie 

 flagellum fully as long as the last 2 peduncular joints combined, accessory 

 appendage half the length of the flagellum and 4-articulate. Inferior antennaj 

 about the length of the superior, flagellum longer than the last peduncular 

 joint. Gnathopoda moderately strong and somewhat unequal, the posterior 

 ones being the larger, propodos in both pairs oblong oval, not tapering 

 distally, palm well defined and shorter than the hind margin. Pereiopoda 



"^ns.-MaT. CTp. 183, I 



