Gamiiiarus 467 



small, iuiior raraus scarcely * ^ as long as outer, about as long as the sliort 

 peduncle. Telson rather broacler than long, lobes divergent, each with 

 2 spinales on rounded apex. L, 9 mra. 



Caspian Sea. Froni stoiies oii shure, and aniong Zostera. 



11. G. weidemanni O. Sars 1896 G. w., G. U. Sars in: Bull. Ac. St.-Petcrsb.. 

 ser. 5 V.4 p. 462 t. 1» f. 1-11. 



Body rather robust, back broadly rounded, smootb except for 2 pairs 

 of minute spinules on pleon segment 6. Head, lateral lobes obliquely rounded, 

 Upper Corner the niore prominent. Side-plates 1 — 4 setose, 1^* rather expanded, 

 2'^ a little narrowed distally, 4^^ as broad as deep. Pleon segments 2 and 3, 

 postero-lateral corners acutely quadrate. Eyes of nioderate size, oval reniform, 

 dark. Antennae 1 and 2 equal, about ^/^ as long as body. Antenna 1, 1^* Joint 

 massive, longer than 2<i and 8'^ combined, flagellum longer than peduncle, 

 16-joiuted, accessory flagellum 5-jointed. Antenna 2. autepenultimate Joint 

 of peduncle projecting, ultimate Joint shorter than penultimate, flagellum as long 

 as these two combined, 8-jointed. Mandibular palp about as long as the trunk, 

 setose, 3<^ Joint curved, narrowly ti'uncate at apex. Guathopods 1 and 2, 

 5^^ Joint Short, 6*'^ rectangular, palm rather oblique; rather strong in Q, but 

 stronger in d, in both sexes gnathopod 2 larger than guathopod 1, but 

 similar in shape. Peraeopods 1 and 2, 4*^ Joint large, especially in peraeopod 2. 

 both long and broad. 5*^ Joint short and broad, both densely setose. Peraeo- 

 pods 3 — 5 rather stout, spinöse, 2*^ Joint in peraeopod 3 rounded quadrangular, 

 with rounded lobe produced downward, in peraeopod 4 a little longer, upper 

 part wider, but naiTowed ')elow, leaving no free corner, in peraeopod 5 much 

 larger, bind margin evenly convex, produced downward in broadly rounded 

 lobe. Uropod 3 reaching much beyond the others, outer ramus about twice 

 as long as peduncle, broad, fringed with setae, 2^ Joint minute, iimer ramus 

 longer than peduncle, more than half as long as outer, with setae and 2 spines on 

 inner margin. Telson scarcely longer than broad, lobes tapering, divergent, 

 each with 3 spines on Munt apex. L. c5" 11 mm. 



Caspian Sea (Kay Karabugas). On sandy bottoni near shore. 



12. G. maeotieus Sowinski 1894 G.m., Sowinski in: Meni. Soc. Kiew, i:\^ 

 (p. 6) t. 1 A, 2 I 1896 G. m., G. 0. Sars in: Bull. Ac. St.-Petersb.. ser, 5 vA p. 465 t. 9 

 f. 12—20. 



In many respects agreeing with G. weidemanni, but some of the 

 differences are stiiking. Head, lateral lobes narrowly rounded, prominent. 

 Side-plate 1 not at all expanded distally. Pleon segments 2 and 3, postero- 

 lateral corners simply, not acutely, quadrate. Eyes rather small, decidedly 

 reniform. Antennae 1 and 2 subequal, stout, ^/^ as long as body. Antenna 1, 

 flagellum rather shorter than peduncle, 8- or 9-jointed, accessory flagellum 

 5-jointed. Autepenultimate and penultimate joints of peduncle distally widened, 

 setose, ultimate Joint also setose, scarcely shorter than penultimate, flagellum 

 6-jointed. Mandibular palp more than twice as long as the trunk, 3^ Joint 

 as long as 2<^, both broad, setose. Gnathopods 1 and 2 in 9 weak, subequal, 

 in 6 much more powerful, unequal. Gnathopod 1 in d, 6*^ Joint naiTOwly 

 oblong. Gnathopod 2 in d, 6**^ Joint large and broad, oval quadrangular. 

 L. d 12 mm. 



Sea of Azov; Caspian Sea. Shallow water. 



13. G. crassus O. Sars 1894 G'. c. (0. Grimm in MS.), G. 0. Sars in: Bull. 

 Ac. St.-Petersb., ser. 5 u 1 p. 362 t. 13. 



30* 



