614 Eurystheus 



a sort of oblong oval, narrowed distally, bind margin rather sinuous in peraeo- 

 pods 4 and 5; finger short. üropod 3, peduncle as long as the equal rami. 

 Telson little longer than broad, almost round, witb a spine at each apical 

 angle. L. 6 mm. 



South-Pacific (east of New Zealand). Depth 2000 m ? 



6. E. ostroumowi (Sowinski) 1898 Protomedeia o., Sowinski in : Mem. Soc. Kiew, 

 t?. 15 p.475 t. 10 f. 1—19. 



Fleon Segments 4 and 5 each with 1 dorsal tooth, preceded by a 

 spinule or setule (bind margin of segment 5 in figure emarginate between 

 2 teetb?). Head, lateral lobes outdrawn to a small acute point. Side- 

 plate 1 witb 2 little teetb on lower margin, 2^ — 4*^ witb denticle at lower 

 bind Corner. Pleon segment 3, postero-lateral corner acute, slightly upturned, 

 witb small sinus above. Eyes large, reniform, almost Alling tbe lateral lobes of 

 head. Antenna 1, 1^* and 3*^ joints equal in lengtb, shorter than 2*^; iiagellum 

 subequal to 2*^ and 3* joints combined, 9-jointed; accessory flagellum 4-jointed. 

 Antenna 2 about as long as antenna 1, ultimate Joint of peduncle a little shorter 

 than penultimate; flagellum a little longer than penultimate Joint, 9-jointed. 

 Mandible, 2*^ and 3"^ joints of palp equal. Maxiila 1, inner plate fringed witb 

 numerous setae. Maxiila 2 and maxillipeds normal. Gnatbopod 1 as in E. tbom- 

 soni (p. 613). Gnatbopod 2 in 9 nearly as in E. thomsoni, but 6**^ Joint 

 scarcely widening to palm, which is defined by a small tooth. Gnatbopod 2 

 in d, 6**1 Joint very large, widening to palm, scarcely longer than broad, 

 palm defined by a strong tooth, and having a median sinus between two 

 denticulate slopes, finger strong, matching palm, which is subject to some 

 variations. Peraeopods 1 and 2, none of the joints specially robust. Perae- 

 opod 3, 2^ Joint oblong oval. Peraeopod 4, 2^ Joint much larger than in 

 peraeopod 3 but of the same shape, 4^^ (in ö only) monstrously expanded 

 behind so as to resemble a 2^ Joint rather than a 4*^, nearly as broad as 

 long, narrowed distally, almost as large as the 2** Joint, but differeutly 

 shaped. üropod 3, peduncle as long as outer ramus, which is rather shorter 

 than inner. Telson as in E. thomsoni. L. a little under 11 mm. 



Bosphorus. Down to 85 m. 



7. E. exsertipes (Stebb.) 1888 Gammaropsis e., T. Stebbing in: Eep. Voy. 

 Challenger, u29 p. 1093 1. 112 | 1893 Protomedeia e., A. Della Azalie in: F. Fl. Neapel, 



V. 20 p. 440 t. 57 f. 12. 



Head, lateral lobes narrow, acute. Side-plate 1 



rounded in front, produced a little forward; 2^ in ö 



broader than deep, 5*^ nearly as deep as 4*^.' Pleon 



--4"' Joint segment 3, postero-lateral corners rounded. Eyes small, 



subrotund. Antenna 1 as long as the body, 1^* Joint 



as long as the head, 2^ much longer, 3'^ intermediate ; 



u-c"' Joint flagellum rather shorter than peduncle, 17-jointed; 



accessory flagellum witb 4 slender joints. Antenna 2 



rather shorter, ultimate Joint of peduncle a little shorter 



than tbe elougate penultimate, flagellum about half 



Fig. 107. ^g ]Qjjg ^g peduncle, 12-jointed. Upper lip faintly 



"Gnath'opor2 emarginate. Gnatbopod 1, 5**^ Joint a little shorter 



than 2*1, a little longer than 6***, 6*^ narrowly oval, 



front witb spines in rows, bind margin and palm a continuous convexity, 



palm finely pectinate, finger serrate, in ö even longer than the 6*^ Joint. 



