268 



Oediceroides 



alike, powerful, 5*^' Joint distally expanded into a broad setose process, 6* 

 elongate oval or squarish, palm louger than bind margin. 



4 species. 



il 



Synopsis of species: 



Eyes represented only by a pigmeiit niass 



, Eyes not represented 2. O. proximus 



l Eyes distinct — 2. 



I Back without tubercles 3. O. cinderella 



\ Back studded with tubercles 4. O. ornatus . 



■ 3^ johlt 

 Flagellum 



1. O. i'ostratus . p. 268 

 p. 269 



p. 269 

 p. 270 



1. O. rostratus (Stebb.) 1883 Oediceropsis rostrata, T. Stebbing in: Ann. nat. 

 Hist., ser. 5 v. 11 p. 204 | 1888 Oediceroides r., 0. consjncim, T. Stebbing in: E,ep. Voy. 



Challenger, v. 29 p. 844; p. 547 t. 60, 61 ' 

 1893 Halimedon rostratus, A. Della Valle in : 

 F. Fl. Neapel, v. 20 p. 540 t. 58 f. 46—49. 



Body ünely pubescent, peraeon 

 Segments 1 — 6 transversely furrowed, 

 Segment 7 and pleon segments 1—4 

 tuberculately keeled. Side-plate 4 deeply 

 emarginate behind. Frontal process 

 (Fig. 67) arcuate, reaching middle of 

 2'i Joint of antenna 1, prismatic in cross 

 section, with a little boat-shaped rostral 

 apex, lateral corners of liead acute, 

 postero-anteunal rounded. In place of 

 eyes, frontal process fiUed with a bifid 

 mass of granulär bright red pigment. 

 Antenna 1 (Fig. 67) reaching little 

 beyond penultimate Joint of peduncle of 

 antenna 2; 1^*^ Joint as long as 2*^ and 3*^ 

 combined, flagellum 21-jointed, hirsute, 

 tapering. Antenna 2 (Fig. 67), ultimate 

 Joint of peduncle shorter than penulti- 

 mate, both stout, setulose, armed with 

 Flagellum long spines, flagellum shorter than pe- 

 duncle, tapering. of 65 joints, most with 

 calceoli, or peduncle without long 

 spines, flagellum longer than peduncle, 

 of 74 joints, without calceoli Upper lip 

 transversely oval, a little projecting 

 at centre. Mandible, cutting plates 

 distinctly denticulate. Maxiila 1, inner 

 plate with 8 plumose setae, 2*^ Joint 

 of palp with many spiuiform setae 

 about apex. Maxiila 2, inner margin 

 of inner plate entirely fringed with 

 setae. Gnathopods 1 and 2, 5*^^ Joint 

 shorter but broader than oval 6*'', considerably so in gnathopod 2, in which 

 the 6*^ Joint is little broader, but considerably longer than in gnathopod 1, 

 palm long, feebly defined. Peraeopods l — 4 setose, finger nearly as long as 

 6*^ Joint, with cap over the nail. Branchial vesicles in peraeopods 1 and 2 

 very large, lightly crumpled. Peraeopods 3 and 4, 4*'^ Joint as long as 2"^^ or 



Fig. 67. O. rostratus. 

 Rostrum and antenuae. 



