Oediceroticlae, Perioculodes 237 



, I Antenna 1 longor than antenna 2 . . . 16. Gen. Monoculopsis . . . p. 257 

 \ Antenna 1 not longer than antenna 2 — 17. 



j önathopod 2 (Fig. 66), process of Sth joint 



17 l slender 17. Gen. Monoeulodes . . . p. 258 



l Gnathopod 2, process of 5tli Joint broad 18. Gen. Oediceroides . . . p. 267 



1. Gen. Perioculodes 0. Sars 



1892 Perioculodes {S]).un.: P.lonyimmms), G. O. Sars, Crust. Norwaj', v.l p.312| 

 1895 P., A. M. Norman in: Ann. nat. Hist., ser. 6 v. 15 p. 486. 



Side-plates moderately deep. Rosti'al projection short, deflexed. A Single 

 eye (Fig. 61) encircling front of head, lenses highly refractive. Antenna 1 in 9 

 rather longer than antenna 2, 1^*, 2^ and 3'^ joints 

 subequal, in ö (Fig. 61) 2^ shorter than 1«S 3^ than 2«^, 

 flagellum stronger than in 9 . Antenna 2 in d (Fig. 61), 

 flagellum long, filiform. Upper lip broadly truncate. 

 Lower lip, inner lobes coalesced. Mandible not strong, \ ^^^fick — 1" Joint 

 molar feeble, conical, tipped with 3 spinules, palp in Q 

 rather small, 3^ Joint short ; in d larger. Maxillae 1 and 2 J^hi'^" ^^ ^°^°* 

 nearly as in Monoeulodes (p. 258). Maxillipeds, inner 11 vT" flageUum 



plates small, outer nearly reaching apex of 2^ Joint of 

 palp, armed with spaced spines. Gnathopods 1 and 2, 

 process of 6^^ Joint very long, stiliform, adjacent to 

 and overtopping bind margin of the naiTOw 6**^ Joint, Fig. «i. 



which is long with short palm. Peraeopods 1 — 5 P-iongimanus.cJ. 

 and uropods 1—3 nearly as in Monoeulodes. Telson [After g. o. sars.] 

 oblong, apically rouuded. 



1 species accepted. 2 doubtful. 



1. P. longimanus (Bäte &Westw.) 1868 Monoeulodes l., Bäte & Westwood, 

 Brit. sess. Crust., v.2 p. 507 | 1892 Perioculodes l, G. 0. Sars. Crust. Norway, vA p. 313 

 t. 110 f. 2; t. 111 f. 1 i 1895 P. l, A. M. Norman in: Ann. nat. Hist., ser. 6 v. 15 p.486 | 

 1893 Oedicerosl. (part.), A. Della Valle in: F. Fl. Neapel, v. 20 p. .547 t. 4 f. 9; t. 33 

 f. 32 — 36 j 1871 Monoeulodes grubei, A. Boeek in: Forh. Selsk. Christian., 1870 p. 165 | 

 1888 M. aeqimnanus (err., non Oedicerus a. Kossmann 1880!), (A. M. Norman in MS.) 

 D. Robertson in: P. nat. Hist. Soc. Glasgow, n. ser. v.2 p. 30. 



Head, rostral projection short, broad, triangulär, lateral corners rounded. 

 Side-plate 1 rather expanded and obliquely truncate, 2'^ and 3'^ oblong, with small 

 tooth at lower bind corner, 4*'^ very large, lower bind coruer a little produced, 

 obtuse, ö*'^ broader, less deep. Eyes broadest at top, bright scarlet with about 

 12 brilliantly iridescent lenses on each side. Antenna 1 in 9 , flagellum little over 

 half length of peduncle, with 6 joints, in ä flagellum as long as peduncle, 1^* Joint 

 very large, densely clothed (the sensory hairs not shown in Fig. 61). Antenna 2 in 

 Q , ultimate and penultimate joints of peduncle subequal, together as long as 

 flagellum. Antenna 2 in d twice as long as in o . Gnathopod 1, process of 5**^ Joint 

 rather flexuous, nearly reaching end of 6*^', which is about thrice as long as broad, 

 palm nearly as long as bind margin. Gnathopod 2, process of o^^ Joint 

 exteuding much beyond 6*'' Joint, which is 4 times (Sars) or about 5 times 

 (Norman) as long as broad, palm much shorter than bind margin. Peraeo- 

 pods 1 — 4 moderately slender, densely setose, in 1^* and 2^ finger narrowly 

 acuminate, not half length of broad 6*^ Joint, in 3^ and 4*^ lanceolate, compressed. 

 Peraeopod 5, 2*^ Joint quadrangular oval, 5*'' and &^^ subequal, each longer 



