706 Podocerus, Icilius 



truncate in front (Fig. 122 p. 705). Eyes verj prominent. Autenna 1, flagellum 

 with 8 — 10 joints carrying many hyaline filaments, together longer than 2^ Joint 

 of peduncle; accessory flagellum 1-jointed. "Antenna 2, ultimate Joint of 

 peduncle very long; flagellum slender, with 4 joints, the 1^* much longer 

 than the other 3 united, all 4 together subequal to penultimate Joint of peduncle. 

 Guathopod 1 slight, 5*^ Joint fully as long as 6*^ general structure as in 

 P. brasiliensis (p. 704). Gnathopod 2 in d, 4*^ Joint slightly but bluntly 

 produced, 5*^ distinct, triangulär, short, 6*^ thrice as long as B^^, or as its 

 own breadth, with no distinction between bind margin and palm, the two 

 closely fringed with nither long plumose setae, and broken iuto 2 or 3 teeth 

 near the hinge of the setuliferous finger, which is about half as long as 

 6^^ Joint, curved and stout. Gnathopod 2 in 9 , 4*^ Joint little and not 

 acutely produced, 6*** broadly oval, palm defined from the short bind margin 

 by an acute tooth and strong palmar spine, against which the broad curved 

 finger impinges. Peraeopods 1 — 5 nearly as in P. brasiliensis, but the finger 

 fringed with a few setules on the convex margin. Pleopods 1—3 each with 

 2 coupling spines. Uropod 3, the concave plate bordered with 6 or 7 spinules. 

 Telson with bluntly conical projection fi'om its upper surface not quite reaching 

 its distal margin; apex of the cone tipped with 2 spines. L. about 14 mm. 



Southern Indian Ocean (Kerguelen Island). Depth 232 m. 



10. P. eristatus (G. M. Thoms.) 1879 Cyrtophium cristatum, Gr. M. Thomson 

 in: Ann. nat. Hist, ser. b vA p. 331 t. 16 f. 9— 15 | 1881 C. c, G. M. Thomson in: Tr. 

 N. Zealand Inst., ?;. 13 p. 219 t. 8 f. 8 | 1888 Platophium c, T. Stebbing in: Rep.Voy. 

 Challenger, p.29 p.500 | 1899 Podocerus eristatus, T. Stebbing in: Ann. nat. Hist., ser. 7 

 f. 3 p.239 I 1879 Cyrtophium dentatum, Haswell in: P. Linn. Soc. N.S.Wales, vA p. 342 

 t. 22 f. 5 I 1885 Dexiacerella dentata, Haswell in: P. Linn. Soc. N. S.Wales, v. 10 p. 109 1. 17 

 f. 8— 12 I 1893 Platophium Orientale {purt), A. DellaValle in: F. PI. Neapel, v.20 p.332 



In close general resemblance to P. variegatus and P. brasiliensis (p. 703, 

 704). Peraeon segments 6 and 7 and pleon segments 1 and 2 each with carinate 

 process in medio-dorsal line. Antenna 1, flagellum 6 — 8-jointed, accessory 

 flagellum 1-jointed (Haswell 1879: biarticulate, and 1885: consisting of several 

 coalescent joints). Antenna 2, flagellum with 3 joints, the last tipped with 

 a sti'ong spine. Gnathopod 2 in (5", 4*^ Joint with apex of bind margin 

 acutely produced, 6*'^ having near the finger-hinge a denticulate lobe followed 

 by a conical tooth, which like the lobe is of variable size ; finger nearly reaching base 

 of 6*'^ Joint. Peraeopods 3 — 5 with 2*^ Joint slightly broader than in the 

 other species. Pleopods 1 — 3 each with 2 coupling spines. Telson conical, tipped 

 at the apex with 2 spinules in juxtaposition. Colour grey or red. L. 5 — 6 mm. 



Southern Indian Ocean and South-Pacific (Dunedin Harbour [New Zealand], 

 depth 7 — 9 m; eastern and southern Australia). 



6. Gen. Icilius Dana 



1849 Icilius, J. D. Dana in: Amer. J. Sei., ser. 2 v.S p. 140 | 1852 I. (Sp. un.: 

 I. ovalis), J. D. Dana in: P. Amer. Ac, v.2 p. 220 | 1886 /., Gerstaecker in: Bronn's 

 Kl. Ordn., v.bn p. 497 | 1888 L, T. Stebbing in: Rep. Voy. Challenger, u29 p. 1202 | 

 1893 I., A. DellaValle in: F. Fl. Neapel, v.20 p. 327, 344. 



Body (Fig. 123) deprcssed, wide at the middle; pleon segments 3 — 6 

 folded ventrally. Head with lateral lobes very prominent. Side-plates of 

 various shapes, 1^' and 2*^ the smallest, 4^^ and 0*'^ the largest, none very 

 deep. Antenna 1 much the shorter; accessory flagellum very small. An- 

 tenna 2, peduncle and flagellum elongate. Upper lip faintly emarginate. 



