704 Podocerus 



ultimate Joint of peduncle very elongate; flagellura with 4 joints, the 1^* much 

 the loDgest. Giiathopod 1 as in P. brasiliensis, but in both sexes less' robust. 

 Gnathopod 2 in d, 6^^ Joint with the front margin more convex than in 

 P. brasiliensis, and the opposite margin armed near the finger-hinge with a 

 broad denticulate process, followed by a strong tooth; the plumose setae as 

 in the species compared; finger reaching nearly to the base of the 6*^ Joint. 

 Gnathopod 2 in 9 , 4*^ Joint with a broader apex, 6*^^ rather less broad, 

 finger longer than in P. brasiliensis. Pleopods with 5 coupling spines. Colour 

 dark red, not rarely with a brilliant patch of purple or lilac on the back. 

 L. 3 — 4 mm. 



North- Atlantic (South- West-England, West-France); Mediterranean (Naples, 

 Adriatic). 



7. P. brasiliensis (Dana) 1853 & 55 Platophium brasiliense, J. D. Dana in: 

 U. S. expl. Exp., t;. 13ii p. 838; t. 55 f. 9a— 1 | 1888 F. h., T. Stebbing in: ßep. Voy. 

 Challenger, r.29 p.265 j 1893 P, h. (part.), A. Della Valle in: P. M. Neapel, v.20 p.329 | 

 1899 Fodocerus brasiliensis, T. Stebbing in: Ann. nat. Bist., ser. 7 v.3 p. 239. 



Body not carinate, in ö narrowly, in 9 more broadly, elliptical. 

 Anteuna 1, flagellum with 4 (Dana: 3 — 5) joints, together about as long as 

 2"^ Joint of peduncle. Antenna 2, ultimate Joint of peduncle very long; 

 flagellura with 4 joints, each with curved spine at apex, 4*^ Joint very small, 

 its curved spine the strongest. Gnathopod 1 sti'onger in d than in 9 ; 5**^ Joint 

 shorter than 6*'^ in d, not in 9 , in each forming a broad lobe at middle 

 of bind margin, 6*^ with veiy short bind margin, abruptly widening to the 

 long sloping palm; 4*^ — 6*^ joints armed with numerous spines on and 

 about the bind margin, 6^^ with several rows on surface adjoining front; 

 finger matching palm, cuiTed, serrate. Gnathopod 2 in (5, 4*^ Joint scarcely 

 at all produced at distal bind corner, 5^^ small, scarcely distinct from 6*-^ 

 (^th ygj.y iQjjg (j^qi Short), naiTowly oblong oval, fringed along the straight 

 hinder edge, which is palm and bind margin all in one, with veiy long 

 plumose hairs; the crenulation near the finger-hinge almost obsolete; finger 

 more than half as long as 6*^ Joint. Gnathopod 2 in 9 , 4^^ Joint considerably 

 produced at the hinder apex, 5^^ small, triangulär, but quite distinct, 6*^^^ not 

 very long, broadly oval, the palm defined from the short bind margin by 

 2 slender prominent spines, the Joint armed with numerous seta-like spines 

 but no plumose setae. Peraeopods 1—5, 6^^ Joint spinöse on both raargins, 

 on the front the strong spines being on the lower half; finger curved, strong. 

 Peraeopods 3 — 5, 2d Joint narrow, and narrowing distally. Pleopods 1 — 3 

 with only 2 coupling spines. üropod 3, ramus very small. Telson with 

 8 spines radiating round the projecting distal margin. L. 6 mm. 



Tropical Atlantic (Rio Janeiro, Antigua). 



8. P. laevis (Hasw.) 1885 Dexiocerella l, Haswell in: P. Linn. Soc. N. S. Wales, 

 ».10 p.lll t.l8 f. 10— 12] 1888 Platophium laeve, T. Stebbing in: Rep. Voy. Challenger, 

 V.29 p. 1184 I 1899 Podocerus laevis, T. Stebbing in: Ann. nat. Bist., ser. 7 v.'S p. 239 j 

 1888 Cyrtophium haswelli, Chevreux & Guerne in: C.-R. Ac. Sei., t?. 106 p. 627 | 1893 

 Platophium parasiticum (part.), A. Della Valle in : F. Fl. Neapel, v. 20 p. 335. 



Body smooth, elliptical in 9 . Antenna 1, 3*^ Joint of peduncle veiy 

 little shorter than 2*^; flagellum 5- or 6-jointed; accessory flagellum very 

 small, 1-jointed. Antenna 2 nearly as long as body in d, in 9 much 

 shorter; peduncle very stout, ultimate Joint as long as 2 preceding joints 

 together (in d, not so long in 9); flagellum '% as long as ultimate Joint of 

 peduncle, with 3 indistinct joints (Haswell), in 9 more than half as long as 



