Harpinia. Pontharpinia 145 



9 . Body robust. Hood moderately promiueut. Side-plates, setae numerous; 

 1®* much expauded distally, 5*^^ with deep transverse bind lobe. Pleon 

 Segment 3, postero-lateral angles rounded, lower edge setose; segmeuts 1 — 3 

 very finely hirsute; segment 4 with dorsal hump iu botb sexes. Antenna 1, 

 1^* Joint twice as long as 2^^ and 3*^ combined, flagellum short, 7-jointed, 

 accessory flagellum 6-jointed. Antenna 2 scarcely as long as antenna 1, 

 flagellum 6-jointed. Penultiraate Joint of peduncle in botb anteunae 1 and 2 witb 

 dense set of plumose setae. Gnatbopods 1 and 2 not very unequal, palm very 

 oblique, mucb longer tban bind margin of 6^^ Joint, palmar tootb almost 

 obsolete. Peraeopod 4 more tban balf lengtb of body, 6*^ Joint long and 

 slender. Peraeopod 5 very small, front margin angled, setose below, bind 

 margin broadly rounded. little produced dowuward, finely crenulate below. 

 üropod 3 not very large, 1**^ Joint of outer ramus witb 6 spines on outer 

 margin, 2^ Joint very small, inner mucb sborter tban 1*** Joint of outer. 

 Telson sbort, broader tban long, apices divergent. Colour greyisb wbite to 

 rusty yellow. — (S. More slender and compressed, pleon carinate, 6*^ segment 

 dorsally bumped as well as 4**". Antenna 1, tbe expanded 1^* Joint of 

 flagellum densely setose. Peraeopod 5, 2*^ Joint, front margin almost straigbt, 

 bind margin nearly smootb. üropod 3, rami ratber broad. outer witb 6 setules, 

 2*^ Joint minute, inner ramus nearly as long as outer. — L. o & c5 12 mm. 



North-Atlantic (lat. 63«>— 75"^ N.). Depth 660—2288 m. 



12. H. laevis O. Sars 1891 H. l. G. O. Sars, Criist. Xorway, v. 1 p. 161 t. 56 

 f. 2 j 1893 H. l, A. DellaValle in: F. FI. Neapel, r. 20 p. 745. 



9 . Body stout, giabrous. Hood very prominent. Side-plates, setae 

 very few (3). Pleon segment 3, postero-lateral angles narrowly rounded, 

 lower margin quite smootb. Antennae 1 and 2 uuusually slender, witb few 

 setae onpenultimate Joint of peduncle, antenna 1, flagellum 6-jointed, accessory 

 flagellum 5-jointed. Antenna 2, flagellum 5-jointed. Gnatbopods 1 and 2, palm 

 ratber oblique, subequal to bind margiu of Q^^ Joint, palmar tootb pretty 

 strong. Gnatbopod 2 more robust tban gnatbopod 1. Peraeopod 4 less 

 tban balf lengtb of body. Peraeopod 5, 2*^ Joint large, fully overlapping 

 4"^ Joint, bind margin feebly crenulate. üropod 3, 1^*^ Joint of outer ramus 

 witb 1 spine on outer margin, 2^ Joint more tban balf as long, inner ramus 

 longer tban 1^* Joint of outer. Telson longer tban broad, apices narrowly 

 rounded. Colour greyisb wbite, pellucid. L. 4 mm. — ä undescribed. 



Hardangerfjord and Trondhjerusfjord. Depth 94 — 188 m. 



6. Gen. Pontharpinia Stebb. 



1853 Urotlioe (part.), J.D.Dana iu: U. S. expl. Exp., v.l'An p.920 | 1888 Plwxo- 

 cephaliis (lyart.), T. Stebbing in: Rep. Voy. Challenger, ■i;.29 p. 1717 | 1897 Ponthm-pinia 

 (Sp. nn. : P. pinguis), T. Stebbing in: Tr. Linn. Soc. LondoHj, ser. 2 ü. 7 p. 32. 



Back broad. Hood obtuse. Eyes distinct. Antenna 1, 3*^ Joint sbort, 

 accessory flagellum many-jointed. Antenna 2, penultimate Joint of peduncle long, 

 broad, carrying setae and spines. Mandible, molar small or obsolete, palp 

 long and slender, S^ Joint sborter tban 2'^. Maxilla 1, palp 2-jointed. 

 Maxillipeds, outer plates sbort, 4*^ Joint of palp long and slender. Gnatbo- 

 pods 1 and 2 similar. Peraeopods I and 2, 4*^ Joint longer tban 5*^ or 6*^. 

 Peraeopods 3 and 4 witb 2*, 4*^^ and 5*^ joints expanded. Peraeopod 5, 

 expanded 2^ Joint greatly produced. üropod 3, rami lanceolate. Telson 

 deeply cleft. 



2 accepted species, 2 uncertain. 



Das Tierreich. 21. Lief. : T. R. R. Stebbing, Amphipoda I. 10 



