Iphimedia 217 



poiutiug, iu addition to the dorsal teeth above nientioned, segraent 3 with 

 postero-lateral corners vounded, 2'* and ii^ with small acute tooth. Eyes 

 round, prominent, with reddish tint in spirit. Antenna 1 the shorter, 1^* Joint 

 much longer and broader than 2^, .with blunt process and 2 or 3 distal teeth. 

 2'^ with rounded end overlapping the short 3*^, flagellum with over 30 unequal 

 joints. Antenna 2, penultiinate Joint of peduucle with rounded distal process 

 overlapping the naiTOwer and shorter ultimate, flagellum about 38-jointed. 

 Upper lip rather deeply and almost symmetrically bilobed. Lower lip, principal 

 lobes broad, inner almost obsolete, mandibular processes blunt. Mandible, 

 cuttiug edge angular with several unequal teeth, accessory plate similar to 

 primary on one mandible, on the other wanting or obsolete, spine-row and 

 molar wanting, 3*^ Joint of palp rather shorter than 2'^, broad-ended. Maxilla 1, 

 inner plate oval, with 8 or 9 setae along distal mal'gin, outer plate with 9 curved 

 rather slender spines, not much dentate, palp with long setose 2^ Joint. 

 Maxilla 2, inner plate with setae on distal part of inner margin. Maxillipeds, 

 inner plates large, prominent, inner and truncate distal margin closely set 

 with setae or slender spines, outer plates closely set with slender seta-like 

 spines round all distal half, the 3 joints of palp subequal in length, 1^* and 

 2'^ broad, 3»^ long oval. Gnathopod ], 2*^ Joint sinuous, narrowest distally, 

 3*^ longer than acute 4**^, 5*'^ naiTow, subequal to the slightly tapering 6*^ 

 of which the little chela-forming thumb is hard to distinguish from a spine; 

 the acute tip of the short finger bends on to its apex; tinger thick at base, 

 with a long setule on outer margin. Gnathopod 2 stouter, 2*^ Joint with 

 sinuous front but straight bind margin, 3*^ rather longer than 4*^, 5*^ slightly 

 longer than naiTowly oblong 6^^, which is distally produced to a blunt end, 

 forming a sort of chela with the closely applied, slender, not very obliquely 

 placed finger. Peraeopods 1 and 2, all the joints rather stout, not expanded, 

 almost bare. Peraeopods 3 — 5, 2*^ Joint expanded, bind margin produced 

 into 2 teeth widely apart, the lower one sti'ongly developed only in peraeo- 

 pod 5, hinder apex of 4*^ and 5*^ joints pretty strongly produced. Pleopods, 

 peduncles fringed on outer margin, rami long, 1*** Joint of inner with several 

 cleft spines. Üropod 1, rami slightly shorter than peduncle, outer ramus 

 slightly shorter than inner. Uropod 2 rauch shorter than uropod 1. outer 

 ramus much shorter than inner. Uropod 3, rami much longer than peduncle, 

 lanceolate, outer ramus little shorter than inner. Telson oblong oval, apical 

 border very faintly emarginate. L. 8 — 17 mm. 



South-Atlantic (Hermite Island [Tierra del Fuego], Stanley Harbour [Falkland 

 Islands]). 



I. normani R. O. Cunningh. 1871 I. n., R. O. Cunningham in: Tr. Liun. Soc. 

 London, v. 27 p. 498 t. 59 f. 7 | 1888 I. n., T. Stebbing in: Rep. Voy. Challenger, r. 29 

 p.405 I 1893 L 11., A. DellaValle in: F. Fl. Neapel, v.20 pr585. 



Head pi'oduced into a sharp-pointed rostrnm. Pleon segments 1 — 3 haviug a 

 sharp-pointed tooth on eacli lateral margin. Eyes subreniform. Antennae 1 and 2 

 of nearly equal length. Colour puiijlish. L. about 8 mm. 



„Elizabeth Island". 



I. Stimpsoni Bäte 1855 /. ohesa (non H. Rathke 1843!), Stimpson in: P. Ac. 

 Philad., v.l p. 393 | 1862 I. stimpsoni, Rate, Cat. Amphip. Brit. Mus., p. 374 | 1888 

 I.? s., T. Stebbing in: Rep. Voy. Challenger, r.29 p. 288 \ 1893 I.? s., A. Della Valle 

 in: F. Fl. Neapel, r. 20 p. 585. 



