Cumacea: 9. Leuconidae, 2. Eudorella 79 



denticles and sinus wanting in d even when young, adult not known. An- 

 tenna 1. 2'^'^ joint considerably longer than l^*- or 3*^, accessory not so long 

 as 1^*- joint of principal tiagellum in 9 , but longer than P* in the 4-jointed 

 flagellum of d. Peraeopod 1, &^^ joint scarcely longer than 5*'^. Peraeopod 2, 

 terminal joint less than half the antepenultimate. Peduncle of uropods rather 

 shorter than exopod, which is longer than 1^* joint of endopod; endopod's 

 a"*^ joint more than a third as long as the 1^*, with 3 spines on its medial 

 margin and a quite distinct apical spine. Colour whitish. L. 5 mm. 



Coast of Norway, depths 282 — 377 m; between Ireland and Rockall, 2524 m 

 (Norman). 



7. E. hispida 0. Sars 1871 E. h., G. 0. Sars in: Of v. Ak. Forh., i'. 28 nr. 1 

 p. 80 I 1871 E. h., G. 0. Sars in: Svenska Ak. Handl., u. ser. v.9 nr. 13 p. 49 t. 18 

 f. 95— 97 I 1873 E. h., S. I. Smith in: A. E. Verrill in: Rep. U. S. Fish. Comm., i'. 1 

 p. 555 1 1879 E. h., S. I. Smith in: Tr. Connect. Ac, v.5i p. 115 | 1900 E. h., Zimmer 

 in: Fauna arctica, v.l p. 419, 433 tf., 440 | 1905 E. /i.. Caiman in: Sci. Invest. Fish. 

 Ireland, 1904 app. 1 p. 21. 



Near to E. emarginata (nr. 1). Body very narrow and elongate. Pseudo- 

 rostral lobes clothed in upper part with forward curving setae, the smoothly 

 truncate front ending in a tridentate prominence, upper boundary of the 

 sinus, within which are 2 downward pointing teeth (but this outline variable 

 Caiman), the lower boundary being formed by a sharp tooth strongly pro- 

 duced forwards and followed by considerable serration of the lower margin. 

 Fifth pleon segment much the longest, not carrying long backward directed 

 setae, but like all the rest of the integument closely beset with short hairs. 

 Antenna 1, 3 "^ joint subequal in length to the 2'"', flagellum of 9 figured as 

 3-jointed; with 1^* joint longer than the 1-jointed accessory. Peraeopod 1, 

 6*'! joint very little longer than 5^^. Peraeopod 2, antepenultimate joint 

 (true 5*^) nearly double as long as the next preceding joint, the 3'^ joint 

 being lost or fused; in young male antepenultimate joint once and a half 

 as long as preceding joint (Caiman). Peduncle of uropod stout, as long as 

 the exopod which is very little shorter than the endopod; of the latter the 

 second joint is less than a quarter the length of the 1^*^ joint, or with inclusion 

 of the coalesced terminal spine it is half the length of the 1^*: spines on 

 medial margin of peduncle 8, 1^* joint of endopod 12, 2 'i*! joint 3; there are 

 numerous setae on both rami. L. 9 juv. 5-5 mm, d' juv. 5 mm. 



Atlantic coast of N. America, off Nova Scotia, depth 126 m; Bay of Fundy, 

 etc., 2— 99 m; W. of Ireland, 366 and 585 m. 



8. E. gracilis 0. Sars 1871 E. g., G. O. Sars in: Ofv. Ak. Forh., «•. 28 nr. 6 

 p.800| 1873 ^.^f., G. 0. Sars in: Svenska Ak. Handl., n. ser. ?;.llnr.6p.8 1.3 f.ll — 13 

 1900 E. g., Zimmer in: Fauna arctica. v.l p. 419, 433 tf., 440. 



Body very slender and elongate. Pseudorostral lobes on rounded upper 

 front margin carrying hairs of moderate length, otherwise smoothly truncate 

 down to quadridentate upper boundary of the sinus, within which is a bidentate 

 prominence, the lower boimdary being a small horizontal antero-lateral tooth 

 followed by slight serration of" the lower margin. Pleon hairy, but the long 

 o^h segment not projecting long setae over the telsonic segment, which is 

 well produced conically, with rounded apex, between bases of uropods. Antenna 1 , 

 'i'^ joint little over half length of 2"^, flagellum 3-jointed, accessory as long 

 as l«t joint of principal. Peraeopod 2 rather large, 3^^ joint wanting or fused, 

 b^'°- considerably longer than the next preceding, terminal oval or broadly 



