Cumacea: 9. Leuconidae, 2. Eudorella 75 



Uropods with 1st joint of endopod more than thrice as 



j long as 2nd 2. E. graeilior 



) Uropods with 1st joint of endopod little over twice as 



1 long as 2iid 3. E. fallax 



- Fifth pleon segment with postero-dorsal group of long 

 ) setae — 5. 



\ Fifth pleon segment without postero-dorsal group of long 

 > setae — 6. 



Uropods with 2iid joint of endopod one-third of 1st, apical 



I spine fused 4. E. nana 



') Uropod with 2iid joint of endopod one-fourth of 1 st, apical 



I spine distinct 5. E. monodon 



( Anterior margin of pseudorostral lobes beset with forward 



6 { pointing setae — 7. 



I Anterior margin of pseudorostral lobes not so beset — 9. 

 Anterior margin of pseudorostral lobes in 9 denticulate 

 j throughout 6. E. hirsuta 



' ) Anterior margin of pseudorostral lobes not denticulate 

 ' throughout — 8. 



, Uropods with 2iid joint of endopod not one-fourth of 1st, 



) apical spine fused 7. E. hispida 



\ Uropods with 2tid joint of endopod one-third of 1st, apical 



' spine distinct 8. E. gracilis 



I Pseudorostral lobes in 9 with tuft of long setae on upper 



9 I margin 9. E. splendida 



I Pseudorostral lobes without tuft of setae on upper margin — 10. 

 ) Uropods with apical spine of endopod fused to 2nd joint — n. 

 \ Uropods with apical spine of endopod distinct — 12. 



J Pleon clothed with short hairs 10. E. truncattila 



i Pleon hairless 11. E. pusilla 



I Projection within frontal sinus dentate 12. E. abyssi 



i Projection within frontal sinus smooth 13. E. sordida 



1. E. emarginata (Kroyer) 1846 Leucon emargitiatus, Kroyer in: Naturh. 

 Tidsskr., ser. 2 v.2 p. 181, 209, 211 t. 2 f. 3a— h | 1849 i.e., Kroyer (Petersen deh) in: 

 Voy. Xord, Crust, t. 5a f. 2a— s | 1852 L. e., W. Liljeborg in: Ofv. Ak. Forh., v.9 

 p. 6 I 1863 Cyrianassa cillata, A. M. Norman in: Tr. Tyneside . 



Club, r. 5iv p. 273 1. 13 f. 4— 9 ((5) | 1865 Eudora emarginata, r ^^^' /''''^x'-% 



a. 0. Sars in: Forh. Selsk. Christian., 1864 p. 185 | 1867 Eudo- / !^t M 



rdla e., A. M. Norman in: Rep. Brit. Ass., u 36 p. 194, 197 | / ^.>-^AiLp4%\ 



1871 E. e., G. 0. Sars in: Svenska Ak. Handl., n. ser. v. 9 nr. 13 [ '' ' •$!' 

 p. 50 t, 18 f.98 I 1877 E. e., Meinert in: Naturh. Tidsskr., ser. 3 R ' '^| 



V. 11 p. 181 I 1879 E. e., S. I. Smith in: Tr. Connect. Ac, v. 5 

 p. 115 I 1887 E. e., H. J. Hansen in: Vid. Meddel., u39 p. 200 | ^ 

 1889 E. marg'mata, D. Robertson in : P. nat. Hist. Soc. Glasgow, ^ 



m 



ser. 2 r. 3 1 Tr. p. 47 | 1894 E. emarginata, A. M. iiorm&n in: V. ____.^ --. 



Ann. nat. Hist., ser. 6 v. 13 p. 275 | 1900 E. e., G. 0. Sars, pj^ 33 



Crust. Norway, v. 3 p. 36 t. 27, 28 | 1900 E. e., Zimmer in: e. emarginata (Kroyer), 



Fauna arctica, v. 1 p. 418, 433 ff. in text | 1901 E. e., Ohlin in: carapace (after Sars). 



Bih, Svenska Ak., v. 26 nr. 12 p. 43 | 1905 E. e., Caiman in: 



Sci. Invest. Fish. Ireland, 1904 app. 1 p. 21 | 1909 E. c, A. M. Norman & G. S. Brady 



in: Nat. Hist. Tr. Northumb.. ser. 2 t;.3ii p. 28 | 1911 E. c, Stappers in: Camp. arct. 



Orleans, Crust. Malac. p. 108 i 1912 E. e., Caiman in: P. U. S. Mus., «.41 p. 620. 



Body slender, elongate, finely hairy all over. Truncate front fringed 

 with short hairs, smooth except for a short serrate space reaching the semilunar 



