82 Cumacea: 9. Leuconidae, 2. Eudorella, 3. Eudorellopsis 



Extremely like E. fallax (nr. 3), but the carapace slightly more slender,. 

 the pseudorostral lobes meeting very far to the rear, the respiratory opening 

 at the top surrounded by long setae, the sinus in front not quadrate but 

 occupied by a prominence giving a sinuous outline bounded below by an 

 antero-lateral tooth, variable yet decidedly larger than in the other species, 

 the same superiority attaching to this tooth also in the male; setae on the 5*^ 

 pleon segment either wanting or not nearly as long as the telsonic segment; 

 antenna 1, with accessory flagellum only about as long as the 1^* joint of 

 the principal. L. about 7 mm. 



S. Georgia, depths from 12—250 m. 



3. Gen. Eudorellopsis 0. Sars 



1883 Eudorellopsis, G. 0. Sars in: Forh. Selsk. Christian., 1882 nr. 18 p. 12, 56 |' 

 1900 E., G. 0. Sars in: Crust. Norway, v.^ p. 39 | 1900 E., Zimmer in: Fauna arctica,. 

 f. 1 p. 431. 



Near to Eudorella. but body short and compact, pleon relatively short. 

 First antenna geniculate between the first and second joints. Uropods with 

 the exopod longer than the endopod. 



4 species. 



Synopsis of species: 



f Pseudorostrum with upturned process behind branchial orifice 1. E. deformis. 

 \ Pseudorostrum with upturned process frontal — 2. 



Sides of carapace smooth 2. E. Integra 



Sides of carapace not smooth — 3. 



) Carapace with longitudinal ridge on each side 3. E. resima 



i Carapace with 2 oblique curved ridges on each side 4. E. bipUcata 



1. E. deformis (Kroyer) 1846 Lexicon d., Kroyer in: Naturh. Tidsskr., ser. 2 

 v.2u p. 194, 209 t. 2 f. 4 | 1849 L. d., (Petersen del.) Kroyer in: Voy. Xord, Crust, 

 t. 5a f. 3a— h | 1865 Eudora d., G. 0. Sars in: Forh. Selsk. Christian., 1864 p. 60 t 1871 

 Eudorella (?) d., G. 0. Sars in: Svenska Ak. Handl., n. ser. v.9 nr. 13 p. 44, .^0 t. 19 

 f. 101—103. t.20 f.l04— 118 1 1877 E. d., 3Ieinert in: Naturh. Tidsskr., ser.3 vAl p.l84 | 

 1883 Eudorellopsis d., G. 0. Sars in: Forh. Selsk. Christian., 1882 nr. 18 p. 12, 56 | 1886 

 E. d., G. O. Sars in: Norske Nordhavs-Exp.. «. 6 nr. 15 p. 20 | 1887 E. d., H. J. Hansen 

 in: Vid. Meddel., ij.39 p. 200 | 1897 E. d., Ehrenbaum in: Wiss. Meeresunters., u2l 

 p. 413 1 1900 E. d., G. 0. Sars in: Crust. Norway, v.3 p. 40 t.31,32 | 1900 E. d., Zimmer 

 in: Fauna arctica, v.l p. 420, 433, 440 | 1905 E. d.. Caiman in: Sci. Invest. Fish. Ireland, 

 1904 app. 1 p. 22 I 1909 E. d., A. M. Norman & G. S. Brady in: Nat. Hist. Tr. Northumb., 

 ser. 2 v.Sn p. 29 | 1912 E. d., Caiman in: P. U. S. Mus., v.U p. 623. 



Pseudorostral lobes with sharp process erected to the rear of the dorsal 

 branchial orifice, front steeply truncate and fringed throughout in Q but less, 

 completely in 6 with broad lamellar teeth, antero-lateral corners triangularly 

 produced in 5 , smooth above, with serrate lower margin. Pleon segments 1—5- 

 with ventral setae. Telsonic segment with 2 setae and 2 setules (figured) 

 on hind margin. Antenna 1, 3'^ joint shorter than 1^*, longer than 2°*^, flagellum 

 3-jointed. accessory 1-jointed, about half as long as 1«* joint of principal. 

 Peraeopod 1, b^^ and 6^*^ joints subequal, 7*^ shorter and very narrow. Peraeo- 

 pod 2, terminal joint at least as long as antepenultimate, with 5 apical 



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