Plate 1 issued from : O. Tanaka & M. Omori in Publs Seto Mar. Biol. Lab., 1974, XXI (3/4). [p.256, Fig.29]. Female (from Izu region): a, forehead (lateral); b, idem (dorsal, rostrum underneath); c, last thoracic segment and urosome (lateral left side); d, idem (dorsal); e, genital segment (ventral); f, A2; g, Md; h, Mx1; i, Mx2; j, Mxp; k, P1; l, P2; m, P5. Nota: The urosome segments and furca are in the proportional lengths as 51:17:14:18 = 100. Prosome and urosome are in the proportional lengths as 79:21. A1 extends beyondthe end of the furca by 3 segments.
Plate 2 issued from : O. Tanaka & M. Omori in Publs Seto Mar. Biol. Lab., 1974, XXI (3/4). [p.200, Fig.3,c]. Female (from Izu region): c, mandibular teeth.
Plate 3 Issued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.528, Figs.277-288]. Female: 277, habitus (dorsal); 278, idem (lateral left side); 279, urosome (ventral); 280, forehead (ventral); 281, A2; 282, Md (mandibular blade); 283, Md (mandibular palp); 284, Mx1; 285, Mx2; 286, Mxp; 287, P1 (anterior); 288, P5 (anterior). Nota: Exopod of A2 8-segmented, proximal seven segments each with a small seta. Mx1 with 1 seta on 3rd inner lobe , 3 setae on basis, 6 setae on exopod, 6 setae on outer lobe.
Mesopelagic. Known to occur at a depth less than 1500 m (Matthews, 1972). For Park (1970, p.529) this species is related to E. longiseta Grice & Hülsemann (1965), but can be distinguished from it by the smaller body, relatively long genital segment, and relatively short A1. Tanaka & Omori (1974, p.257) doubt imputation of their specimen to this species.
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