— 32 — 



thin-skinned finger distally curved inwards. — Length 

 i i-i5 mm . 



Tropical and subtropical Pacific South of the line. 



E. distinguenda n. sp. — The body is slender, the eyes 

 rather small, and the species is on the whole somewhat 

 similar to E . pseudogibba, E. paragibba, etc., but is distin- 

 guished by several characters, among which some are of 

 special importance. The first antennular joint is distally 

 somewhat raised with the terminal upper margin a little 

 convex, but without any protruding lobe or process ; the 

 second joint has the distal upper and outer angle raised as 

 a rather short, oblique keel forming a nearly ear-like, 

 rounded process directed upwards and somewhat for- 

 wards ; third joint, seen from the side, with the dorsal 

 keel high, but occupying only the distal half of the upper 

 margin. The copulatory organs with their processes 

 shaped in the main as in E. Sibogœ (6*, Pl. xiv, Fig. 7 d ), 

 thus very different from those in E. pseudogibba, etc. 

 Furthermore the frontal plate is moderately short with a 

 small or nearly rudimentary, badly defined, acute rostrum. 

 The dorsal process on third abdominal segment compres- 

 sed, spiniform, one-third to nearly half as long as the next 

 segment. — Length io-i4.5 mm . 



Tropical East Pacific, where it is common (Agassiz 

 Exp.). 



E. lamelligera n. sp. — The frontal plate is very short, 

 laterally somewhat produced with right angles, while the 

 long front margin is almost transverse, being only feebly 

 produced at the middle with an extremely obtuse angle. 

 Eyes large. Lobe from first antennular joint moderately 

 short, directed upwards, forwards and somewhat out- 

 wards, and with the end more or less distinctly cleft. 

 Second antennular joint at the upper outer distal angle 

 with a very large, movable, curved lamella covering 

 nearly half of the upper surface of the third joint and a 

 good portion of its outer surface ; third joint, seen from 

 the outer side, with the dorsal keel high and occupying 



