EUPHAUSIA LAMELLIGERA. 251 
P Surface. 1 speci 5 
Sta. 4650. Nov. 10, 1904. Lat. 5° 22’S., long. 84° 39’ W. \ SUbEee: Tages 
( 300 fms. to surface. 3 specimens. 
Surface. 2 specimens. 
Sta. 4652. Nov. 11, 1904. Lat. 5° 44.7’S., long. 82° 39.5’ W. | RD Es a) GUL eee Suu 
200 fms. to surface. 23 specimens. 
400 fms. to surface. 15 specimens. 
: eA! ocarvy § Surface. 2 specimens. 
Sta. 4655. Nov. 12, 1904. Lat. 5°57.5’S., long. 80° 50’ W. j|Siniers: Aigo 
( 400 fms. to surface. 4 specimens. 
_ Surface. 22 speci Ss. 
Sta. 4657. Nov. 12, 1904. Lat. 7° 12.5’S., long. 84° 9’ W. )psuntace pee ease a 
( 300 fms. to surface. 1 specimen. 
Sta. 4659. Nov. 14,1904. Lat. 8° 54.5’S., long. 86° 5.5’W. 300 fms. tosurface. 4specimens. 
Sta. 4661. Noy. 15, 1904. Lat. 10° 17’S., long. 88° 2’ W. Surface. 1 specimen. 
Description Body slender— The frontal plate (fig. 4a) is very short, 
but 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, and consequently no rostrum is developed. The gastric area is 
highly vaulted and, seen from the side, with the upper margin angular (fig. 4b), 
but a real keel is not developed. 
The eyes are large-—The antennular peduncles are somewhat robust; 
the basal joint is much raised above towards the terminal margin (fig. 4c), which 
is situated much above the base of second joint and produced in a moderately 
small lobe projecting upwards, forwards, and outwards (fig. 4d); the end of the 
lobe is more or less distinctly cleft. Second joint at the end furnished with a 
very large, movable lamella which, seen from above (fig. 4d, I.), is subtriangular, 
reaching almost to the inner margin, and covering the outer proximal half or 
still more of the upper surface of the third joint; while seen from the side (fig. 4c) 
its lower margin runs almost along the middle of the side of the third joint, so 
that the proximal upper fourth or still more of the whole outer surface of the 
joint is covered; in immature specimens this lamella is smaller and in about 
half-grown individuals quite small. The third joint, seen from the outer side 
(fig. 4c) with the dorsal keel high, occupying the distal half of the joint, with the 
front margin long and a little oblique, the angle between this margin and the 
upper margin being about 100°— The antennae nearly as in EF. distinguenda. 
Third abdominal segment with a dorsal, slender, spiniform, compressed 
process a little or scarcely more than one third as long as the next segment; 
fourth and fifth segments without any vestige of dorsal denticles. Sixth seg- 
ment long, even a little more than twice as long as deep.— Exopod of uropods 
a little longer than the endopod and conspicuously shorter than the telson. 
The copulatory organs (Plate 8, fig. 4e; Plate 9, fig. la) show some simi- 
larity to those of E. distinguenda, but there are several differences. The termi- 
nal process has a rather long foot, but its heel is somewhat short and curved, 
