250 THE SCHIZOPODA. 
expansion decreases gradually to somewhat before the end; the terminal part is 
curved inwards and tapers to the acute end. The median lobe is normal, termi- 
nating in a somewhat flattened, rounded lobe; the lateral process (fig. 3e) 
is rather robust at the base; considerably beyond the middle it is bent very 
strongly, both inwards and considerably in the proximal direction, and at the 
bending it has a very conspicuous, curved, acute dorsal (or outer) tooth and 
sometimes still a smaller tooth or two small teeth (fig. 3f, p*.). The auxiliary 
lobe is long. The setiferous lobe is broad, with five setae from the triangularly 
produced terminal part and about four setae distributed along the outer margin. 
Length of both sexes 10-14.5 mm. 
Type.— A male from Sta. 4665; 300 fms. to surface. 
Remarks.— E. distinguenda resembles E. paragibba and allied species by 
its slender body and rather small eyes, but it is easily distinguished by having 
no protruding, acute lobe from first antennular joint, by the somewhat ear-like 
keel at the outer angle of the second joint, and by the copulatory organs; the 
reduced rostrum, the high keel on the third antennular joint, and the dorsal 
process on third abdominal segment being compressed afford other valid but 
less conspicuous characters. 
Distribution.— The long list of localities shows that this species is common 
in a large part of the area explored, viz. from Lat. 223° N. to Lat. 123° S., while 
it is wanting south of the last-named latitude, and besides it was not taken 
in the southwestern part of the area, west of Long. 100° and south of the line. 
Many of the specimens referred by Ortmann (1894) to EZ. mucronata G. O. 8. 
belong to E. distinguenda. But I have not seen a specimen of this species from 
any other area or ocean. The list shows that the species was several times taken 
at the surface, but that the specimens in question were nearly all immature and 
generally small. 
23. Euphausia lamelligera H. J. Hansen. 
Plate 8, figs. 4a-te; Plate 9, fig. la. 
1911. Euphausia lamelligera H. J. HANSEN, Bull. Mus. Océan. Monaco, no. 210, p. 32. 
Sta. 4588. Oct. 12, 1904. Lat. 19° 52’ N., long. 106° 22’ W. Surface. 1 young specimen. 
Sta. 4592. Oct. 13, 1904. Lat. 18° 20’ N., long. 103° 40’ W. Surface. 2 specimens. 
Sta. 4605. Oct. 17, 1904. Lat. 12° 21’ N., long. 92° 13’ W. 300 fms. to surface. 4 specimens. 
Sta. 4611. Oct. 18, 1904. Lat. 10° 33’ N., long. 88° 30’ W. Surface. 27 specimens. 
Sta. 4613. Oct. 19, 1904. Lat. 9° 45’ N., long. 86° 20’ W. 300 fms. to surface. 1 specimen. 
Sta. 4615. Oct. 19, 1904. Lat. 9° 7’ N., long. 85°11’ W. Surface. 20 specimens. 
Sta. 4619. Oct. 20, 1904. Lat. 7° 15’ N., long. 82°8’ W. Surface. 30 specimens. 
Sta. 4640. Noy. 6, 1904. Lat. 0° 39.4’S., long. 88° 11’ W. Surface. 1 specimen. 
Sta. 4648. Nov. 9, 1904. Lat. 4° 43’S., long. 87°7.5'W. Surface. 1 specimen. 
