160 
of two segments. The structure of the fifth pair of feet of the two sexes readily distinguishes 
this species from any of the other known members of the genus. 
Pontella fera has been recorded from the Indian and Pacific Oceans. 
3. Pontella princeps Dana. 
Pontella princeps Dana, 1849, p. 34. 
Pontella princeps Giesbrecht, 1893, p. 461, pls. 24 & 4o. 
Pontellina (Iva) princeps Claus, 1893, p. 273. 
Pontella princeps Giesbrecht & Schmeil, 1898, p. 142. 
Pontella princeps YVhompson & Scott, 1903, p. 252. 
Two females and two males belonging to this species were obtained from the plankton 
collected at the following stations. 
Stat. 35, male. — Stat. 66, female. — Stat. 117°, female. — Stat. 138, male. 
The females are closely allied to Pontella atlantica, but they differ from that species 
in the structure of the abdomen. 
This Pozxtella has been recorded from the Indian and Pacific Oceans. 
4. Pontella securifer Brady. 
Pontella securifer Brady, 1883, p. 96, pl. XLV, figs. I—9. 
Pontella 
Pontella 
securifer Giesbrecht, 1893, p. 461, pls. 24 & 4o. 
SECUILCH. Mien SCOLE, SOR sy PanoO: 
Pontellina (Ivellina) securtfer Claus, 1893, p. 274. 
Pontella 
Pontella 
Pontella 
Pontella 
securifer Giesbrecht & Schmeil, 1898, p. 142. 
securifer Thompson & Scott, 1903, p. 252. 
securifer Cleve, 1904, p. 195. 
securifer Wolfenden, 1905 (a), p. 1021. 
Seventeen females and twenty males belonging to the above species were obtained from 
the plankton collected at the following stations. 
Stat. 19, 2 specimens. — Stat. 35, 3 specimens. — Stat. 36, I specimen. — Stat. 37, 1 spe- 
cimen. — Stat. 66, 4 specimens. — Stat. 98, 2 specimens. — Stat. 110, 3 specimens. — 
Stat. 117°, 2 specimens. — Stat. 203 (surface), 2 specimens. — Stat. 229, 2 specimens. — 
Stat. 230 (HENSEN vertical net, 2000 metres to surface), 2 specimens. — Stat. 282, 1 spe- 
cimen. — Stat. 315, 2 specimens. 
This species can readily be recognised by the prominent lens in the base of the rostrum, 
and by the structure of the fifth pair of feet of the two sexes. 
Pontella securifer has been recorded from the warm parts of the Atlantic and Indian Oceans. 
5. Pontella alata nov. sp. Plate LI, figs. 11—15. 
Female — length 3,58 mm. 
Seen from above, the body is elongate and moderately robust. The cephalic segment 
is furnished with side hooks and a pair of dorsal eye-lenses. The last thoracic segment is 
160° 
