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18. Family PONTELLIDAE. 
Genus Pontella Dana, 1846. 
The members of this genus are separated from the other genera belonging to the family, 
by the three-jointed endopodite of the first pair of feet, by the presence of a pair of dorsal 
eye-lenses, and by the comparatively short rami of the rostrum. A lens for the ventral eye is 
occasionally developed in the base of the rostrum. 
Eight species of Pontella were represented in the plankton collected by the ‘Siboga’ 
during the investigations in the Malay Archipelago. Four of the species do not appear to have 
previously been described. 
i, Pontella danae Giesbrecht. 
Pontella danae Giesbrecht, 1889, p. 28. 
Pontella danae Giesbrecht, 1893, p. 461, pls. 24 & 40. 
Pontellina (Ivellina) danae Claus, 1893, p. 274. 
Pontella danae Giesbrecht, 1895, p. 260. 
Pontella danae Giesbrecht & Schmeil, 1898, p. 143. 
Two females belonging to this species were found in the plankton collected at Station 1172. 
The specimens appeared to be slightly immature, and the abdomen was covered with 
the cement for attaching spermatophores to the genital opening. The fifth pair of. feet of the 
two specimens is not quite symmetrical. The exopodite of the left foot is distinctly longer than 
the exopodite of the right foot. The fifth pair of the ‘Siboga’ specimens is similar to the fifth 
pair of Pontella danae var. ceylonica Thompson and Scott, but the furcal joints are identical 
with GIESBRECHT’s figure. 
Pontella danae has only been recorded from the Pacific Ocean. 
2. Pontella fera Dana. 
Pontella fera Dana, 1849 (pars), p. 34. 
Pontella fera Giesbrecht, 1893, p. 462, pls. 24 & 40. 
Pontellina (Eupontellina) fera Claus, 1893, p. 273. 
Pontella fera Giesbrecht & Schmeil, 1898, p. 144. 
Pontella fera A. Scott, 1902, p. 408. 
Pontella fera Thompson & Scott, 1903, p. 252. 
Pontella fera Wolfenden, 1905(a), p. 1021. 
One specimen identical with this species was obtained from the plankton collected at 
each of the following twelve stations. Six males and six females were found. 
Stat. 66. — Stat. 71. — Stat. 75 (HENSEN vertical net, r1 metres to surface). — Stat. 93. — 
Stat. 109. — Stat. 110. — Stat. 144. — Stat. 203 (surface). — Stat. 205. — Stat. 213. — 
Stat. 215. — Stat. 282. 
The last thoracic segment of the female is symmetrical and the abdomen is composed 
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