COPEPODS GATHERED BY ALBATROSS—WILSON 301 
the male from the Wilkes plankton to the species fera (see remarks 
under this species, p. 293). Giesbrecht’s description and figures are 
the only ones thus far published, and again Sars’ pencil sketches differ 
from them in enough details to warrant their reproduction here. A 
comparison of the urosomes shown in figures 215 and 216 with those 
appearing in figures 3 and 4 of plate 40 of the Naples monograph will 
show that in this genus, where the urosome is often so asymmetrical as 
to become grotesque or bizarre, too much specific value must not be 
placed upon its exact details. They must be expected to vary in a 
greater degree than in those genera where normal symmetry prevails. 
In consequence, the details of the appendages assume greater specific 
value. 
PONTELLA VALIDA Dana 
PLATE 29, FIGURES 432-444 
Pontella valida DANA, United States Exploring Expedition, 1838-1842 (Wilkes), 
vol. 14, pt. 2, Crustacea, p. 1171, 1853; pl. 82, fig. 6Ga—g, 1855. 
Stations 5105; 5133; 5175; 5176; 5299; 5460; Butauanan Island, 
Philippine Islands. In the Wilkes plankton Dana described a species 
that he named valida, founded upon male specimens from north of 
New Zealand. From the Challenger plankton Brady described both 
sexes of a new species that he called elephas. The descriptions of the 
male as given by Dana and Brady correspond so fully as to leave no 
doubt that they are the same species. This gives Dana’s specific name, 
valida, precedence and makes Brady’s name elephas a synonym. It 
was not present in any of the other plankton lists. 
Claus (1893, p. 274), in a “Revision of the Pontellidae,” established 
a new subgenus /vellopsis, to include Dana’s and Brady’s species, al- _ 
though he acknowledged that the details of the two species were really 
too meager to warrant such an action. Giesbrecht (1898, p. 139), how- 
ever, upon the same meager details raised the subgenus to full generic 
rank, discarding Dana’s species as invalid. The generic diagnosis 
given is inaccurate and contains no real generic difference, so the genus 
cannot be accepted. This species corresponds so closely in its general 
makeup to the other species of the genus Pontella that it must be placed 
in that genus. The plankton at these Albatross stations contained 
specimens of both sexes in sufficient numbers to permit the complete 
redescription. 
Female.—Metasome elliptical, a little less than three times as long 
as wide; head triangular and rather sharply pointed in front but 
without a crest. Rostrum stout and pointed directly downward, the 
distal third bifurcate without alens. Dorsal eyes large, close together, 
and more or less concealed by their opaque covering. Fourth and 
fifth segments separated, the latter very short and squarely truncated 
