COPEPODS GATHERED BY ALBATROSS—WILSON 143 
female only, rather than the representative of a species altogether new. 
Sometimes there seems to be an exceptional dearth of males, as in the 
Monaco plankton, from which more than 100 species were described 
from females alone. 
The Albatross plankton contributes the missing opposite sex of the 
following 26 species already described: 
Acartia lara Dana, male. Pareuchaeta grandiremis (Giesbrecht), 
Acartia tumida Willey, male. male. 
Disseta scopularis (Brady), female. Pareuchaeta rasa Farran, male. 
Huaetideus bradyi (A. Scott), male. Phyllopus aequalis Sars, male. 
Huchaeta longicornis Giesbrecht, male, Phyllopus giesbrechti A. Scott, male. 
Euchaeta media Giesbrecht, male. Sapphirina longifurca A. Scott, male. 
Euchaeta pubera Sars, male. Scaphocalanus angulifrons Sars, male. 
Huchirella bitumida With, adult male, Scaphocaianus echinatus (KFarran), 
Euchirella galeata Giesbrecht, male. male. 
Lophothriz humilifrons Sars, male. Scaphocalanus medius (Sars), male. 
Lophothriz latipes (T. Scott), male. Scolecithricella auropecten (Gies- 
Macandrewella chelipes (Giesbrecht), brecht), male. 
female. Scolecithricella dentata (Giesbrecht), 
Macandrewella sewelli Farran, male. male, 
Pareuchaeia californica (Esterly), male Scottocalanus helenae (Lubbock), 
Pareuchaeta erebi Warran, male. female. 
In dealing with the new species the names proposed by Sars for the 
species he regarded as new have been retained as far as possible. Some 
that were new at the time he made the drawings have since been de- 
scribed by later investigators, to whom of course they must be credited. 
But many of the drawings made by Sars are worthy of publication, 
since their wealth of detail fully establishes species that had been left 
questionable by reason of meager description and poor figures. Sars, 
however, left no manuscript of any sort, and therefore the descriptions, 
the measurements, and the remarks belong entirely to the present 
author. A list of the new species described in this paper is given on 
page 301. 
OTHER COMPARABLE COLLECTIONS 
In order to obtain a better conception of general plankton distribu- 
tion than can be obtained from any single record, comparisons are 
drawn with five other plankton lists of special importance not only 
for their great intrinsic value, but also because they are among the 
most comprehensive lists that have thus far appeared and because 
they cover much the same areas as those traversed by the Albatross. 
These lists or reports may be characterized briefly in the order of their 
appearance. 
1. Dana, James Dwient. Crustacea [ofthe] United States Explor- 
ing Expedition during the years 1888 to 1842, under the command of 
