COPEPODS GATHERED BY ALBATROSS—WILSON 151 
has been made toward a knowledge of the surface plankton, but it is 
only a start, and a broad field is still left for future investigation and 
discovery. Many species have been obtained in vertical hauls from 
considerable depths, but we have absolutely no definite knowledge as 
to where they entered the net. Before any real knowledge of depth 
distribution can be obtained there must be a series of horizontal tows 
made at different depths with a net capable of being closed while being 
lowered, opened as the tow is being made, and closed again while 
it is being raised to the surface. A series of such tows and only such 
will give us the definite knowledge required for further study of the 
deep-water forms. 
THE SPECIES COLLECTED 
In order that credit may fall where it is properly due, the name of 
the author follows each of the new species. The species followed by 
“Sars MS.” are based on the very excellent drawings that Dr. Sars 
made of them. As he left no written notes, I have supplied the neces- 
sary diagnostic descriptions.‘ 
Genus ACARTIA Dana, 1846 
ACARTIA CLAUSII Gieabrecht 
Acartia clausii GIrSBRECHT, Atti Accad. Lincei, Rome, ser. 4, vol. 5, sem. 2, p. 25, 
1889; Fauna und Flora des Golfes von Neapel, monogr. 19, pp. 507, 522, pl. 
30, figs. 2, 6, 9, 18-15, 17, 28, 36, 37; pl. 31, figs. 36, 37; pl. 42, fig. 32; pl. 43, 
figs. 3, 5, 14, 1892. 
Stations 39; 70; 4756; 4785. This species appeared in all the plank- 
ton collections except that of the Siboga Expedition. It is fairly well 
distributed, but nowhere is it abundant. 
ACARTIA DANAE Giesbrecht 
Acartia danae GIESBRECHT, Atti Actad. Lincei, Rome, ser. 4, vol. 5, sem. 2, p. 26, 
1889; Fauna und Flora des Golfes von Neapel, monogr. 19, pp. 508, 522, pl. 
30, figs. 1, 23; pl. 438, fig. 8, 1892. 
Stations 15; 24; 31; 34; 36; 39; 41; 44; 46; 47; 49; 51; 52-55; 57; 
59; 60; 62-67; 70; 71; 73; 77; 470; 3799; 3829; 3878; 3901; 4009; 4011; 
4087; 4673; 4756; 4952; 5102; 5120; 5125; 5133; 5134; 5155; 5175; 
5176; 5180; 5185 ; 5190; 5196 ; 5208 ; 5209 ; 5223 ; 5226; 5227; 5230-5234; 
5262; 5312; 5819; 5340; 5342; 5348; 5386; 53899; 5415; 5422; 5437; 
5460; 5489; 5530; 5601; 5647; 5651; Butaritari Lagoon, Gilbert Is- 
lands; Fiji Islands; Niuafu Island. 
As will be inferred from the foregoing list of stations, this is the 
“Under the International Rules, despite Dr. Wilson’s generous attitude toward Sars’ 
work, all new species must be credited to Wilson and his name follows that of Sars in 
these particular instances.—W. L. S. 
