187 
British Museum, 1908, has described a new genus and species of Copepod as Paralabidocera 
hodgsont. Vhis form is undoubtedly identical with Paracartia antarctica described by the late 
I. C. THompson some ten years earlier, in ‘Transactions of the Liverpool Biological Society’, 
Wolk XM a13o98, page 2015. 
The members of the genus Acartca are easily identified by their slender and almost 
transparent body, and by the structure of the various appendages. 
Four species were represented in the plankton collected by the ‘Siboga’. 
1. Acartia danae Giesbrecht. 
Acartia danae Giesbrecht, 18809, p. 26. 
Acartia danae Giesbrecht, 1893, p. 508, pls. 30 & 43. 
Acartia danae Giesbrecht & Schmeil, 1808, p. 154. 
Acartia danae Cleve, 1903, p. 355. 
Acartia danae Cleve, 1904, p. 184. 
Acartia danae Wolfenden, 1905 (a), p. 1023. 
Acartia danae van Breemen, 1908, p. 159, fig. 176. 
This species is closely related to Acartia negligens, but the last thoracic segment is produced 
into strong spines. It was obtained from the plankton collected at the following two stations. 
Stat. 203 (HENSEN vertical net, 1500 metres to surface), 4 specimens. — Stat. 217, horizontal 
cylinder, 1 specimen. 
Acartia danae appears to be rather limited in its distribution. It has been recorded 
from the Atlantic and Pacific Oceans, and from the Mediterranean. 
2. Acartia erythraea Giesbrecht. 
Acartia erythraea Giesbrecht, 1889, p. 26. 
Acartia erythraea Giesbrecht, 1893, p. 508, pls. 30 & 43. 
Acartia erythraea Giesbrecht & Schmeil, 18098, p. 155. 
Acartia erythraea 1. C. Thompson, 1900, p. 284. 
Acartia erythraea Cleve, 1901, p. 4. 
Acartia erythraea A. Scott, 1902, p. 408. , 
Acartia erythraea Thompson & Scott, 1903, p. 254. 
Acartia erythraea Cleve, 1903, p. 355. 
Acartia erythraea \Wolfenden, 1905 (a), p. 1023. 
This proved to be the most common member of the genus in the plankton collected 
by the ‘Siboga’. It was present at the following stations. 
Sia, WE. == Siti, BG == Sigs 2; =" SiR 27" —— Siz 7, — Siio OO (mii), — 
Stat. 99. — Stat. 101. — Stat. 106. — Stat. 109. — Stat. 117%. — Stat. 118 (HENSEN 
vertical net, 900 metres to surface). — Stat. 121. — Stat. 136. — Stat. 141 (HENSEN vertical 
net, 1500 metres to surface). — Stat. 142. — Stat. 143 (HENSEN vertical net, 1000 metres 
to surface). — Stat. 144. — Stat. 148 (HENSEN vertical net, 1000 metres to surface). — 
Sia 4Ou— tate Oh —— Stat. 10S. —— | Stadt NOO-5 staal 7Ane —— Stat. 77. Stat. 
185 (HENSEN vertical net, 1536 metres to surface). — Stat. 203 (HENSEN vertical net, 1500 
metres to surface). — Stat. 205. — Stat. 2107. — Stat. 213. — Stat. 230 (HENSEN vertical 
net, 2000 metres- to surface). — Stat. 252. — Stat. 276 (HENSEN vertical net, 750 metres 
to surface). — Stat. 282. — Stat. 315. 
187 
