Zoogeographical Investigations in Southern Greenland. 373 
Astrogonium Parelii ' Ophiura Sarsii 
Ctenodiscus crispatus ? — robusta 
Solaster papposus — nodosa 
— endeca Ophiomusium Lymani 
Lophaster furcifer Ophiopholis aculeata 
Pteraster militaris | Amphiura Sundevalli 
Diplopteraster multipes ' Ophiacantha bidentata 
Henricia sanguinolenta ’ Phormosoma placenta 
?Asterias polaris Strongylocentrotus droebachiensis 
II. Plankton. 
(К. St., Danmark Exped. р. 606; Conspectus р. 421). — This group 
naturally includes neither Pyenogonida nor Echinodermata. 
A. Arctic Plankton species. 
(К. St., Danmark Exped. р. 607; Conspectus р. 421). 
In the Danmark Exped., 18 species of Malacostraca are noted, to 
which must be added Boreomysis scyphops; on the other hand, Mysis 
oculata and Dajus Mysidis at least should be erased, as being in reality 
littoral forms; these are therefore noted in the present work under the 
heading of bottom fauna. 
Of all the mainly arctic species the “Rink” material includes only 
Euthemisto libellula, this, however, only in small quantities as compared 
with the other Hyperines. 
Apherusa glacialis (Conspectus р. 175) which is an arctic species, 
and may with some reason be referred to the plankton, was strangely 
enough found at great depths both at the mouth of Kvanefjord and 
up in Bredefjord (vide p. 289). 
Pseudalibrotus Nanseni (vide p. 278) which is new for Greenland, 
was taken up in the Sermilik and in Bredefjord with 400, 500 and 800 m.w., 
i.e. probably about 200—400 m. below the surface. This is an arctic 
species, hitherto found only in the Siberian sea; the determination is, 
however, not absolutely certain, and it is moreover, not impossible that it 
may have been taken nearer the surface than the length of wire would 
seem to indicate. 
Entomostraca are not included in the geographical survey given 
in the Danmark Exped.; the character forms for plankton are however, 
noted in the present work. 
Pseudocalanus elongatus (Conspectus р. 312) appears in the “Rink” 
material as a surface form (0— abt. 100 m.) predominating over all 
other species at these depths; it is mainly an arctic form, but is found 
as far south as the Mediterranean and the Black Sea. 
Calanus hyperboreus (Conspectus p. 307) is mainly arctic, but is 
also found in warmer water layers, as for instance along the whole of 
the Norwegian coast. In the “Rink” material it amounts to abt. 5—10 °/o 
of the Copepoda from 200 m. depth and beyond. 
