Report on the Malacostraca, Pycnogonida and some Entomostraca. 567 



1 R. Species from the cold area of the Polar Ocean. 



Some of the species go eastwards into the Kara Sea and one is 

 found at East Greenland in quite shallow water. Two species, 

 Stegocephalus ampulla and Colossendeis proboscidea are also found 

 north of Siberia. The species are the following: 



Sclerocrangon ferox. Anceus robustus. 



? Bythocaris simplicirostris. Arcturus hystrix. 



— leucopis. Ilyarachna Bergendahlii. 



— Payeri. Eurycope gigantea. 

 Stegocephalus ampulla. Sphyrapus anomalus. 

 Halirages quadridentatus. — serratus. 

 Cleippides quadricuspis. Ascorhynchus abyssi. 

 Halice abyssi. Nymphon megalops. 

 Amathillopsis spinigera. Eurycyde hispida. 



? Ischyrocerus megacheir. ? Colossendeis proboscidea. 



— brevicornis. — angusta. 



Dulichia macéra. 



The plankton forms Erythrops glacialis, Pseudomma frigidiim 

 and Cydocaris Guilelmi as well as Amblyops Crozetti and Pseudomma 

 Theeli have the same distribution as this group; the last two are 

 only known from East Greenland. 



Sclerocrangon ferox occurs from E. Greenland to the Kara Sea 

 and in the south to N. E. of Shetland. 



Bythocaris simplicirostris seems to have its main distribution in 

 the cold area, but goes both farther east (Murman Coast) and S. 

 (Mandai S. of Stavanger); it occurs generally in positive temperatures 

 and has only a few times been taken in lower temperatures, namely, 

 E. Greenland (Kaiser Franz Josef Fjord 78°30' N., 133 fm. (Ohlin 1901), 

 Pendulum Isl. 74Чз° N., 110 fm. (H. J. Hansen "Ingolf" 1908) and 

 N. Shannon ca. 75° N. 30 fm. (Buchholz)) and a little S. E. of the 

 Faeroes 61°:^3' N., 5°04' W. 255 fm., 0° (H. J. Hansen "Ingolf"); see 

 further Appellöf 1906, p. 167 and H. J. Hansen "Ingolf 1908, p. 69. 

 It is thus doubtful, how far this species can with right be said to 

 belong to the cold area. 



Bythocaris leucopis and B. Payeri belong to about the whole cold 

 area (H. J. Hansen, "Ingolf"). 



Stegocephalus ampulla has a very wide distribution right from 

 Greenland (H. J. Hansen 1887, locality not stated) to Siberia (Stux- 

 berg "Vega"). Sars (Norwegian North-Atlantic Exped.) gives it from 

 11 localities, all belonging to the cold area or the sea eastwards; 

 that the records really apply to the species S. ampulla Phipps and 

 not 5. inflatus Kr. seems beyond all doubt, as Sars would otherwise 



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