564 THE VOYAGE OF H.M.S. CHALLENGER. 



ft. Rays, with no definitely defined lateral wall. Median 

 line of abactinal spinelets zigzag. Intermediate 

 spines may be wanting altogether, or may be rather 

 numerous, but small. Rays shorter than in the 

 preceding species ........ africava. 



Chorology of the Genus Asterias. 

 a. Geographical distribution : — 



Atlantic : Forty-eight or forty-nine species, between the parallels of 82° N. 

 and 40° S. 



Asterias gramlandica, from Greenland and extending northward 

 to Discovery Bay (lat. 81° 41' N.), from Assistance Bay, Labrador, 

 and Grand Manan, and off the islands of Spitzbergen and Nova 

 Zembla. Asterias spitzbergensis, Asterias gunneri, and Asterias 

 panopla, from Spitzbergen, the latter extending to the Scandinavian 

 coast and into the Kara Sea. Asterias hyperborea and Asterias 

 normani, off Beeren Island. Asterias linckii, between Beeren 

 Island and Spitzbergen, and extending to the north coast of Nor- 

 way. Asterias polaris, from Greenland and Labrador. Asterias 

 vulgaris, extending from Labrador to Cape Hatteras. '"Asterias 

 (Hydrasterias) ophidion, south of Halifax, Nova Scotia. * Asterias 

 brachiata, Asterias forbe^i, Asterias littoralis, Asterias tenera, * Aste- 

 rias (Lept asterias) compta, Asterias lacazii, Asterias tanneri, and 

 Asterias briareus, off the coast of the United States of North America. 

 Asterias linearis and Asterias angulosa, from the Alligator Eeefs off 

 Florida. Asterias contorta, Asterias fascicularis, and Asterias gra- 

 cilis, from the "West Indian Islands. Asterias mexicana, from Vera 

 Cruz. Asterias hartii, from Brazil. Asterias atlantica, from the 

 Abrolhos reefs and Bermuda, and reported also from Cuba. (The 

 distinction of this species from Asterias tenuispina seems doubtful.) 

 Asterias bellii, off the eastern coast of Patagonia. Asterias antarc- 

 tica, Asterias alba, Asterias obtusispinosa, Asterias verrilli, '"Aste- 

 rias glomerata, and *Asterias cunninghami, from the Strait of 

 Magellan, the latter also from the Falkland Islands, and passing to 

 Tom Bay, in the Pacific area of the Strait. Asterias sjnrabilis, from 

 the Falkland Islands. Asterias rugispina, from Tierra del Fuego 

 and Port Famine, Strait of Magellan. Asterias georgkma and 

 Asterias steineni, from the Island of South Georgia. 



Passing now to the northern area on the eastern side, Asterias 

 disticha, from the Kanin Peninsula, White Sea. * Asterias (Stolas- 



