344 Proceedings of Royal Society of Edinburgh. [sess. 
Sphoeroma gigas , Leach. Kerguelen, New Zealand. 
Dynamene Eatoni , Miers. Kerguelen, 
resembles D. Dumerilii, Aud., Natal. 
Cassidina emarginata , G. M. Kerguelen, Patagonia, Ealk- 
lands. 
Studer describes a C. maculata, also from Kerguelen, while G. M. 
Thomson has another from New Zealand. The original descrip- 
tion of C. typa , M. E., in the Histoire des Crustaces , iii. p. 224, 
has no locality. 
Cymodoce Dane ini, Cunningham. 
Idoteid^. 
Arcturides cornutus , Studer. Kerguelen. 
The only species of its genus. 
Arcturidj:. 
Arcturus brunneus , F. E. B. 1600 fathoms, Crozets. 
A. furcatus, Studer. Heard Island and Kerguelen. 
A. glacialis, E. E. B. South Ocean. 
A. spinosus, E. E. B. Marion Island. 
A. Studeri, E. E. B. Kerguelen. 
A. Stebbingi , F. E. B. Kerguelen. 
Not one of these species extends beyond the Southern Ocean. 
Other species are known from the Arctic, the Australian region, 
the Moluccas, the West Indies, and Patagonia. 
Astacilla marionensis, E. E. B. Kerguelen. 
This more shallow water genus, to which the British “ Arcturi” 
belong, has an almost world- wide distribution. 
jANIRIDiE. 
Jaera pubescens , Dana. Kerguelen and Tierra del Fuego. 
Semi- parasitic on Spheroma gigas and from the similar S. 
lanceolatum in Tierra del Euego. 
Jaeropsis marionis , F. E. B. Marion Island. 
Belongs to a genus of minute forms, of which one species is 
known from New Zealand and another from Sark. 
