REPORT UN THE ASTEROIDKA. 



459 



Pacific, thus adding another example to the remarkable list of representative forms found 

 in the temperate and sub-frigid zones of the Northern and Southern hemispheres respec- 

 tively. 



Chorology of the Genus Lophaster. 

 a. Geographical distribution : — 



Atlantic : One 1 species between the parallels of 40° and 82° N. 



Lophaster furcifer, off the coasts of Greenland and North America 

 (extending as far north as Discovery Bay), in the Gulf of Maine and 

 off Nova Scotia ; off the coasts of Norway, Spitzbergen, and Nova 

 Zembla. 

 Pacific : One species between the parallels of 40° and 55° S. 



Lophaster stellans, off the western coast of South America. 



/3. Bathymetrical range: 30 to 1325 fathoms. 



Greatest rauge of one species : Lophaster stellans, 40 to 1325 fathoms. 

 Both Lophaster furcifer and Lophaster stellans pass from the Littoral into 

 the Abyssal zone. 



y. Nature of the Sea-bottom: Lophaster furcifer is found on Clay of various kinds, 

 and on stones. Lophaster stellans on Blue mud. 



CJiorological SynojJsis of the Species. 



1. Lophaster furcifer (Diiben and Koren), Verrill. 



Clieetaster borealis, Diiben, 1844, Ofversigt K. Svensk. Vet.-Akad. Fbrhandl., p. 113. 



Sol aster furcifer, Diiben and Koren, 1846, K. Svensk. Vet.-Akad. Handl., Ar 1844, p. 243, pi. vi. 



figs. 7-10. 

 Lophaster furcifer, Verrill, 187S, Amer. Journ. Sci. and Arts, ser. 3, vol. xvi. p. 214. 



1 A second species (Lophaster radians), from Barbados and Havanab, is mentioned by Perrier in his 

 memoir on the Starfishes of the " Blake " Expedition (Now. Archives Mus. Hist. Nat., 2e Serie, t. vi. pp. 167, 169, 

 170), but no description is given. I am inclined to think that the generic name is due to a clerical error, and 

 that the form referred to is that described under the name of Korethraster radians (Bull. Mus. Comp. ZouL, 

 Harvard, 1881, vol. ix. No. 1, p. 12), but which seems to have been subsequently placed under the name of 

 Korethraster hispidus, as the description is repeated verbatim (Nouv. Archives Mus. Jlist. Nat., 2e Siirie, 1884, 

 t. vi. p. 212), although no reference whatever is made to the original name. 



