:.i 



BULLETIN 76, UNITED STATES NATIONAL MUSEUM 



it is difficult I" understand how anything like normal feeding could have been car- 



i ied on. 



Of the four specimens of Dendrogaster, three are full of eggs, or very early em- 

 bryos. The fourth 'one of the three from a single host) contains myriads of Cypris 

 Larvae, rather poorly preserved. These were about ready to emerge. Presumably 

 they reach the exterior through the papulae. 



Type locality.- Greenland. 



/>/■.■ -An arctic, circumpolar species. Von Hofsten (1915) gives a map, 



and summarizes the distribution as follows (p. 60): Spitzbergen; Siberian Ice-Sea to 

 east of the New Siberian Islands; Kara Sea; Barents Sea; Murman Coast and White 

 Sea; south, sout lica-! . west and northwest coasts of Greenland; Ellesmere Land; 

 Cumberland Gulf. East coast of North America: Labrador, Gulf of St. Lawrence, 

 banks oil" Nova Scotia, Newfoundland, Bay of Fundy. He gives the bathymetrical 

 distribution as from 5 to 150 meters. 



A. II. Clark (1920) records the species from Bernard Harbor, Northwest Terri- 

 tories, 2 to 3 fathoms, and from west of Cockburn Point, Dolphin and Union Strait. 



The specimens listed below range from the Arctic Ocean (Point Franklin and 

 between ("ape Lisburne and Icy Cape) to the southern part of Bering Sea (Bristol 

 Bay and north of Unimak Island), and to Kamchatka. The bathymetrical range is 

 from 7% to 71 fathoms. Ludwig (1SS6) records the species from St. Matthew Island, 

 and St. Laurence Bay, Siberia. 



Specimens examined. — Three hundred and twenty-nine. The letters signify: 

 c, forma cribraria; g, forma gruenlandica; i, intermediates. 



Specimens of Leptasterias groenlandica examined * 



