154 The Ottawa Naturalist. [December . 



The numbers in heavy type refer to the Bibliographical 

 Index. 



I. MONAXONIDA. 



1. Halichondria panicea, Johnston. 1842. (14) 



Distribution— Kwer and Gulf of St. Lawrence (37) ; coast of New Eng- 

 land (33) ; Vancouver Island ; Queen Charlotte Islands and Behring- 

 Sea. (15, 16, 17, 18) 



Foreign distribution— Coasts of Great Britain (Johnston, Bowerbank); 

 Basse Rocks, off southeast coast of Ceylon (Carter); Kerguelen Is- 

 land (Carter, Challenger); Torres Strait (Ridley "Alert"); Japan 

 (Challenger); coasts of Norway, Sweden, Novaya Zemlya and 

 western Greenland (Fristedt). 



2. Halichondria disparilis, Lambe. 1893. 



Described in Transactions, Royal Society of Canada, vol. XI, p. 25, pi. ii, 

 figs. I, la; type in the museum of the Geological Survey of Canada. 

 Type localitj/- Gulf of Georgia, near Comox, Vancouver Island, B.C. 



3. EuMASTiA siTiENs, O. Schmidt. 1870. (26) 



Distribution — River and Gulf of St. Lawrence and coast of Nova Scotia; 



Greenland ; North Pacific Ocean and Behring Sea. (17, 18) 

 Foreign distributio?i — Pitlekai, eastern Siberia (Fristedt^'. 

 Schmidt's specimens are from Greenland. 



4. Petrosia hispida, Ridley and Dendy. 1886. (23) 

 Zoca///;)/ — Middleton Island, Gulf of Alaska (17). 

 Foreign locality — Royal Sound, Kerguelen Island (Challenger). 



5. Reniera cinerea, Grant. 1827. 

 Locality — Blunden Harbour, B.C. (16). 



Foreign distribution — Coasts of Great Britain (Grant, Bowerbank); Philip- 

 pine Islands (Challenger); Spitzbergen (Fristedt). 



6. Reniera rufescens, Lambe. 1892. 



Described in Transactions, Royal Society of Canada, vol. X, p. 75, pi. iv, 

 fig. 6, and pi. v, figs. 12, 12a ; type in the museum of the Geological 

 Survey of Canada. 



Type locality — Petropaulowski, Kamtschatka. 



Distribution —Arctic Ocean (Kotzebue Sound), Behring Sea and North 

 Pacific Ocean ; Gasp^ coast and Orphan Bank, off the entrance to 

 the Baie des Chaleurs, Gulf of St. Lawrence. (15, 17, 18) 



