Canadian Rotifera. By J. Murray. 295 



Summary. 



Forty-two species were collected, all moss-dwellers except 

 Philodina australis, which may have come in the water with 

 which the mosses were washed (while in British Columbia). Five 

 new species are described. I know of no previous records for 

 Canada, so that they are all additions to the Canadian Kotifer 

 fauna. 



I find 27 species of Bdelloida recorded for the United States. 

 Half-a-dozen, at least, of these species are considered doubtful, for 

 reasons given above. Including the doubtful species there are 63 

 Bdelloida known in North America. 



Only six of our species were previously recorded for North 

 America. No doubt the reason for the number being so small is 

 that our species are all moss-dwellers, while most earlier naturalists 

 examined only ponds, lakes, and streams. 



The great majority of the species are common or widely- 

 distributed — only about a dozen species are so limited in range as 

 to call for remark. The five new species are as yet only known in 

 Canada* — P. australis is known on both sides of the Pacific 

 (Australia and Vancouver), and not elsewhere. C. spidosa is limited 

 to North and South America ; C. zickendrahti to Russia and 

 Canada: H. microcephala to Scotland and Canada, S. rubra, 

 C. corniyera, and A. lonyicomis are species hitherto supposed to be 

 rare, which are proving to be widely distributed. P. socialis, if it 

 is not meant as a synonym for C. socialis KelL, is only known in 

 the United States. 



There are only 12 species in the list for North America which 

 are not known in Europe ; 14 which are not known in Britain. 



Besides the 42 species in our list, several others were seen, 

 distinct from any yet noted for North America, but some of them 

 were already known to Mr. Bryce, though not yet described, and 

 others were not studied sufficiently. 



Bibliography. 



1. Atswood, H. F. — Volvox globator (supposed /•'. vulgareia Volvox). Amer. 



Journ. Micr. and Pop. Sci., iii. (1878) p. 116. 



•J. Bailey, J. W. — Microscopical Observations made in South Carolina, 



Georgia, and Florida. Smithson. Contrib. to Know- 

 ledge, ii. (1850) Art. 8 



3. Bosc— Le Rotifere de Carolina. Hist. nat. devers. suite de Buffon (1802) 



pp. 176, 181 i not seen, reference from Mandl, 1839). 



4. Bktoe, D. — A New Classification of the Bdelloid Rotifera. Journ. 



Quekett Micr. Club (Dec. 1910, for Nov. 1910) p. 61. 



5. Cox, C. F— Reproduction of Eotift vulgaris. Amer. Journ. Micr. and 



Pop. Sci. (1877) p. 44. 



* Callidina asperula has since been found in Inland by the Clare Island Survey. 



