TARDIGRADA: CANADA 177 



In the accompanying table the distribution of the Canadian species, both in 

 Canada and over the world, is shown in thirteen columns. 



DISTRIBUTION : LOCAL AND GENERAL 



Canada. 



The table brings out some interesting facts in distribution. About nine of 

 the species are cosmopolitan, or very widely distributed. These are Milnesium, M. 

 hufelandii, M. echinogenitus, M. areolatus, M. intermedius, M. oberhauseri, M. 

 arcticus, D. chilenense, and D. alpinum. These occur in six or more of the nine 

 great regions into which the surface ol the earth has been divided for the purpose of 

 this comparison. 



The others are more restricted in their range. The seven new species described 

 in this paper are not all confined to Canada ; three of them are already known else- 

 where. M, areolatus (which was described some years ago as a variety of M. echino- 

 genitus} is even among the cosmopolitan species. M. occidentalis, though discovered 

 and fully studied in Canada, appears to have a " Pacific" distribution, as it has since 

 been found in Honolulu and Australia. Another species having the identical range 

 is Echiniscus intermedius, first discovered in Australia, and subsequently in Hono- 

 lulu and Canada. In this case the species appears under a slightly different form in 

 all three localities. 



BEIT. ANTARCT. EXPED. 1907-9. VOL. I. 2 A 



