Manchester Memoirs, Vol. xlii. (1898), No. 13. 23 



Coviparison of the cojninon shore fauna of the Falkland 

 Islands with that of Britain. 



It is interesting to note that there is a certain 

 resemblance between these two faunas, but it is more 

 clearly marked in some groups than in others. This may 

 be due, to a certain extent, to the great or small number 

 of species of the groups represented in the collection. 



Of the 16 species of Bryozoa represented, 6 (of which 

 two are cosmopolitan) are also found on our shores. 



Of species belonging to other groups, one {^Sycvn 

 ciliatuin) is British. 



All the genera (13) of Bryozoa in the collection are 

 represented in the British fauna ; of these, 8 are cosmo- 

 politan, the remainder are found only in temperate and 

 tropical waters. 



Of the 22 genera belonging to other groups, 15 are 

 British, 2 are restricted to the southern hemisphere, 4 are 

 found in the southern hemisphere, tropics and northern hemi- 

 sphere (Japan) ; the distribution of one iEdotia) is doubtful. 



Of the 24 species, exclusive of the Bryozoa, occurring 

 in this collection, 19 have been found in the southern 

 hemisphere only ; of these, 7 are more or less uniformly 

 distributed over the temperate portion, and 12 (three of 

 which are peculiar to the Falkland Islands) have been 

 recorded from and about the southern portion of South 

 America. Three have been recorded from north and 

 south temperate regions only ; one from north and south 

 temperate regions and the tropics ; one from tropics and 

 southern hemisphere only. 



The evidence gained from a study of the distribution 

 of the common .shore fauna of the Falkland Islands, 

 points to a near and close relationship, among the majority 

 of forms, between the faunas of the temperate portions of 

 the three great continents, including the islands in tem- 

 perate latitudes of the southern hemisphere. 



