﻿128 Proceedings of the Royal Physical Society. 



As Dr Bruce assures me that everything found will be 

 new for the island, I am induced to publish a note on the 

 very meagre result obtained. 



ROTIFERA. 



Philodina Jlaviceps, Bryce (3). A species only recently 

 discovered in Scotland, and easily recognisable by the spurs, 

 which are very short. 



Callidina angnsticollis, Murray (4). One of the most 

 widely distributed of all Eotifers. The case only was | 

 found on Gough Island, and measured inch (190 /^) 

 in length. 



Bdelloid egg. Similar to that of Philodina citrina, which 

 has a prominence at one pole of the egg. Several species, 

 of diiferent genera, have this type of egg, so that no certain 

 identification can be made from it. 



Ehizopoda. 



Jleliopera petricola, Leidy, var. amethystea, Penard. 



Difflugia sp. Of hemispherical form, like an Arcella. 



Euglypha ciliata (Ehr.). 



Englypha sp. No spines, section circular. A Ehizopod, 

 with the form of a Eugly])ha^ and similar surface plates, but 

 without spines, has been found in Scotland also. 



In addition to the four species named, there were two 

 worms, a Nematode and an Oligochcete^ and a blue-green 

 tabular Alga, with the cells grouped in multiples of four. 



In studying the micro-biology of lands previously un- 

 explored, one does not anticipate much peculiarity, even in 

 the most remote islands. The reason for this is that the 

 majority of microscopic fresh-water or land species are what 

 Jenning's calls "potentially cosmopolitan," that is to say, 

 they can be conveyed through the air to all parts of the 

 world, in the form of eggs or spores, or even in some classes 

 in the adult condition, and may settle down in any part 

 offering favourable conditions. 



