FAUNA OF TEE CHESS AND OADE. 



207 



mouth of the pouch and curling over a little. The pouch was 

 faceted and transparent, allowing the parts of the animal to be 

 seen. After moving about rather slowly it anchored itself by its 

 foot to the slide, and, swaying to and fro, set its wheels in 

 motion, causing strong currents of water to flow into the mouth 

 of the pouch whereby small protozoa, &c, were carried to its 

 powerful masticatory apparatus. 



6. Rotifer vulgaris, Schrank. — This species is appropriately 

 named Rotifer vulgaris, the "commonplace" Eotifer ; in the mud 



Fi*. 3. 



of the various streams and pools and of the canal, in samples of 

 their waters, in samples of moss, in damp mould, in the green 

 coverings and the washings of trees and walls, some Kotifers of 

 this species are easily obtained. Sometimes, e. g. in washings 

 from a fern-pot saucer in December, 1912, and in washings from 

 moss obtained from Nettleden in June, 1913, they were very 

 numerous and constituted nearly the whole of the rotiferan fauna. 

 During examination under the microscope, they often moved 

 somewhat slowly in leech-like manner, but soon made their way 

 into small collections of mud and organic matter on the slide, 

 wandered about and through these, and, finally emerging, 



