Floscularia.'] THE INFUSORIA. 349 



the body and part of this foot are protruded. Found upon 

 the leaves of Hottoniapalustris. Length, when extended, 

 l-18th; case l-36th. 



680. Floscularia ornata (Cercaria, M.) The adorned 

 Floscularia is small, case hyaline, rotatory organ six-lobed, 

 no proboscis. This animalcule is sluggish and unfolds 

 itself slowly, but often contracts quickly within its case. 

 The end of each lobe of the rotatory organ is thickened, 

 and has from five to eight very long cilii, generally stretched 

 stiffly out. They are very fond of Chlaraidomonas, and 

 when they swallow large bodies, as Naviculae, contract the 

 whole body. Ehrenberg has numbered as many as five 

 ova in the case at one time : some were generally quite 

 developed, shewing the movement of the young, with the 

 two red eyes. Under a slight pressure the shell burst, and 

 the young animalcule crawled out, slightly vibrating. The 

 cilii were short and not very distinct, but the oesophagal 

 head was in action. When old, the foot-tail is truncated, 

 and during contraction has transverse folds; rotatory organ 

 extended, with five lobes. Found upon Ceratophyllum. 

 Size of body l-108th. 



