Cyclidina.'] THE INFUSORIA. 243 



animal matter. Whether the delicate vibration seen at 

 the mouth is produced by a proboscis or by cilii is 

 uncertain. In Ch. constricta, transverse self-division is 

 thought to have been seen. 



364. CHAETOMONAS globulus. The globular Chaeto- 

 monas is almost spherical, of an ash colour, and possessing 

 setae, or bristles. This animalcule has often the figure of 

 Monas guttula, though the latter is smaller; sometimes 

 two cluster together. Found in bad smelling infusions 

 of animal matter along with Pantotrichum enchelys, 

 Monas termo, &c. ; also in the dead bodies of Closterium 

 acerosum, as shewn at figure 113, which represents part 

 of the latter, with several animalcules around it. Size 

 l-2880th. 



365. CHAETOMONAS constricta. The constricted Chaeto- 

 monas is transparent, oblong, slightly constricted at the 

 middle, and having two setae, or bristles. Found in dead 

 Hydatina senta. Size 1-5 7 60th. 



R 2 



