THE STENTOR. 43 



garnished with one or more zones of cilia; these organs 

 being in most of the species limited to that region, and 

 not diffused generally over the body, as in the monads. 

 They increase by spontaneous division and gemmation, 

 and are destitute of a sheath, or carapace. We have 

 species of three genera before us. 



I. The STENTOR, or Trumpet Animalcule, (pi. n,%s. 13, 

 14, 15, 16). The animalcules now in view, and which 

 are seen in different attitudes, (pi. n, fig. 14), are called 

 Stentors. There are several species, some of which are 

 of a rose colour, others blue, green, (pi. n, figs. 13, 14), 

 &c. They are comparatively of a large size: one species 

 (Stentor Mulleri) is half a line in length, and therefore 

 visible to the naked eye. The body of one species is 

 garnished with cilia, and has a crown of larger cilia 

 around the aperture, which is spiral. The Stentors have 

 no pedicle, but they can fix themselves by the point of 

 the base. They transport themselves through the water 

 with rapidity, by means of their coronets of cilia. They 

 are very voracious: in the body of one specimen may 

 be seen several monads, which it has swallowed, (pi. n, 

 fig. 13). 



The Multi-shaped Stentor, (S. polymorphus), is of a 

 green colour, and varies its form greatly in different 



