OF ANIMALCULES. 119 



plumed processes, similar to the rotatory organs of the 

 wheel animalcule. (See figure 1370 Found in water- 

 butts and cisterns. 



228. Leucophrys pyriformis. (New species, E.) — The 

 pear shaped Leucophrys. — This creature resembles the 

 Kolpoda pirum (163), but may be distinguished from it 

 (when a little indigo is added to the water) by the pre- 

 sence of longitudinal fringes of hair, as shewn at figure 

 163. Near the mouth, which is situated at the side, the 

 cilia are longest : these occasion currents in the water, 

 as indicated by the arrows. They propagate by division. 

 Figure 162 is a young specimen, in which, as in figure 

 163, the dark spots represent the gastric sacs filled Avith 

 opaque food. Length, 1 -280th of an inch. 



229. Lev COPHRYS patula, E. {Trichoda patula, M.) — 

 The wide-mouth Leucophrys is included in the genus Tri- 

 choda, by MuUer; but as Ehrenberg demonstrates that 

 it is entirely covered with cilia, I have placed it with 

 the Leucophrys. It is a large animalcule, and therefore 

 a good subject for examination as to the form of its 

 alimentary organs, which consist of a tubular membrane, 

 the anterior extremity of which is dilated, and forms the 

 mouth : it then proceeds through the body, taking a 

 serpentine course, and terminates at the lower extre- 

 mity, where it is enlarged. During its progress it sends 

 out short tubular branches in all directions ; these are ter- 

 minated by small spherical sacs or stomachs, like those 

 of the Enchelis (70, fig. 41). 



Figure 159 shews this animalcule magnified 380 times. 



