278 



DESCRIPTION OF 



[Polygastrica. 



The genera are distributed as follows: 



surface of 

 body desti- 

 tute of vi- 

 bratile cilii 



direct 



truncated 



mouth 



(no lip) 



vibratile rbody simple 



Enchelys. 



cilii at the<| 

 mouth l^body double ? Disoma. 



f the body covered 1 



Actinophrys, 



not vibra- 

 tile 



stalkless with ra y s J 



[ rays at the edge . . Trichodiscus. 



stalked Podophrya. 



Trichoda. 



I. with neck Lacrymaria. 



("oblique truncated mouth, with lip Leucophrys. 



mouth 

 (with lip) 



vib fj* lle 



direct truncated mouth, no lip .................. Holophrya. 



Teeth present Prorodon. 



Genus XCIX. ENCHELYS. The cylinder Animalcules. 

 Characteristics : Enchelia with body single, no vibratile 

 cilii upon its surface; mouth truncated (direct, not oblique), 

 devoid of teeth. A wreath of cilii is distinctly to be ob- 

 served around the mouth in three species ; in one it is 

 indistinct. In E. pupa the form of the alimentary canal 

 is accurately seen ; the polygastric cells, mouth, and dis- 

 charging orifice, are recognized in all. In E. pupa and 

 nebulosa, very delicate ova granules are observable, and 

 in E. farcimen a contractile bladder. The self-division is 

 transverse and complete. 



429. ENCHELYS pupa (M.) The doll Enchelys has 

 a turgid club-shaped body, attenuated anteriorly. The 

 granulated ova are of a pale yellowish-green colour, and 

 disposed around the stomach-cells; neither glands nor 

 seminal bladder are visible. Figures 258 and 259 repre- 

 sent two specimens: in the first the currents produced by 

 the cilii around the mouth are distinct ; they are both re- 

 presented as fed on coloured substances. It is remarkable 

 that this is the only species of Polygastrica of which 



