Enchelia.} TH E INFUSORIA. 281 



coloured food were distinctly seen by Eickhorn ; in 1777 

 Eickhorn noticed the erection and depression of the 

 tentacules or rays, and locomotion produced thereby ; in 

 1830 Ehrenberg saw the polygastric structure, and the 

 discharging orifice opposed to the mouth; also a short 

 proboscis in Ac. sol. Granular matter, probably repre- 

 senting ova, is seen in all the species. Miiller saw a round 

 gland, and Eickhorn self- division. 



434. ACTINOPHRYS sol (Trichoda sol, M.) The whitish 

 Actinophrys. Body spherical, of a whitish colour, rays 

 few, and about the length of the diameter of the body. 

 Ehrenberg says, " The rays or tentacules serve to feel, to 

 move, and to catch.' 5 Meyen states he has seen the rays, 

 or tentacules, when cut off, twist themselves, but Dr. 

 Ehrenberg considers that eminent botanist to have mis- 

 taken them for Vibrio bacillus, which is mostly present 

 with this species. The mouth is large and round, and has 

 a proboscis ; Eickhorn appears to have seen much larger 

 forms, so that they could be seen with the naked eye, and 

 found within them whole (!) forms of small Entomostracis ! 

 Found in the dust-like matter upon the surface of in- 

 fusions. Size 1-1 200th to l-430th. 



435. ACTINOPHRYS viridis. The green Actinophrys. 

 Body spherical, greenish, rays numerous and shorter than 

 the -diameter of the body, as shewn in Jig. 266. Found 

 amongst conferva. Diameter of the body, exclusive of 

 rays, l-620th to l-280th. 



436. ACTINOPHRYS difformis. The gibbous Actinophrys. 

 Body irregular, lobed, and hyaline; rays variable in length, 

 some longer than the diameter of the body. Diameter, 

 without the rays, l-570th to l-280th. 



