Enchelia.] the 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 poly gastric 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. Midler saw around 

 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.'' 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-hke 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, 1 -620th to 1 -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. 



