L. ovalis, teres, opaca, viridis. Oval, round, opake, green leucophra.
This animalculum is supposed to be ciliated, from its bright twinkling appearance, which probably arises from the motion it gives the water; it is nearly of an egg-shape. It was found in December among the lemna minor.
157. Leucophra Vesiculifera.
L. ovata, interaneis vesicularibus. [Plate XXV.] Fig. 41. Oval leucophra, with vesicular intestines.
An animalculum that is a kind of mean between the orbicular and oval, very pellucid, with a defined dark edge and inside, containing some very bright vesicles, or bladders. The middle frequently appears blue, and the vesicles seem as if set in a ground of that colour. Müller could never perceive any of those rays which are mentioned by Spallanzani; he confesses, however, that he once saw an individual like this environed with very small unequal shining rays.
158. Leucophra Globulifera.
L. crystallina, ovato-oblonga. Crystalline leucophra, of an oblong oval shape.
The body is round, very pellucid, without molecular intestines, though at one edge it has three little pellucid globules; it is everywhere set with short hairs. It was found in a ditch where the lemna minor grew.
159. Leucophra Pustulata.
L. ovato oblonga, postice oblique truncata. An oblong oval leucophra, the lower end obliquely truncated.