The body is pellucid, the upper part swelled out, within it are numerous obscure molecules, and three large globules, the ends rather incline downwards; when the water begins to fail, a few minute hairs may be discovered about the head and at the abdomen; the body then becomes striated longitudinally.
196. Trichoda Foeta.
T. oblonga, dorso protuberante, antice ciliata, extremitatibus obtusis. Oblong trichoda, with the back protuberant, the fore-part ciliated, both ends obtuse.
The body is round and long, and when extended somewhat resembles a rolling-pin in shape; both ends are obtuse, and one shorter than the other; it can draw in the ends and swell out the sides, so as to appear almost spherical.
197. Trichoda Patens.
T. elongata, teres, antice foveata, fovæ marginibus ciliata. [Plate XXV.] Fig. 54. This trichoda is long, round, in the fore-part it has a long hole, the edges of which are ciliated.
It is a long cylindrical animalculum, filled with molecules; the fore-part bright and clear, with a long opening, a, near the top, which tapers to a point, and is beset with hairs. It is found of different lengths in salt water.
198. Trichoda Patula.
T. ventricosa, subovata, antice canaliculata, apice et caniculo crinito. Big-bellied, rather inclining towards an oval figure, with a small tube at the fore-part, the upper-end of which is covered with hairs.