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TRICHODA. 
An invifible, pellucid, hairy worm. 
SPECIEFC CHARACTER. 
Oblong trichoda, the fore-part truncated and hairy, the tail articu- 
lated, and divided into two briftles. 
This invifible animalculum is common in marfhy places, particu- 
larly in the fwamps near the banks of the river Thames. 
When magnified, the body is pellucid, and appears like two feparate 
bodies, one enclofing the other; the interior part is filled with mole- 
cules, and the exterior is membranaceous: they are capable of exten- 
fion or dilation, and of folding in various dire€tions. At the extre- 
mity of the interior part is a mufcular orbicular membrane, which is 
opened or fhut at pleafure, and forms the mouth. 
Fic. 1. The interior part protruded with the mouth open. 
Fic. 2. The jaws fhut. 
Ee PLATE 
