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PLAT #® May. 
TRICHODA- POCILEUM, 
TRICHODA. 
An invifible, pellucid, hairy worm. 
SPECIFIC CHARACTER. 
Oblong trichoda, the fore-part truncated and hairy, the tail articue 
lated, and divided into two briftles. - “ 
This invifible animalculum is common in marfhy places, particu- 
larly in the {wamps 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. 
Frc. 1. The interior part protruded with the mouth open: 
Fic. 2. The jaws fhut. 
F2 PLATE 
