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PLATE XIV. 



TRICHODA POCILLUM. 



Trichoda. 

 An invifible, pellucid, hairy worm. 



SPECIFIC 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 fwarnps near the banks of the river Thames. 



When magnified, the body is pellucid, and appears as two feparate 

 bodies, one enclofmg 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 directions. At the extre- 

 mity of the interior part is a mufcular orbicular membrane, which is 

 opened or fhut at pleafure, and forms the mouth. 



Fig. i. The interior part protruded with the mouth open. 

 Fig. 2. The jaws fhut. 



F 2 - PLATE 



