C 57 j 

 PLATE XXVL 



FIG. I. 

 TRICHODA CO MET A. 



GENERIC CHARACTER. 



An invifible, pellucid, hairy Worm. 



SPECIFIC CHARACTER. 



Spherical, the fore part hairy, with an appendant globule. 



F I G, IX, 



TRICHODA LONGICAUDA. 



SPECIFIC CHARACTER. 



Cylindrical, the firft part truncated, and fet with hairs. The tail 

 long, with two joints, and terminated by two briftles. 



F I G. III. 



VORTICELLA TROCHIFORMIS NIGRA. 



GENERIC CHARACTER, 



A Worm, capable of contracting or extending itfelf, naked, with 

 rotatory cilia. 



SPECIFIC CHARACTER* 

 Top-fhaped black vorticella, 



K a This 



