C 57 ] 



PLAT E XXVL 



F I G. I. 

 TRIG HOD A COMET A. 



GENERIC CH AR JCTE R. 



An Invifible, pellucid, h.iiry Worm. 



SPECIFIC CHARACrER. 



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



F I G. IL 

 TRICHODA LONGICAUDA. 



SPECIFIC CHARACTER.. 



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

 long, y/ith two joints, and terminated by two briftles. 



F I G. III. 



VORTICELLA TROCFIIFORMIS NIGRA. 



GENERIC CHARACTER. 



A Worm, capable of contra6ting or extending itfelf, naked, with 

 rotatory cilia. 



SPECIFIC CHARACTER^ 

 Top-fbaped black vorticeUa, 



K Z This 



