C 6 3 ] 

 PLATE XXIX. 



F I G. I. * 



TRICHODA M ELI TEA. 



GENERIC CHARACTER. 

 An invifible, pellucid, hairy Worm. 

 SPECIFIC CHARACTER. 



Oblong ciliated trichoda, with a dilatable neck, the apex globular, 

 and furrounded with hairs. Mailer's Anhnalcula Infuforia, &c. 



Invifible to the naked eye, and rarely found except in falt-waters, 

 although we have met with one fpecimen in the water of the Thames. 



F I G. II. 



VORTICELLA NASUTA. 



GENERIC CHARACTER. 



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

 rotatory cilia. 



SPECIFIC CHARACTER. 



Cylindrical, with a prominent point in the middle of the cup. Mul- 

 let s Anim. Infuf. 



Is invifible to the naked eye, and appears of an unequal fize before 

 the microfcope is pellucid, with the fore part truncated and ciliated, 

 and moves in the water with great alertnefs, by the afTiftance of the 

 circle of hairs which encompafs the body. 



L FIG. 



