WORMS. INFUSORIA. 105. Vorticella. 701 



In fts^nant waters, and appears to the naked eye like a yellowifh 

 dot 3 , and in rain water that has flood Ibme time in gutters and 

 cifterns: it very frequently changes its form and motion, from 

 a long taper body to a fhort rroad flat one : tne rotatory organs 

 turn tike wheels with confiderable velocity : tail compofed of 

 about 3 retractile joints and terminated by 4 minute hooks. 



•twnala- Inverfely conic, with the aperture lobed, and tail furnifhed 

 ta m with 2 fmall bridles. 



Adams Microfc. p. 547. tab. 27./ 45. m 



In pure water: : pellucid, cylindrical, with molecular inteitines; 

 . moves wi;h velocity in an obiicjue direction. 



Sacculate. Inverfely conic, with a lunate aperture: trunk 2-toothe4 

 behind, wtth a long 2-leayed tail. 

 Adams Microfc, />, 545. tab. 27./. 42, 43. 



C. Without tall or ftem. 



• Ampulla, Contained in a bottle- ihaped pellucid bag: head divided 

 into 2 lobes. 



Adams Microfc, p, 544 tab. 26 / 4, 5. 



Bag in the (hape of a common water-bottle, in which the ani- 

 malcule is pUced, fometimes at the bottom, fometimes nearly- 

 filling it. 



*Crattsga- Subglobular, cluftered and fometimes united by a very rni» 

 ria. nute ftem or tail. 



Adams Microfc, p. 400. tab. ZZ.f, 40. 

 BakerMicogr.p. $ ft. tab. 13./. 5. 1 — 3. 

 Roef.Inf 3, polyp, p. 604. tab.g$,f. 2, a a. 3, 

 Ledermuller Microjc. tab. 88./, o, p. 



Found in muu and about the Monoculus cjuadricornis in the 

 month of April, generally heaped together in a iphserical form 

 and often united to a common ibdk. 



■ Gwkulata. Dilated, pellucid, with an incilion in the fide. 



Adams Microjc p. 544 ». 350. 



In infufions of ditch water, and appears to the naked eye as a 

 white point : gregarious, pellucid, u kh. dark intefunes. 



*Nafuta* Cylindrical, with a projecting point in the middle of the cup. 



Dowvans Engl. Inf. tab. 29 . f. 2. 



Adams XAicrofc. p. 541. tab ZJ.f 3$, 39. 



In fiagnant water : inviiible to the naked eye, pellucid, changing 

 its form perpetually, quick in motion; and having the rota- 

 tory organ iurrounding the middle of the body. 



*Cfa<« 



