Microscopical Essays. 



641 



350. Vorticella Hians. 



Vorticella fimplex, citriformis, pedunculo retortili. This is 

 among the mo ft minute. The head refembles a citron, the apex 

 truncated, the bafe narrow ; a gaping cleft is difcovered defcend- 

 ing from the apex to one-third of the body. 



351. Vorticella Bellis. 



Vorticella fimplex, hemifpherica, margine contra£tili. Sim- 

 ple, hemifpherical, with a margin that it can contracl: at pleafure. 



The head (capitulum) fcarcely pellucid, the infide quite filled, 

 yellow, refembling much the flower of the daify ; it is ciliated 

 round the margin, and are in great abundance, moving in a 

 rotatory manner. 



The foot, or pedicle, is long, (lender, and pellucid ; it is di- 

 vided into two parts, with fmall knobs on the top of each ; the 

 bafe adheres to a bulb, the under part is covered with fmall 

 fcales. 



352. Vorticella Gemella. 



Vorticella fimplex, fphaerica, capitulo gemino. Simple, 

 fpherical, with a double head. 



The pedicle is long, and conftantly furnifhed with two little 

 heads at it's apex ; thefe are bright and clear. 



4 I 353- Vor- 



