624 



Microscopical Essays, 



323. Vorticella Togata.- 



Vorticella fubquadrata, apertura integra, fpinis caudal ibus- 

 binis, plerumque unitis. Square vorticella, the aperture not di- 

 vided, the tail confirming of two long fpines, which are fometimes 

 fo united as to appear as one. 



The body is convex, of a dark colour, filled with molecules, 

 the middle part pellucid, the hinder-part rather broader than the 

 fore-part, the fore -part ciliated, the tail formed of two very thin 

 pellucid fpines, which are fomewhat curved, and much longer 

 than the body. 



324. Vorticella Longifeta. 



Vorticella elongata, comprefla, fetis caudalibus binis longiffi- 

 mis. Long vorticella, flat, the tail formed of two very long 

 briftles. 



The fore-part fmuated, and fet with minute cilia; the two 

 briftles which conftitute the tail are long, but one is longer than 

 the other. 



325. Vorticella Rotatoria. Fig. 46, 47, 48, 49, PL XXVI. A. 



Vorticella cylindrica, pedicello collar], cauda longa quadra- 

 cufpi. Cylindrical vorticella, with a little foot projecting from 

 the neck, a long tail furnifhed with four points. 



Brachi- 



