622 



Microscopical Essays. 



It is a pellucid, crystalline, ventricofe animalculum ; within it, 

 on one fide of the body, there is a large clay-coloured oval mafs, 

 adjacent to which there is a pellucid oval fubflance ; the tail is 

 articulated and very fhort. 



' 320. Vorticella Senta. 



Vorticella inverfe conica, apertura fpinofa integra, cauda brevi 

 bicufpi. Somewhat of the fhape of a cone, the aperture fet 

 with fpines, the tail fhort, and divided into two points. 



It has fome refemblance to the larger vorticella rotatoria, but 

 is eafdy diftinguifhed from them by it's horned fpiny aperture, 

 and fimple rotatory organ. 



The body is mufcular, pellucid, folding varioufly, the fore- 

 part truncated ; round the margin of the aperture are rows of 

 hairs, but flilfer hairs or fpines are alfo continually vibrating, 

 with which it draws in all animate and inanimate fubftances. 



321. Vorticella Lacinulata. Fig. 45, Plate XXVI. 



Vorticella inverfe conica, apertura lobata, fetis binis cauda Ji- 

 bus. In (hape fomewhat of an inverted cone, the aperture 

 lobated, the tail fmall, and furnifhed with two brillles (d). 



The body is mufcular, pellucid, cylindrical, the apex about a 

 third part down, drawn into a little neck, the aperture or apex is 

 Jpread on both fides into a kind of flap or lappet, in the middle is 



a lit- 



