Microscopical Essays. 585 



Both extremities of the body are raifed, fo as to be convex at 

 bottom, the upper part deprefled like a boat ; fometimes the 

 whole body whirls about. It differs from itfelf at different ages. 

 Is found in an infufion of old grafs. 



218. Trichoda Paxillus. 



Trichoda linearis depreffa, antice truncata crinitaque, poftice 

 obtufa. Linear flat trichoda, the fore-part truncated and hairy, 

 the hinder-part obtufe. , 



A long animalculum, full of grey molecules, the fore-part ra- 

 ther fmaller than the hind-part, and furnifhed with minute hairs. 

 Was found in fait water. 



219, Trichoda Vermicularis. Fig. 1, Plate XXVI. 



Trichoda elongata, cylindracea, collo brevi, apice erinito. 

 Long cylindrical trichoda, with a fhort neck, the apex hairy. 



Gelatinous, the fore-part pellucid, the hind-part full of mole- 

 cules. It was found in river water. It is reprefented in different 

 appearances in the figure, a the neck, b the hairs, c a little 

 veficle in the hinder-part. 



.220. Trichoda Melitea. Fig. 2, Plate XXVI. 



Trichoda oblonga, ciliata, colli dilatabilis, apice globofo, pili- 

 fero. Oblong ciliated trichoda, with a dilatable neck, the apex 

 globular, and furrounded with hairs, the edge is ciliated, and a 



4 B kind 



