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Microscopical Essays, 



of the front margin hairy, the apex is formed by the fore-part, 

 projecting like the finger on a direction- p oft. It was found in 

 fait water. 



208. Trichoda S. 



Trichoda flriata, antice ciliata, extremitatibus in oppofitum 

 flexis. Striated trichoda, the fore-part ciliated, the extremities 

 bent in oppofite directions, 



A yellow animalculum, formed of two pellucid membranes, 

 fil iated longitudinally ; the lower end is obliquely truncated. 



209. Trichoda Navicula. 



Trichoda triquetra, antice truncata ciliata, poflice acuta promi- 

 nula. Three-cornered trichoda, the fore-part truncated and 

 ciliated, the hind-part acute, and bent a little upwards. 



It is cry Hall ine, rather broad, the under-fide towards the 

 hinder-part convex, the fore-part broad, the apex nearly a flrait 

 line, the bent end pointed and turned upwards ; it has a kind of 

 longitudinal keel running down the middle. 



210. Trichoda Succifa. 



Trichoda ovalis depreffa, margine crinito, poflice in crura in- 

 aequalia erofa. Flattened oval trichoda, the edge hairy, the 

 hinder-part hollowed out fo as to form two unequal legs. 



211. Tri- 



