598 



Microscopical Ess a y s. 



258. Trichoda Charon. Fig. 47 and 18, Plate XXVI. 



Trichoda cymbiformis fulcata, antice et poftice crinita. Boat- 

 Ihaped trichoda with furrows, the fore and hind-parts both 

 hairy. 



The body is oval ; it refembles a boat both in fhape and mo- 

 tion, the upper part hollowed, the under part furrowed and con- 

 vex, the item round, with feveral hairs projecting from it. 

 Several hairs mayalfo be feen on one fide. Was found in fait 

 water, a the head, b the tail ; d, Fig. 18, a pellucid bubble 

 that is fometimes to be perceived. 



259. Trichoda Cimex. Fig. 19, Plate XXXI. 



Trichoda ovalis, marginibus lucidis, antice et poftice crinita. 

 Oval trichoda, with a lucid margin, both the fore and hind-part 

 hairy. 



It is about the fize of the trichoda lynceus, an oval body, the 

 back convex, the belly flat, an incifion in the edge of the fore- 

 part ; the edges of this incifion are feen to move. Its interlines 

 are pellucid and ill-defined. 



It both fwims and walks. When it meets with any obftacles, 

 fourfmall briftles, which are fixed underneath, come into view ; 

 thefe it ufes as feet, a the hairs in the fore-part, b the briftles at 

 the hind-part, d the back, e two fmall projecting hairs.. 



260. Tri- 



