Microscopical Essays. 571 



The body is bright, orbicular, with globular vifcera in the 

 middle of it ; in many a moveable fubitance, fomething like the 

 letter S. may be difcovered ; it has feldom more than feventeen 

 hairs, which are difpofed round the circumference ; each of them, 

 is in length nearly equal to the diameter of the animalculum. 



179. Trichoda Bomba, Fig. 67 and 68. 



Trichoda mutabilis, antice pilis fparfis. Changeable, with a 

 few hairs difperfed on the fore-part. 



It is larger than the trichoda granata, and of a yellow colour; 

 it is a thick animalculum, pellucid, and replete with a kind of 

 clay molecules ; it is very lively, moving about with fo much 

 velocity as to elude the fharpeft fight and moft pertinacious ob- 

 ferver, fometimes appearing fpherical, fometimes reniform, (kid- 

 ney-fhaped) fometimes as at Fig. 67. 



180. Trichoda Orbis. 



Trichoda orbicularis., antice emarginata crinita. Orbicular, 

 the fore- part notched and hairy. 



It in fome refpefts refembles the former, but is larger ; is orbi- 

 cular, fmooth, and pellucid, a little notched in the fore-part • 

 the hairs, which are longer than ufual, occupy this iricifion, the 

 reft of the margin has no hairs ; the whole is compofed 6f yeficu- 

 lar molecules. 



3 Z 2 ilJ Tri- 



