Microscopical Essays, 



367. Brachionus Plicatilis. 



Brachionus univalvis, tefta oblonga, apice crenulata, bafi 

 emarginata. Univalved brachionus, with an oblong {hell, the 

 apex hairy, the bafe notched. 



368. Brachionus Ovalis. 



Brachionus bivalvis, tefta deprefla, apice emarginata, bafi in- 

 cifa, cauda cirro duplici, Bivalved brachionus, with a flattened 

 {hell, the apex notched, a hollow part at the bafe, the tail form- 

 ed of two tufts of hair. 



369. Brachionus Tripos. Fig. 59, Plate XXVI. 



Brachionus bivalvis, tefta apice mutica, bafi tricorni, cauda 

 duplici. Bivalved, the apex of the {hell beardlefs, three horns at 

 the bafe, double tail. 



The body is pellucid, nearly triangular, bivalved, open on the 

 back of the animalculum ; from the orifice two little laminae pro- 

 ceed, that are larger than the rotatory cilia ; at the bottom are 

 three or four fliff points e f a, and a moveable tail (g) between 

 them, divided into two filaments, which the little creature opens 

 and {huts at pleafure ; by thefe it fixes itfelf to obje&s. a the late- 

 ral cilia, b two fmall laminae, c a deglutatory mufcle, e an opake 

 mafs. 



370. Bra- 



647 



