-Microscopical Essays. 



3S2. Brachionus Patina. 



Brachionus univalvis, tefta orbiculari integra, cauda mutica, 

 U nival vcd brachionus, with an orbicular (hell, the edges regular, 

 and having a long beardlefs tail. 



This animalculum is large, the (hell cryftalline, nearly circular, 

 without any teeth or incifion, though towards the apex it rather 

 falls in, fo as to form a fmooth notch. This little creature is re- 

 markably bright or fplendid ; it is affixed to the middle of the 

 fhell ; it projects from the apex a double glittering organ, the 

 edges of which are ciliated ; both thefe organs are of a conical 

 figure, and ftand as it were upon a pellucid fubftance, which is 

 divided into two lobes ; between thefe lobes and the rotatory in- 

 ftrument there is a filver-coloured crenulated membrane ; two 

 fmall claws may be difcovered near the mouth and other organ- 

 ized parts. 



363. Brachionus Clypeatus. 



Brachionus univalvis, tefta oblonga, apice emarginata, bafi 

 integra, cauda mutica. Univalved brachionus, the fhell oblong, 

 the apex notched, the bafe fmooth, the tail naked. 



364. Brachionus Lamellaris. 



Brachionus univalvis, tefta produ&a, apice integra, bafi tri- 

 corni, cauda bipili. Univalved brachionus, the fhell extending 



confider- 



