WORMS. INFUSORIA, 104. Bracliionus, 
€93 
ORDER V. INFUSORIA. 
Minute fimUe animalcules, Jeldom vijible to 
the naked eye. 
104. BRANCriIONUS. Body contradile, 
covered with a fliell, aud furniflied at 
the head with ciliate rotatorj^ organs. 
*^rceQlaris Bell-fhapcd, with the (hell many-toothed at the tip and 
rounded at the bale: tail long, bifid at the end. 
Sho’w hiatur, Mifcell. tab. 195. 
Baker Microfc p. tab. — to. 
Adams Microje. p. 568. tab. 21. f. 56 — 38. t. 27. 56, 57, 
Vorticella urceolans. Donov. Brit Inj. tab. ij.f. l, 2. 
Found frequently in ftagnant water, appearing to the naked eye 
as a Imall white fpcck : rotatory organ double, which it can 
protrude and conceal at pleafure. 
^»tella. Univalve, with the Ihell 2-tooihed at the tip and emargi- 
riatc at the bale: tail ending in 2 briltles. 
Joblot MicroJc. i, 2. tab. \. f. F. G ? 
Inhabits Itagnant water of Eurepe: Ihell flat, cryllaline, ovate- 
orbicular; head, trunk and tail diftinfl. 
'^ttiatus. Univalve, with an ovate llriate Ihell 6-toothed at the tip 
and entire at the bale ; without tail. 
Adams Micro/c. p. 364. tab. 27. f. 64, 65. 
In fait water: pellucid, cryilalhne, truncate on the fore- part and 
rounded behind : //fr// varying in form, with 12 longitudinal 
ribs, 
^‘’’fatus. Bivalve ; the lltell unarmed and abbreviated at the tip and 
2-horned at the bafe: tail long ending in 2 briltles. 
Jobtot bdicreji. 2. p. 54- tab. 6. f. ic. A — D. 
Innabits waters of Europe-, ventricofe and fubpellucid : fhell 
Ihorter tnan the body; bead conic and bearaed each fide: 
trank ovate. 
Bivalve : the Ihell unarmed at the top and 3-horned at the 
bafe: tail double. 
Aetams MicroJc. p 566. tab. 27. f. 59. 
Found in waters wjiich have been kept fometime, very pellucid 
and nearly triangular, with a double rotatory oigan, 
*Uucinatus, 
