694 



WORMS. INFUSORIA. 104. Brachionus. 



* Uncinates Bivalve; fhell unarmed and rounded at the tip, the bafe 1- 

 toothed : tail with -2 bridles. 

 Adams Microfc. p. 567. tab. 27. f. 55. 



Found in ditcb -water: pell rounded and capable of being 

 opened at both ends, the fore-part armed wiih a hook: tail 

 compofed of 4 or 5 points. 



*Mucrona~ Bivalve; fhell 2-toothed at the bafe and tip: tail with a 

 tus. double fpine. 



Mull Vertn. i. \ % p. 134. n. 146. 



Found in ftagnant water: rotatory organ mucronate in the mid- 

 dle: tail with moveable pellucid fpines: fhell cryftalline, 

 rather oblong, truncate both fides, 



Cemuus, With a hairy peduncle and drooping heads. 

 Pall. Spicil. Zool lo.tah.^.. f. 10. 

 Found in the lubularia fijlulofa. 



*$uadri- 

 dentatus. 



*CaIycifio~ Simple, calyculate, with the fhell crenate behind and the 

 rus. . upper lip of the mouth 4-toothed. 



Baker Microfc. p. 304. tab. I z.f, 4—6. 

 Found in various waters. 



\ 



Tub/fex. Shell tubular, punctured: body producing offspring in arj 

 oppofite direction : border lobed and ciliate. 

 Schcejf Monogr. 1755. tab. 

 Inhabits fbgnanfc waters : probably not of this Genus. 



Shell ventricofe, 4-toothed at the tip : rotatory organ dou- 

 ble: the bafe 2-horned: tail long, ending in 2 lhort 

 points. 

 Adams ■& Kanm. Micrcfc p 569. tab. 2j % f. 58. 

 Baker Mic. tab. 12. f. I 1 — 13. 

 Hermann* Naturf. 19. p. 47, tab. 2. f. 9. 



Inhabits ftagnsnt waters, and fwims with great fwiftnefs: pell 

 very pellucid, 



*Patina % Shell orbicular, unarmed, entire, with a double rotatory 

 organ and fhort fimple tail. 

 Hermann. Naturf. 19. $. 48. tab. 2. f. 10. 

 Eikhorn Naturg. Wafer m. tab. l.f. 2. 4. 

 Vorticella circularis. Shaw Nat. Mifc. tab. 199, 

 Found in ftagnaht waters filled with vegetables. 



IOCi 



