692 WORMS. ZOOPHYTA. 103: Hydra. 
*Grifa. With about 7 tentacula longer than the body. 
Adams & Kenm. Microfe. b. 364, tab. 21. f. 6. 
Philof, Tranfad. 57. b. 430. tab. 9. ! 
Trembley Polyp. 1. p. 22. tab, 1. f. 2. 
Baker Microft. tab. 7. f 4—7. 
Ledermulter Microjc. tab. 67. m. 
Roef Inf. 3- polyp. p. 473. tab. 78—83, 
Inhabits rivulets and ftagnant waters; yellowifh, tapering to- 
wards the bafe, with fometimes 12 arms or tentacula. ' 
Palins, With about 6 tentacula as long as the body. 
Roej. Inf, 3. polvp. p. 465. tab. 76, 77. 
Inhabits clear waters of Europe, but not fo common as the others; 
body pale yellowifh, tapering towards the baile, very tender, 
with whitifh tentacula or arms. 
ORDER 
