CojiYNA. ZOOPHYTA. NUDA. 55S 
S04. P. gelatinosa. — Free, branched, tentacula circularly 
disposed. 
Tubularia gel. Pall. El. 85— Found along with the preceding. 
Height about two inches, tufted, shrubby ; stem dichotomously branched ; 
scarcely enlarging at the extremity ; polypi with a bell-shaped disc, the ten- 
tacula regularly disposed, and appearing as if webbed at the base ; mouth 
with a valve. 
NUDA. 
Gen. LXXIV. CORYNA— Base fixed, head clavate, with 
distributed tentacula, furnished with suckers. 
205. C. sqiiamata. — Stem simple, carneous, tentacula linear. 
Hydra squamata. Mull. Zool. Dan.— C. squam. (from Pall Spic. Zool. x, 
36. 41. t. iii. f. 9 — Tubularia affmis, Turt. Brit. Faun. 210. — Cor. 
squam. Lamarck^ Hist. ii. 62. Flem. Phil. Zool. ii. 616, t. v. f. 1— 
On fuci. 
Height about half an inch ; stem round, swelling into an ovate head, va- 
rying in form ; the mouth is sometimes truncated with a radiated disc ; the 
tentacula are from 5 to 15 in number, longer than the head over which they 
are distributed, and nearly of equal dimensions throughout ; the vesicles are 
globular, and adhering to the body, at the base of the tentacula, by a short 
footstalk. The whole colour is pink, with a dark medullary band. 
206. C. glandulosa. — Dichotomously branched, coriaceous, 
tentacula with globular heads. 
Tubularia Coryna, Turt. Brit. Faun, (from Pall. Spic. Zool. x. 40, t. iv. 
f. 8.) — Cor. gland. Lamarck^ Hist. ii. 62. Flem. Phil. Zool. 606, t. v. 
f. 2.— -On stones near low water-mark. 
Height nearly two inches, branches wrinkled, head lengthened, oval, 
mouth small ; tentacula thick, wrinkled, with globular heads, which adhere 
to the fingers when applied ; vesicles globular, sessile, scattered over the 
head ; colour tinged with pink, with a dark medullary band. 
We are inclined to consider the Coryna as one of the Tuhulariadm^ having 
a reduced sheath, and agreeing in the tentacular origin of the ovaria. The 
Plumatella^ on the other hand, probably belongs to the SertulariadcBy though 
its vesicular mode of reproduction has not been detected. 
Gen. LXXV. HYDRA. — Free, tentacula terminal, and dis- 
posed in a circle, and furnished with suckers. 
^ Inhahitmg fresh water. 
207. H. viridis. — Body linear, tentacula from six to twelve, 
about the length of the body. 
Polype verd, Trembley, Mem. 22, t. i. f. 1. — H. vir. and K. grisea, Linn. 
Syst. i. 1320. Ellis^ Cor. t. xxviii. f. C— Common on aquatic plants 
in shallow slow running streams. 
