548 ZOOPHYTA. SERTULARIAD^. Campanularia. 
Gen. LXIX. CAMPANULARIA. — Cells bell-shaped, 
supported on twisted footstalks ; tentacula numerous. 
Stems simple. 
189. C. geniculata. — Stem free, flexuous, with bent subcla- 
vate joints ; cells alternate campanulate. 
Knotted Thread Coralline, Ellis.^ Cor. 22. t. xii. f. ] 9 — Sertularia gen. 
Linn. Syst. i. 1312. Pall. El. 117- Abild. Zool. Dan. t. cxvii. f. 1, 2, 
3. Lamarck., iii 120. — Laomedia gen. Lamour. Cor. Flex. 208.— -Com- 
mon on fuci within low-water mark. 
Hoot a creeping thread on the surface of fuci, giving rise to simple or 
slightly branched stems, seldom reaching 2 inches in height ; the joints are 
bent, and an enlargement at the summit supports the lengthened twisted 
foot stalk of a wide cell with an even margin ; the tentacula of the polypi are 
ciliated with hairs in whorls ; the vesicles are placed at the base of the foot 
stalks of the cells, above, on short stalks, and nearly of the same shape as the 
cells, truncated with a central, slightly tubular, orifice. 
190. G. dichotoma. — Stem free, dichotomously branched, 
joints linear ; cells alternate, campanulate. 
Sea Thread Coralline, Ellks., Cor. 21. t. xii. f. 18 — Sertularia dich. Linn. 
Syst. i. 1312 Sert. longissima, Pall. El. 119.— Camp. dich. Lamarck^ 
Hist. ii. 113. — Laomedia dich. Lamour. Cor. Flex. 207.— On old shells 
in deep water. 
Height about a foot ; stems numerous, arising from a tubular mass, slen- 
der, rigid, brown ; cells like the preceding ; vesicles ovate. — The Cymodocia 
simplex of M. Lamouroux (Cor. Flex. 21t>. t. vii. f. 2.) given him by the ce- 
lebrated botanist Dawson Turner, Esq. as found at Yarmouth, appears to 
have been established from an individual of this species in a depauperated 
state. 
191. C. volubilis. — Stem creeping, attached ; cells campanu- 
late, with denticulated margins. 
Small Climbing Coralline, Ellis., Cor.'24. t. xiv. f. 21. A.— Sertularia vol. 
Linn. Syst. i. 1311 — S. uniflora, Pall. El. 121 — Camp. vol. Lamarck., 
Hist. ii. 113.— Clytia vol. Lamour. Cor Flex. 202 — On corallines from 
deep water. 
Stem embracing other bodies, and sending out slender, twisted, free, foot- 
stalks, supporting wide bell-shaped cells. 
192. C. syringa. — Stem creeping, cells cylindrical, with en- 
tire margins. 
Small climbing Coralline, var. Ellis, Cor. 25. t. xiv. f. 21. B.— Sertularia 
syr. Linn. Syst. i. 1311 S. volubilis, Pall. El. 122 —Camp. syr. La- 
marck, ii. 113 Clyim syr. Lamour. Cor. Flex. 203.— On corallines 
from deep water. 
Stem embracing other bodies ; footstalks shorter than the preceding, the 
cells are narrower, and slightly truncated obliquely. 
Stem compound. 
193. C. dumosa. — Stem slightly branched, cells nearly ses- 
sile, cylindrical, and irregularly distributed. 
