548 ZOOPHYTA. SERTULARIAD^. Campanhlaria. 



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. 19 — Sertularia gen. 

 Linn. Syst. i. 1312. Pall. El. 117- Abild. Zool. Dan. t. cxvii. f. 1, 2, 

 3. Lamarck, iii 1 20.— Laomedia gen. Lamour. Cor. Flex. 208. — Com- 

 mon on fuel within low-water mark. 

 Root a creeping thread on the surface of fuci, giving rise to simple or 

 slightly bi'anched 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, Ellis, 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. 21G. t. vii. fl 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. voluMlis. — 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.'-—'&tertt. creeping, cells cylindrical, with en- 

 tire margins. 



Small climbing Coralline, var. Ellis, Cor. 25. t. xiv. £ 21. B — Sertularia 



syr. Linn. Syst. i. 1311 S. volubilis, Pall. El. 122 —Camp. s^t. La. 



marck, ii. l"]3 Clytia syr. LawMmr. 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. 



