548 ZOOPHYTA. SERTULARIAD^. Campanularja. 



Gen. LXIX. CAMPANULARIA. — Cells bell-shaped, 

 supported on twisted footstalks ; tentacula numerous. 



* Stems simple. 



189- C. gemculata. — 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 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, 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. 210. 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. l. 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 Clytia 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. 



