CAMPANULARIADiE : CAMPANULARIA. 107 



ner. These are about half an inch in height, simple, zig-zag, and of 

 a pale horn colour ; and from every bend a cell originates alter- 

 nately from opposite sides. The stem is divided at regular inter- 

 vals, as in the other species ; but, instead of several rings or twists 

 above the origin of the cells, there is a small internodial joint ; and 

 the stalk of the cell, instead of being ringed, consists of two or three 

 unequal joints, much as they are formed in the genus Halecium, The 

 cell itself is of the normal thin hyaline texture, and bell-shaped; 

 but the rim is sinuated on the proximal margin, so that the aperture 

 resembles very much the mouth of a jug ; and it is this form that 

 peculiarly distinguishes the species, and suggested the specific name 

 to Mr. Saunders, Under the proximal side also there is a kind of 

 articulated process adnate to the cell and projecting a little beyond 

 the rim, — a structure analogous to that we observe in several species 

 of Plumularia, and not hitherto noticed in any species of Campanu- 

 lariada?. There were no vesicles in the specimens which I received 

 from Mr. Saunders. 



The species is allied to the Laomedea reptaiis of Lamouroux. The 

 polypes, according to Mr. Lister, have sixteen tentacula. The ovary 

 is ovate, truncate above and plain, enormously large as compared 

 with the cells. 



14. AMP ANUL ARIA,'" Lauiarck. 



Character. — Polypidom rooted, creeping or, when compound, 

 erect, the main tube filiform, continuous, giving off its peduncu- 

 lated cells irregularly or in whorls ; pedicles ringed, usually 

 long ; cells campanulate ; vesicles scattered^ sessile. Polypes 

 hydraform. 



* Stem a sins-le tube. 



1. C. voLUBiLis, stem creeping, filiform ; cells on long slen- 

 der annular pedicles, campaniform with a serrated rim ; vesicles 

 ovate, wrinkled concentrically. Ellis. 



Small climbing Coralline with bell-shaped cups, Ellis CoraO. 24, no. 21, pi. 14, fig. 

 a. A. Phil. Trans, xlviii. 629, pi. 22, no. 2. Phil. Trans, abridg. x. 491, pi. 12, 

 fig. 2, B. — Polyporum species, Bast. Opusc. Subs. i. p. 41, tab. 2, fig. 1, a, and fig. 

 7,6. — Sertularia volubilis, Z»«. Syst. 1311. Ellis and Solaml. Zooph. 51, pi. 4, 

 fig. c,/, E. F. copied into Kirhy^s Bridgew. Treat, i. pi. 2, fig. 2. Berk. Syn. i. 

 218. J^oSnV. Faun. Groenl. 444. Espcr Pflanz. Sert. tab. 30, fig. 1,2. Tint. 



* From Campanula, a bell. 



