254 Dr. Johnston' s Catalogue of Zoophytes. 



Stem scarcely an inch in height, horny, tubular, wrinkled, filiform, irregularly branched ; 

 branches simple, erecto-patent, terminated with a rather large oval head of a reddish co- 

 lour, and studded round with prominent non -retractile tentacula, tipped with globular 

 apices. 



The stalk is annulated in the same manner as the pedicles of the cells in the genus 

 Campanularia are, and the tube filled with a pulpy substance or medulla which, receiving 

 a more complete developement towards the ends of the branches, forms the enlarged heads. 

 These have no terminal mouth, as Lamarck and others say, and as delineated in the figure 

 of the Encyclopedic but are completely covered by a continuation of the horny part of 

 the stem. The tentacula have a motion independent of one another ; and the whole head 

 is sometimes slightly bent. 



8. CAMPANULARIA. 



1. C. dumosa, bushy, irregularly branched ; branches erecto-patent, slightly tapered, un- 



equal, hispid with the cells, which are long, tubular, patent, almost sessile, with wide 

 entire apertures (tab. nost. xi. fig. 1.) 



C. dumosa, Flem. Brit. Anim. 548. 



Sertularia dumosa, Fleming in Edin. Phil. Journ. ii. 83. 



Tubularia tubifera, Johnston in Edin. Phil. Journ. xiii. 222, tab. iii. fig. 2 — 3 (young). 



Hab. Parasitical on corallines, crabs, stones, &c. ; very common in an immature state, 

 but perfect specimens are rare. 



Height three inches, generally much smaller. The branches appear to be square. The 

 cells arise on all sides directly from the stem and branches, and are irregularly alternate. 

 They can rarely be observed to be twisted at their insertions. 



2. C. gelatinosa, stem compound, dichotomously branched ; cells on twisted footstalks, 



campanulate, with even margins. 



C. gelatinosa, Flem. Brit. Anim. 549. 



Sertularia gelatinosa, Fleming in Edin. Phil. Journ. ii. 84. 



Corallina minor, Ellis, Corall. 23, t. xii. f. c. C. 



Hab. On stones between low and high-water marks in Berwick Bay. 



As met with on this coast, this coralline resembles exactly the figure of Ellis, which 

 on the authority of Ur. Fleming, I refer to his C. gelatinosa, although I have seen no 

 specimen like his own figure of the species in the Philosophy of Zoology, tab. v. fig. 3. It 

 is attached to stones by long branched tubular roots, which send up short and numerous 

 stalks, never exceeding an inch in height, branched, and jointed, with several rings at each 

 joint. From these arise the little ringed stalks that support the transparent bell-shaped 

 cells, in which the polypes are readily discernible. These have numerous filiform tentacula, 

 roughened with minute warts placed in whorls. The ovarian vesicles, produced abundantlv 

 in spring, also arise from the joints, are placed on much shorter stalks, are much larger, of 

 a tubular oval shape, and often half-filled with a mass of oviform bodies. 



