258 Dr. Johnston's Catalogue of Zoophytes. 



6. S. rosacea, stem erect, thinly branched bifariously ; branches alternate ; cells opposite, 



tubular, everted ; aperture not constricted, entire ; ovarian vesicles crowned with little 

 spines. Lily-flowering Coralline. 

 S. rosacea, Linn.; Soland. Zooph. 39; Turt. Lin. iv. 676; Turt. Br. Faun. 212; Stew. 



Elem. ii. 440 ; Lam. Hist. Nat. ii. 119 ; Bosc, Vers, iii. 105 ; Hoggs Stockton 32. 

 Dynamena rosacea, Lamour. Corall. 79; Flem. Br. Anim. 544. 

 Lily or Pomegranate-flowering Coralline, Ellis, Corall. 8, t. 4, No. 7. 

 Hab. Parasitical on corallines, rare on this coast. 



An inch in height, white, pellucid ; the cells are cylindrical with oblique apertures. — 

 " The vessicles, when magnified, are shaped like a Lily or Pomegranate flower, just open- 

 ing ; and appear more like a blossom, than any belonging to the whole tribe of corallines." 

 —Ellis. 



7. S. operculata, tufted; shoots slender, irregularly branched; branches erecto-patent, 



straight; cells opposite, inversely conical, the aperture obliquely truncate, acutely 

 pointed, with two acute lateral teeth. Sea-Hair Coralline (tab. nost. xi. fig. 2.). 

 S. operculata, Linn.; Soland. Zooph. 39; Turt. Lin. iv. 676 ; Turt. Br. Faun. 212 ; 

 Steiu. Elem. ii. 441 ; Lam. Hist. Nat. ii. 118 ; Bosc, Vers, iii. 106 ; Hogg's Stockton 32. 

 Dynamena operculata, Lamour. Corall. 78; Flem. Br. Anim. 544. 

 Sea Hair, Ellis Corall. 8, t. iii. No. 6, f. b. 

 Corallina minus ramosa, Raii Syn. 35, No. 13, t. 2, f. 4. 

 Hab. Parasitical on Fuci, particularly on the stalks of Laminaria digitata. 

 Grows in tufts from two to four inches high. The shoots are slender and neat, bearing 

 cells throughout, which are exactly opposite. The outer angle of the external edge of the 

 aperture is produced into an acute point, and there is a sharp tooth on each side, which is 

 omitted in the otherwise admirable figure of Ellis, although it could not escape his 

 observation. See the Nat. Hist, of Zoophytes, p. 39. I find the ovarium vesicles very 

 abundantly produced in winter; they are irregularly scattered on the branches, egg-shaped, 

 the top being often covered with a sort of rounded operculum. 



8. S. argentea, solitary; stem free, erect, straight, percurrent, compound; branches alter- 

 nate, dichotomously divided, short and spreading ; cells opposite or semi-alternate, 

 flask shaped, everted, with an obliquely truncated aperture. Squirrel s-tail Coralline 

 (tab. nost. xi. fig. 4). 

 S. argentea, Linn. ; Soland. Zooph. 38 ; Turt. Lin. iv. 677 ; Turt. Brit. Faun. 213 ; Stew. 

 Elem. ii. 442; Lam. Hist. Nat. ii. 117; Lamour. Corall. 84; Bosc, Vers, iii. 108; 

 Hogg's Stockton 32. 

 Dynamenta argentea, Flem. Brit. Anim. 544. 

 Squirrel's-tail, Ellis, Corall. 6, t. ii. No. 4, f. c. 

 Corallina muscosa, Raii Syn. 36, No. 17. 

 Hab. In deep water. Among sea refuse, not uncommon. 



This elegant coralline, when perfect, is a span in height, and the branches are so dispos- 

 ed as to make its comparison to a Squirrel's-tail by no means (.inappropriate. Stem simple, 



