Sertulakia. Z. HYDROIDA. 131 



Corallina marina abietis forma, Rati, Syn. 35, no. 12. Bast. Opusc. 



Subs. 41, tab. '2, fig. 6 ; and tab. 7, fig. 1 — 3, pessimal Muscus ma- 



rinus major argute denticulatis, Plunk. Phytog. tab. 48, fig. 5. Raii, 



Hist. i. 78 Muscus maritimus filicis folio, Morris. Plant. Hist. iii. 



650. Uib. 9, fig. 1 Sta-fir, Ellis, Corall. 4, no. 2, pi. 1, fig. b. B. 



Sertularia abietina, Z(7i7i. Syst. 1307. Pall Elench. 133. Mull 



Zool. Dan. prod. 265. Ellis and Soland. Zoopli. 36. Berk. Syn. i. 

 216. Turt. Gniel. iv. 676. Blumenb. Man. 273. Wern. Mem. i. 564. 

 Turt. Brit. Faun. 212. Stew. Elem. ii. 441. Lam. Anim. s. Vert. ii. 

 116, 2de edit. ii. 141. Stark, Elem. ii. 440. Risso, L'Europ. merid- 

 V. 311. Lamour. Cor. Flex. 189. Corallina, 81. Bosc, Vers, iii. 106. 

 Hogg's Stock. 31. Johnston in Trans. Newe. Soc ii. 256. Templeton 



in Mag. Nat. Hist- be. 468 Dynamena abietina, Flem. Brit. Anim. 



543 La Sertularie sapinette, Bluinv. Actinolog. 480, pi. 83, fig. 6. 



Hah. On shells and stones in deep water, common. 

 " This elegant coralline is frequently found on our coast, adhering- 

 by its vermicular tubes to most kinds of shells : it grows very erect, 

 and is frequently infested with little minute shells called Serpulas." — 

 Ellis. Polypidom from 4 to 6 inches high, of a yellowish horn co- 

 lour, smooth and varnished, stout, regularly pinnate, the stem flat- 

 tened, slightly zigzag ; the branches rather close, linear, alternate, 

 bifarious, simple, or sometimes pinnated. Cells g-enerally semialter- 

 nate, rather small, bellied at the base with a narrow everted neck and 

 plain aperture, so as somewhat to resemble a Florence-flask. Vesicles 

 scattered, subsessile, proportionably small, smooth, ovate, with an 

 even shortly tubulous mouth : they are produced pi'incipally in the 

 winter season, when they are sometimes " in such abundance as al- 

 most to cover the denticles, but placed in a very regular order," El- 

 lis, and always on the upper edge of the branch from which they 

 originate. 



13. S. FILICULA, cells of the form of a Florence-flask^ opposite., 

 a single one in the axilla of each pinna ; vesicles pear-shaped^ 

 smooth^ the aperture shortly tubulous, entire. Hudson. * 



Plate XI. Fig-. 1, 1. 

 Sertularia filicula or Fern Coralline, Ellis and Soland. Zooph. 57, pi. 6, 

 fig. c, C. Turt. Gmel. iv. 681. Bosc, Vers, iii. 114. Turt. Brit. Faun. 

 215. Stew. Elem. ii. 445. Jameson in Wern. Mem. i. 564. Lam. 

 Anim. s. Vert. ii. 119. Lamour. Cor. Flex. 188. Corallina, 82. 

 Johnston in Trans. Newc. Soc. ii. 257. Hogg's Stockton, 32 S. 



• William Hudson, a London apothecary, elected F. R. S. in 1761 : the 

 author of the " Flora Anglica," the publication of which, in 1762, " marks the 

 establishment of Linnican principles of Botany in England, and their applica- 

 tion to practical use." — Sir J. E. Smith. 



