ASTR^EACEA. SAGARTIADJS. 



THE CAVE-DWELLING ANEMONE. 



Sagartia troglodytes. 

 Plate I. fig. 3 : 11. fig. 5 : III. figs. 1, 2 : Y.fig. 5. 



Specific Character. Tentacles barred transversely ; marked at their foot 

 with a black character resembling the Roman letter B. 



Actinia viduata. Johnston, Mag. Nat. Hist. viii. 82. fig. 13. 



E. Forbes, Ann. Nat. Hist. iii. 48. Couch, 

 Corn. Fauna; iii. 75 (nee Miiller). 

 mesembryanthemum, var. £. Johnston, Brit. Zooph. Ed. i. 211. 

 troglodytes. Johnston (after Price), Brit. Zooph. Ed. 2. 



216. fig. 47. Cocks, Rep. Cornw. Polyt. Soc. 

 1851. 6. pi. i. fig. 16. 

 ? elegans. Dalyell, Anim. of Scotl. 226 ; pi. xlvii. fig. 9. 



? explorator. Ibid. Ibid. 227; pi. xlvi. fig. 11. 



Sagartia troglodytes. Gosse, Linn. Trans, xxi. 274 : Tenby, 365 : 



Manual Mar. Zool. i. 28 : Annals, N. H. 

 Ser. 3. i. 416. 

 aurora. Ibid. Ann. N. H. Ser. 2. xiv. 280 : Tenby, 



356 (Frontispiece). 

 Scolanthus sphairoides. Holdsworth, Proc. Zool. Soc. 1855. pi. v. 



figs. 1—3. 



GENERAL DESCRIPTION. 



Form. 



Ease. Adherent to holes in rocks, frequently detached : somewhat 

 exceeding the column. 



Column. Smooth towards the base, but beset on the upper two-thirds 

 with suckers, which have a strong power of adhesion. Substance firmly 

 fleshy. Form cylindrical and much lengthened, in full extension, the 

 height many times exceeding the diameter. Margin tentaculate. 



Disk. Flat or slightly concave : the margin rarely undulate. Outline 

 circular. Radii strongly marked, and crossed by close-set transverse striae. 



Tentacles. Numerous (amounting to two hundred or upwards in some 

 specimens), arranged in four or five rows ; the first row largest, and 

 decreasing gradually to the outermost ; in extension about as long as the 

 width of the disk, conical, bluntly pointed. The manner in which they 

 are carried varies in the different varieties. 



Mouth. Generally elevated on a cone. 



