Antiiea. Z. HELIANTHOIDA. 221 



1. A. Cere us, body someichat ci/lindrkal, furrowed length- 

 loays ; tentacula numerous, longer than the body, smooth. Dr 

 Gsertner. 



Hydra tentaculis denudatis, numerossimis ; corpore longitudinaliter sulca- 



to, Gcertner'm Phil. Trans, lii. 78, tab. 1. fig. 1 Act. Cereus, Ellis 



and Soland. Zooph. 2. Turt. Gmel. iv. 103. Turt. Br. Faun. 131. 



Rapp, Polyp. 56, tab- 2, fig. 3 Act. sulcata, Pen. Brit. Zool. iv. 



102. Berk. S}7i. i. 18G. Stew. Elem. i. 394. Flem. Brit. Anim. 498. 



Lum. Anim. s. Vert. iii. 69. Bosc, Vers, ii. 257 Hydra Cereus, 



Stew. Elcm. ii. 4.51. 

 Hab. " Very frequent upon the sea- coasts" of Cornwall, Gcertner. 

 Anglesey, Pennant. Torquay, Dr Coldstream. 



" The body of this polype is of a light chesnut colour, and feels 

 perfectly smooth, though it be lengthways sulcated by a number of 

 sulci, that are frequently divided into three smaller ones, and are 

 continued into the dentated margin that surrounds the upper peri- 

 phery of the body, just beneath the insertion of the feelers. These 

 feelers, arising from the disk of the polype, are, according to the age 

 of the animal, between 120 and 200 in number ; they exceed the 

 body, when expanded, by more than an inch in length, and are of a 

 beautiful sea-green colour, except towards their extremities, which 

 are coloured with a lively red, like that of the rose. The disk is of the 

 same brown colour with the rest of the body, and contains in its cen- 

 tre the mouth of the animal, which is an aperture of various shape 



and diameter. The two varieties of this species, which I met 



with, differ but little from the already described animal. The feelers 

 of the one, instead of being green, are throughout of a red colour, 

 like that of the mahogany wood. The other variety has pale ash- 

 coloured feelers, marked with a small white line running along their 

 back ; its body is of the same chesnut coloiar with that of the first 

 species ; but the sulci are not divided, nor has it a dentated margin 

 surrounding its upper periphery." Gartner. The Act. sul- 

 cata of Templeton, which he says is " most probably the young" of 

 Actinia effceta, Mag. Nat. Hist. ix. 303, can scarcely belong to this 

 species. 



2. A. TuEDiiE, body sometohat cylindrical, smooth or wrink- 

 led with circular folds; tentacida numerous, shorter than the 

 body, lonyifudinally striate. G. J. 



