122 



iindivided, snbaequal, filiform, very long. No tiibeicles on the edge 

 of the lipper disk. S. viduata. 



Dysactis M. Edw. Tentacles furniiug two distinct circles con- 

 tiiiuous at their base , those of llie inner row three tinies as long 

 as the oulher row , numeroiis, short and suLaeqnal. 31argin of disk 

 without tubercles. A. biserialis. 



B. Body stiidded niore or less with vcrruciforni liibercles or 

 siicking-glands (== Bunodidae Gosse). 



Crihrina Ehrbg. Body sUulded with glandulae , warts, irre- 

 gularly placed , suctorial , distributed over the whole surfaoe of the 

 body. Tentacles short, thick, obtiise, snbaequal, very numerous. Cr. 

 coriacea. 



Cerevs M. Edw. Body with glandulär warts placed in vcrti- 

 cal lines and unequal. Tentacles not numerous , chiefly marginal, 

 nuich spread and bent, conical, ralher stout; length about equal to 

 diameter of disk. A. gemmacea. 



Cyrtactis Th. Body rough, with sucking-glands in closse-set per- 

 pendicular ridges or vertical rows , and all equal, the whole height 

 of the body. Centre of disk niore raised than the edges. Disk grea- 

 ter in diameter than the pillar ot the body. Tentacles long, mode- 

 rately slender, generally horizontal to the disk, mostly marginal, their 

 tips constantly curied back. A. clavata- 



Heliactis Th. The glandulär warts placed only on the npper 

 portion of the body; tentacles very numerous, short, varying in 

 length, crowded towards the edge of the disk, and of moderate 

 thickness; oral disk mucli expanded. A. bellis. 



C. Body without glandulär warts, and with pores for the pas- 

 sage of thread-cells (= Sagartiadae Gosse). 



Actinoloha Bl. Skin soft; disk very large. Tentacles very nu- 

 merous, short, varying but little in length and fovming a thick fila- 

 mentous fringe ; margin of disk lobed. A. dianthus. 



Sagarlia Gosse. Skin coriaceous , occasionally wrinkled, firm 

 to the touch. Tentacles numerous, not partially long, retractile, ha- 

 ving great power of elongation. Base broad and circular. Body 

 cylindrical. Pores situated near the base and varying in size. Para- 

 sitic. A. parasitica. 



Adamsia Forb. Skin soft. Tentacles scarcely retractile , short. 

 Base when young circular, afterwards expanding laterally until the ex- 

 treme points meet and form a circle. Disk circular or oblong, ac- 

 cordiiig to the form of the base. Base secreting a horny membrane. 

 Body much depressed, not cylindrical. A. palliata. 



Ueber Actinia rosea n. sp. siehe Wright new Edinb. phil. 

 Journ. IV. p. 92. Ebendaselbst über Act. bellis var. fusca. 



