218 L e u c k a r t : Bericht über «Jie Leistungen in der IVainrgescliichte 



undivided, subaeqiial, filiform, very long. Ko tiibercles on the edge 

 of the Upper disk. S. viduata. 



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

 tinuoiis at their base , those of the inner row three times as long 

 as the outher row , numerous, short and subaequal. Margin of disk 

 without tubercles. A. biserialis. 



B. Body studded niore or less with verruciform tubercles or 

 sucking-glands (= Bunodidae Gosse). 



Crihrina Ehrbg. Body studded with glandulae , warts, iire- 

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

 body. Tentacles short, thick, obtuse, subaequal, very numerous. Cr. 

 coriacea. 



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

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

 niuch spread and beut, conical, rather stout; length {\bout equal to 

 dianieter of disk. A. gemniacea. 



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 more raised than the edges. Disk grea- 

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

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

 tips constantly curled back. A. clavata- 



Heliactis Th, The glandulär warts placed only on the upper 

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

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

 thickness ; oral disk much expanded. A. bellis. 



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

 sage of thread-cells (= Sagartiadae Gosse). 



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

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

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



Sagartia Gosse. Skin coriaceous , occasionally wrinkled, firm 

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

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

 cylindrical. Tores 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 lalerally until Ihe ex- 

 treme points meet aud form a rircle. Disk circular or oblong, ac- 

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

 Body much depressed, not cylindrical. A. palliata. 



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

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



