The Actiniae ui the Plate CoUectioii. 291 



Genus Corynactis Allman, 1846. 



Corynactidae with simply capitate tentacles and with more than 

 one accessory tentacle corresponding to certain of the marginal 

 tentacles. 



It seems doubtful if tlie occurrence of but a Single accessory 

 tentacle over any one endocoel is a cliaracter of sufficient importance 

 to distinguish Corallimorpims from this genus, and this seems to be 

 tlie principal difference between the two. 



25. Corynactis carneci Studek. 



Corynactis carnea Studer, 1879. 

 Anemonia rariabilis McMußRiCH, 1893. 

 Anemonia carnea McMußRiCH, 1893. 



No. 252. Calbnco. Several specimens. 

 256. Calbuco. Several specimens. 

 539. Calbuco. 12 specimens. 



The types of this species have recently been carefully studied 

 by KwiETNiEwsKi (1896) and a comparison of the present forms with 

 his description show that they are identical. In 1893 I published 

 a description of specimens which were obtained by the U. S. Fish 

 Commission Steamer "Albatross" and were undoubtedly identical with 

 Stüder's species, bat, failing to observe the capitate nature of the 

 tentacles and their correct arrangement, I referred the specimens to 

 the genus Anemonia, at first as a distinct species A. variabilis and 

 later, after recognizing its identity with Studer's species, as A. 

 carnea. Kwietnievvski has shown that Studer was correct in re- 

 ferring his forms to the genus Corynactis and a further examination 

 of the "Albatross" specimens has demonstrated that they too are 

 true Corynactis. so that the names which I originally gave them 

 niust be regarded as Synonyms. 



The various individuals in the present collection vary somewhat 

 in the amount of contraction which they have undergone, although 

 in none of them are the tentacles completely concealed, and the 

 general form of the body varies a little also in accordance with the 

 amount of the contraction. Thus in some individuals the column is 

 almost cyliudrical, but more usually it is expanded in the upper 

 part and when fully expanded the disc is much wider than the 

 column. The base is of the adherent type, the specimens No. 252 



