42 University of California Publications. [Zoology 



Fam. BUNODACTIDAE Verrill, 1899. 



Bunodidae, Gosse, 1858. 

 Tealidae, Hertwig, 1882. 

 Crihrinidae, McMurrich, 1901. 



Actiniinae with adherent base, column usually tubercular, 

 strongly circumscribed endodermal sphincter, numerous perfect 

 mesenteries, no acontia. 



Gen. Bunodactis Verrill, 1899. i 



Cribrina (pars), Ehrenberg, 1834, p. 264. 



Bunodes, Gosse, 1855. 



Aegean, Gosse, 1865. 



Antliopleura, Duchassaing et Michelloti, 1860. 



Aulactinia, Verrill, 1862. 



Evactis, Verrill, 1869, p. 470. 



Bunodactis, Verrill, 1899, p. 42. 



Bunodella, Verrill, 1899, p. 43. 



Bunodosoma, Verrill, 1899, p. 44. 



Cribrina, McMurrich, 1901, p. 17. 



Bunodactidae with naked columns covered by rows of tu- 

 bercles ; tentacles simple, in several cycles ; collar with tubercu- 

 late margin, with or without acrorhagi ; numerous perfect mes- 

 enteries. 



I agree with McMurrich ( :01) that Evactis Verrill and Buno- 

 della Verrill are synonyms of Bunodactis {Cribrina McMurrich), 

 and that Aulactinia Verrill, Aegeon Gosse, and Bunodosoma Ver- 

 rill fall similarly under Anthopleura D. and M. For reasons 

 which follow^ the process of eliminating generic names has been 

 carried still farther in this paper by the union of Bunodactis and 

 Anthopleura. 



The single character which distinguishes Antliopleura from 

 Cribrina in McMurrich 's definition is the presence of true acro- 

 rhagi. In view of the variation of this character in the California 

 species, and the difficulty with which it is recognized in the pre- 

 served material, I feel that it is hardly worthy of generic rank. 

 Mc]\Iurrich ( :01, p. 36) has observed that the acrorhagi vary 

 much in distinctness. It is a common experience to find them, in 

 preserved specimens, so contracted and compressed that their 

 tubercular nature is often completely obscured. Even in life 



