CLASSIFICATION OF ACTINIAKIA 275 



E. vas, Roiile, 1909, p. 13. 



E. dubia, Wass., 1908, p. 20, may be an Isotealia. 



IsoTEALiA, Carlgr., 1899, p. 24. 



Actiniidae with smooth wall and well-marked margin provided with 

 some sort of acrorhagi ; there may be cuticle. Sphincter well developed, 

 circumscribed. Tentacular longitudinal musculature ectodermal. 

 Retractors fairly developed or strong. Gonads absent on older mesen- 

 teries, or present on all save directives. 

 Species : 



I. antarctica, Carlgr., 1899, p. 2.5, and probably I. dubia, 

 Wass., 1908, p. 20. 



PsEUDOPHELLiA, Verr., 1899, p. 376. 



Actiniidae in which the scapus is covered with a thick soft cuticle, 

 the capitulum smooth and with parapet and fosse. There may be 

 brood-pits in the scapus. Sphincter circumscribed. Strong retractors. 



Species : 



P. arctica, Verr., 1868, p. 328 ; 1899, p. 376. 



This genus seems to be a sound member of the family, but 

 more details about it are desirable. 



BoLOCERA, Gosse, 1860, p. 185. 



Li pone ma, Hertw., 1882, p. 129. (See Hertwig, 1888, 

 p. 17; McMurrich, 1898, pp. 160 and 209; Carlgren, 

 1899, p. 39 ; Haddon, 1898, p. 429.) 



Actiniidae with smooth body (no verrucae or acrorhagi) and un- 

 specialized margin which may be tentaculate or have some sort of fold. 

 Tentacles provided with basal sphincters so that they are deciduous ; 

 they are variable in size and number, sometimes very large, at others 

 very numerous, or again neither unusually large nor numerous. Sphinc- 

 ter diffuse, may bs well developed, sometimes with one or more of its 

 processes predominating in size over the others, or with a tendency to 

 circumscription. Diffuse retractors. Gonads' may appear on the older 

 cycles, or these may be sterile. Tentacular longitudinal muscle ecto- 

 dermal. Perfect mesenteries variable in number ; sojuetimes all are 

 perfect. 



Species : 



B. tuediae, Jolmst., 'Mag. Nat. Hist.', v. 163. (See Gosse. 

 1860, p. 186 ; Walton, 1908, p. 215 ; St-phenson, 1918 b, p. 112.) 

 B. longicornis, Carlgr., 1891, p. 241. (See Carlgren, 1893, 

 p. 50 ; Stephenson, 1918 A, p. 20.) 



