CLASSIFICATION OF ACTINIARIA 303 



method of increase. The individuals are very variable in form, often 

 trumpet shaped in expansion, and more or less retractile. The tentacles 

 are knobbed, the outer larger than the inner, and the exocoelic tentacles 

 largest of all. Some or all of the endocoels have more than one tentacle 

 connected with them. Tentacle-heads usually with large sting-cells and 

 little or no muscle, shafts Avith ectodermal longitudinal muscle. Perhaps 

 very weak ectodermal muscle in the body-wall. Sphincter absent or 

 weak diffuse. 

 Species : 



C. viridis, AUm., 1846, p. 417. (See Gosse, 1860, p. 289, and 



Rees, 1915, p. 543.) 



C. globulifera, Ehr., 1834, p. 39. (See Carlgren, 1900, p. 20, 



and Haddon, 1898, p. 467.) (?C. hoplites, H. and S., 1893, 



p. 118.) 



C. myrcia, D. and M., 1866, p. 124. (See Duerden, 1900, p. 181.) 



C. carnea, Studer, 1879, p. 542. (See McMurrich, 1904, and 



Kwietniewski, 1896.) 

 C. australis, H. and Duerden, 1896, p. 151. 

 C . h a d d o n i , Farquhar, 1 898, p. 532. (See Stuckey, 1 909, p. 390. ) 

 C. mollis, Farquhar, 1898, p. 534. (See Stuckey, 1909, p. 390.) 

 C. gracilis, Farquhar, 1898, p. 534. (See Stuckey, 1909, p. 390.) 

 C. albida, Stuckey, 1909, p. 390. 

 And perhaps others. 



Possibly haddoni, mollis, gracilis, and albida 

 are all one species. 



Family 2. Discosomidae, sens, strict. 



Discosomidae as used by various authors, pro parte. 

 Used here in the sense taken by Carlgren, 1900, p. 58. 

 Including Phialactidae, Fowler, 1889. 



Khodactidae, Andres, as used bj'" Haddon, 1898, p. 476, 

 pro parte. 



Size vai'iable. Living singly or in patches. With one or more mouths. 

 Sphincter absent or weak diffuse. Tentacles simple or dendritic (see 

 Part II, Text-fig. 14, b, c) or somewhat capitate or curious and urn-like, 

 or reduced to warts (see Part II, Text-fig. 3), or to little or nothing, 

 so that they do not show above the surface of the disc at all ; more than 

 one sort may occur in the same species, and more than one may com- 

 municate with endocoels and exocoels or with endocoels only, there 

 being often radial rows. Presence of ectodermal muscle in body-wall 

 doubtful. 



