306 T. A. STEPHENSON 



AcTiNOTRYx, D. and M., 1860, p. 321. (Soc Duorden, 1898, 

 p. 635, &c.) 



Discosoiixidae which may occur in scores together, crowded so as to 

 form a carpet, and some individuals have two or more mouths. More 

 or less retractile. There are simple or nearly simple tentacles or tenta- 

 culiform outgrowths connected with the margin ; within these is a well- 

 mai'ked clear zone, then the main part of the disc has dendrites, some at 

 least in radial rows. Sphincter absent or weak diffuse. (For details 

 of an Actinotryx see Part II, Text-figs. 14, B and c, 4, D, and 6, a.) 

 Species : 



A. sancti-thomae, D. and M., 1860, p. 45. (See Duerden, 



1900, p. 148; McMurrich. 1889, ' Journ. Morph.') 

 A. bryoides, H. and S., 1893, p. 121 ; Haddon, 1898, p. 479. 

 And probably others. 



2, Appendix. 



There are some anemones recently described by Professor 

 Gravier, whos(^ papers I did not know about, unfortunately, 

 when Part I of this paper was written, and which should be 

 mentioned now. I am at the same time giving a few further 

 details which seem worthy of note about some of Verrill's 

 genera which can hardly be finally allocated yet, but are interest- 

 ing as showing the direction which some future work should 

 take to clear them u}). I regret that by a mischance I over- 

 looked the genus Euphellia of Pax before, and that also 

 is included here, together with a few other points. 



(i) P r f e s s o r G r a \- i e r ' s for m s . 



Professor Gra.^■ier has established five new genera and some 

 new species, as follows : 



1. Nectactis (1918, p. 18). N. singularis, 1918, p. 18. 



This has the form of a disc thicker in the middle than at the edge, 

 where the capitate tentacles are, the lower surface of it representing the 

 column and having a little pit-like base in its middle. Smooth wall and 

 no sphincter, A good many mesenteries with indiscernible muscles. 



It is very difficult to even suggest a position for this form in classifica- 

 tion. Gravier suggests Minyadidae, but it would not do for that family 

 as understood here. If there were disc-tentacles one might suggest 

 CoraUimorphidae, and possibly that would be best even without them — 

 but more details are needed. 



