ME. P. H. CAKPENTEE OX THE GENUS ACTINOMETEA. 



a7 



species of Comatula described by Miiller, who personally examined this collection. Last 

 autumn (1876) I was also able to examine it for myself, and thus to determine which 

 species should be removed from Miiller's genus ^feci^o and transferred to Act inome tree, in. 

 the sense in which this name is understood by Dr. Liitken and myself. 



In the following scheme all those species to which no note of interrogation and the 

 name of no authority is attached, have been determined by myself as Actinometrce, i. e. 

 as having an escentric mouth and a terminal comb on the oral pinnules. 



"With 10 arms. 



Actinometra. 



Second and third radials 

 united by a syzygy 

 Mouth radial. 



i 



Second and third radials 

 united by ligaments 

 only. Mouth ? 



Act. Solaris, Miill. 



Act. pectiyiata, Miill. 



Act. bracJiiolata. 



Com. purpuria ? 1. 

 I Com. rosea ? 

 yAct. rohusta, Liitken. 



Com. echinoptera ? 2. 



Com. vieridionalis? 3. 



L 



With more 



than 10 



arms. 



Second and 



third radials 



united by 



ligaments 



only. 



2 Distichals. f 3 palmars. 

 AsiUary has no ■< Axillary has a ^ Act. rotalaria, Miill. 4. 



syzygy- 



syzygy. 

 No palmars. 



2 palmars. ^ 

 Axillary has 

 no syzygy. 



r Act. polymorpha. 

 Mouth interradial. ■< Act. triclwptera. 



[ Act. WahlherrjJiii, MiiU. 

 l^ Mouth radial .... Act. fimbriata. 5. 



3 Distichals. 



Axillary has a -^ 



syzygy. 



2 palmars. 

 Axillary has 



a syzygy. 



3 palmars. 

 axillary has a 



syzygy. 



Act. miilirfida. 6. 



V Mouth interradial . Act. mtdtiradiata. 



r Act. parvicirra. 7. 

 ■< Act. polymorpha. 8. 

 \Act. Bennettii, Bohlsche. 



L 



Remaeks, 



1, I have not personally examined either C. purpurea or C. rosea. Miiller seemed to 

 tliink that the former might be a young condition of Act. Solaris^; so that it is most pro- 

 bably a true Actinometra. C. rosea, however, presents a difficulty ; for Miiller says 

 expressly^ that the first pinnules are not specially distinguished; but, except in this 

 point, he regarded it as very closely related to C. brachiolata, which is a true Acti- 

 nometra. 



' Gattung Comatula^ p. 13. 



= Ihid. p. 14. 



4.* 



