54 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



Antedon carinata Tropiometra indica. 



Antedon marginata Stephanometra marginata. 



Antedon indica Stephanometra indica. 



Antedon bclla Cenometra herdmani. 



Antedon okelli, gp. nov Lamprometra protectus. 



Antedon reynaudi Beterometra reynaudii. 



Antedon anceps Heterometra bengalensis. 



Antedon variipinna Heterometra reynaudii. 



Actinometra notata Comatella stelligera. 



Actinometra multiradiata Capillaster multiradiata. 



(Comanthus annulata. 

 Actinometra parvicirra \ Comanthus parvicirra. 



[Comissia chadwicki. 



In 1905 Professor Bell recorded four species of comatulids from South Africa, 

 three of which he described as new, all in "groups" widely different from those in 

 which they belong; the four species are: 



Antedon capensis, sp. nov Tropiometra carinata. 



Antedon sclateri, sp. nov Pachylometra sclateri. 



Antedon magnicirra, sp. nov Crotalometra magnicirra. 



Actinometra parvicirra Comanthus wahlbergii. 



In 1905 also was published Wilhelm Minckert's important and instructive 

 treatise on autotomy and arm regeneration, with especial reference to the syzygy; 

 in this he proposed a new "group," the "Brevipinna group," to receive species from 

 the "Basicurva," "Spinifera," and "Granulifera" groups of Carpenter in which the 

 IIBr series are either 2 or 4 (3 + 4) indiscriminately; but he evidently had a very 

 hazy idea of the specific interrelationships of the forms within the group, as his 

 group type comprises at least four distinct species. In another paper published at 

 the same time he very rightly splits Carpenter's genus Promachocrinus into two 

 components (Promachocrinus and Decametrocrinus), but very illogically creates the 

 family Decametrocrinidse for their reception, or as an equivalent to the old genus 

 Promachocrinus, his final arrangement being little, if any, in advance of that of 

 Carpenter; a new species of Promachocrinus as restricted (P. vanhoffenianus; a 

 synonym of P. kerguelensis) is described, and the suggestion is made that the 

 comatulids be recognized as a distinct order under the name of Eleutherocrinoidea 

 (having nothing to do with the pentremite genus Eleutherocrinus) , the stalked 

 crinoids to be considered as representing another order, the Stylocrinoidea. 



In 1907 Dr. Hubert Lyman Clark recorded two comatulids which had been 

 obtained by Mr. Alan Owston off southern Japan and given by him to Mr. Thomas 

 Barbour; these were: Tropiometra macrodiscus and Cyllometra manca (C. albo- 

 purpurea) . 



In 1908 Mr. Chad wick published an account of a collection of comatulids brought 

 together by Mr. Cyril Crossland during Professor Herdman's biological survey of 

 the Sudanese Red Sea; in this paper six species are listed, as follows: 



Antedon serripinna Prometra chadwicki. 



Antedon parvipinna Iridometra segyptica. 



Antedon marginata IStepJianometra marginata. 



Antedon imparipinna Lamprometra palmata. 



Antedon palmata Lamprometra palmata. 



Antedon savignyi Heterometra savignii. 



