54 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



AnUdon carinata Tropwmetra indica. 



Antedon marginala SUphanometra marginata. 



Antedon indica Stephanometra indica. 



Antedon bella Cenometra hcrdmani. 



Antedon oheUi, sp. nov Lamprometra protectus. 



AnUdon reynawdi Eetemnutra reynaudii. 



Antedon anceps Eeterometra bengalensis. 



Antedon variipinna Eeterometra reynaudii. 



Actinonetra notata Comatclla stelligera. 



Actinometra multiradiata Capillaster multiradiata. 



{Comanthus annulata. 

 Comanthns parmcirra. 

 Comissia chadwicki. 



In 1005 Professor Bell recorded four species of comatulids from South Africa, 

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

 which they belong; the four species are: 



Antedon capenxis, sp. nov ... Tropiometra carinata. 



Antedon sclateri, sp. nov Pachylometra sclateri. 



Antedon magnicirra, sp. nov Crotalometra viagnicirra. 



Actinometra parvicirra Comanthus xvahlbergii. 



In 1905 also was pubUshed Wilhclm 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 "Basimrva," "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 interrclationsliips 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 Promacliocrinus into two 

 components {Promachocrinxf^ and Decametrocriniis) , but very iUogicaUy creates the 

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

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

 Carpenter; a new species of Promacliocrinus as restricted {P. vanhoffenianns; a 

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

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

 (having notliing to do with the pentremite genus Eleutherocrinus) , the stalked 

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



In in07 Dr. Hubert Lyman Clark recorded two comatuUds wliich had been 

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

 Barbour; these were: Tropiometra macrodiscv^ and Cyllometra manca {C. albo- 

 purpurea). 



In 1908 Mr. Chad wick pubhshed an account of a collection of coniatidids 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: 



AnUdon serripinna Prometra chadwicki. 



AnUdon parvipinna Iridometra legyptica. 



Antedon marginata tStephanometra marginata. 



Antedon imparipinna Lamprometra palmata. 



AnUdon palmata Lamprometra palmata. 



AnUdon savignifi Eeterometra savignii. 



