MONOGRAPH OF THE EXISHJSTG CEINOIDS. 31 



employed as a general term to cover all species; if he could make out with cer- 

 tainty the arrangement of the ambulacra, he inserted Alecto or Actinometra, as the 

 case happened to be, between Camatula and the specific name; if he could not, he 

 omitted the subgeneric designation and referred the species unqualifiedly to 

 Comatula. Some idea of the difficulties which lie encountered (undoubtedly largely 

 through differences in the state of preservation and consequent different degrees of 

 distortion of the soft parts of the specimens examined by him) may be gathered from 

 the fact that he placed a single species, Comanihus parmelrra, both in Actinometra 

 (twice) and in Alecto, and also in the incertse. sedis under Comatula. 



In the course of liis studies Miiller had discovered that his Actinometra impe- 

 rialis was identical with Lamarck's Comatula solans; but while he dropped the spe- 

 cific name imperialis he still clung to his Actinometra, not relinquishing it, as he 

 should have done, hi favor of Comatula. In tliis, as in other thuigs, he was followed 

 by P. H. Carp?nter. 



Miiller's final arrangement of the comatulids was as follows : 



Comatula (Actinometra) Solaris Comatula Solaris. 



C. (Actinometra) rotalaria Conmtula rotalaria. 



C. (Actinometra) wahlhergii Comanthus uahlbergii. 



C. (Alecto) echinoptera Comactinia echinoptera. 



C. (Alecto) Tnediterranm Antedon mediterranea. 



C. (Alecto) carinata Tropiometra carinata. 



C. (Alecto) milberti Amphimetra milberti. 



C. (Alecto) phalangium Leptometra phalangium. 



C. (Alecto) petasus... Antedon petasus. 



C. (Alecto) sarsii , Hathrometra sarsii. 



C. (Alecto) eschrichtii Heliometra glacialis. 



C. (Alecto) savignii Heterometra savignii. 



C. (Alecto) fivihriata Capillaster multiradiata. 



C. (Alecto) reynaudii Heterometra reynaudii. 



C. (Alecto) parvidrra Comanthus parvicirra. 



I Lamprometra protectus. 



C. (Alecto) palmata ■ ■■ [lamprometra palmate. 



\Capillaster sentosa. 

 C. (AUcto) multiradiata | Capillaster multiradiata. 



C. (Alecto) articulata, sp. nov Liparometra articulata. 



C. brachiolata Comatula brachiolata. 



C. milleri Antedon bifida. 



C. rosea Comatula bracliiolata. 



C. adeonx Oligometrides adeome. 



C. eumingii, sp. nov Comatula pectinata. 



C. elongata Diclirometraflagcllata. 



C. trichoptera Comanthus trichoptera. 



C macronema Plilometra macronema. 



C. philiberti Amphimetra philiherti. 



C. japonica Comanthus japonica. 



C. multifida Comaster multifida. 



C. timorensis Comanthus parvicirra. 



C.flagellata Dichrometrafiagellata. 



C. novx-guinex Comaster novxguinex. 



C. bennelti Comanthus bennetti. 



C. jacquinoti Amphimetra jacquinoti. 



C. tessellata Amphimetra (?) tessellala. 



