.MONOGRAPH OF THE EXISTING CRINOIDS. 31 



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

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

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

 omitted the subgeneric designation and referred the species unqualified!}- to 

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

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

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

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

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



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

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

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

 should have done, in favor of Comatula. In this, as in other things, he was followed 

 by P. II. Carp?ntcr. 



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



Comatula (Actinometra) Solaris Comatula Solaris. 



C. (Actinometra) rotalaria -. Comatula rotalariu. 



C. (Actinometra) wahlbergii Comanthus wahlbergii. 



C. (Alecto) echinoptera Comactinia echinoptcra. 



C. (Alecto) mediterranea Antedon meditcrranea. 



C. (Alecto) carinata Tropiometra carinata. 



C. (Alecto) milberti Amphimetra milberti. 



C. (Alecto) phalangium Leptometra phalangium. 



C. (Alecto) petasus Antedon petasus. 



C. (Alecto) sarsii Uathromelra sarsii. 



C. (Alecto) eschrichlii Heliometra glacialis. 



C. (Alecto) savignii Heterometra savignii. 



C. (Alecto) fimbriata Capillaster multiradiata. 



C. (Alecto) reynaudii Heterometra reynaudii. 



C. (Alecto) pari'icirra Comanthus panieirra. 



C. (Alecto) palmata. .. . . I Lam P 1 protects. 



(Lamprometra palmata. 



C. (Akcto) multiradiata. . . . Capillaster sentosa 



\ Capillastcr multiradiata. 



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



C. brachiolala Comatula brachiolata. 



C. milleri Antedon bifida. 



C. rosea Comatula brachiolata. 



C. adeonx Oligometrides adeonx. 



C. cumingii, sp. nov Comatula pectinata. 



C. elongata Dichrometra Jlagcllata. 



C. trichoptera : Comanthus trichoplera. 



C. macronema Ptilometra macronema. 



C. philibfrti Amphimetra philiberti. 



C. japonica Comanthus japonica. 



C. multifida Comaster multijida. 



C. timorensis Comanthus parvicirra. 



C. Jlagcllata Dichrometra Jlagcllata. 



C. novn'-guine:r Comaster norxguinex. 



C. bennetti Comanthus benin-tii. 



C. jacguinoti Amphimetra jacquinoli. 



C. tessellata. Amphimetra (?) tessellnta. 



