MONOGRAPH OF THE EXISTING CRINOIDS. 51 



Actinometra simplex Comatella maculata. 



Actinometra duplex Comanthina schlegclii. 



Actinometra maculata Comatella stelligera. 



Actinomelra rotalaria Comanthus parvicirra. 



Actinometra regalis Comaster multibrachiata. 



Actinometra peregrina, ep. nov Comissia peregrina. 



NORTHWEST AUSTRALIA. 



(Amphimetra discoidea. 

 Antedon milberti \0ligometracarpenteri. 



Antedon serripinna Oligometra carpenteri. 



Antedon variipinna Amphimetra crenulata. 



Antedon, sp. ("near macronema ") Cenometra cornuta. 



IComatula pectinala. 



Ai'liniiiiiilni iicrtiiuita 1 



IComatula purpurea. 



Actinometra nobilis Comaster belli. 



Actinometra paucicirra Comatula rotalaria. 



IComatula pectinata. 



Actinometra parncirra i ,. . . . 



(.Comantheria bnareus. 



Actinometra variabilis Comanthus parvicirra. 



Actinometra multifida.. . 



\Comantrnna belli. 



Actinometra multiradiata Capillaster multiradiata. 



ARAPURA AND BANDA SEAS. 

 Actinometra maculata Comatella maculata. 



In 1895 Dr. Clemens Hartlaub published a paper on some comatulids from 

 the Bay of Panama, the first definitely known from the eastern Pacific, announcing 

 the important discovery of Florometra (Carpenter's "Eschrichti group" of Ante- 

 don) within the tropics, and extending the known range of one species of that 

 genus (Florometra magellanica) from the Straits of Magellan to Panama; at the 

 same time he described a new species of Florometra from Panama, and three spe- 

 cies of other genera from the Galapagos Islands; in an appendix he described a 

 new Lamprometra from Gaspard Strait, between Banka and Billeton. The species 

 mentioned by him are : 



Antedon agassizii. sp. nov Thalassometra agassizii. 



Antedon rhomboidea Florometra magellanica. 



Antedon tanneri, sp. nov Florometra tanneri. 



Antedon parvula, sp. nov Thaumatometra parvula. 



Antedon bigradata, sp. nov Psathyronutra bigradata. 



Antedon, sp Trichometra, sp. 



Antedon, sp Psathyrometra, sp. 



Antedon subtilis, sp. nov Lampromttra subtilis. 



In this paper Hartlaub suggests the following arrangement of the comatulids: 



I. Series I. Species with plated ambulacra: 

 (a) The two outer railials articulated. 



Ten arms . . . . \"Basicurva group." 



I" A ca- la group. " 



Two distichals "Spinifcra group." 



Three distichals ''Granulifera group." 



(6) The two outer radials united by syzygy ' Elegans group." 



