44 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



Antedon pumila Compsometra loveni. 



(Amphimetra milberti. 

 Antedon milberti I Amphimetra mdlleri. 



[Amphimetra discoidea. 



Antedon Ixvissima Amphimetra Ixvissima. 



Antedon tessellata (?) 



Antedon perspinosa Colobometra perspinosa. 



Antedon anceps Amphimetra anceps. 



Antedon variipinna Amphimetra crenulala. 



Tropiometra encrinus. 

 Tropiometra carinata. 

 Antedon carinata Tropiometra indica. 



Tropiometra audouini. 



Tropiometra picta. 



Antedon parvicirra Iridometra parvicirra. 



Antedon informis Decametra informis. 



Antedon loveni Colobometra perspinosa. 



The six following 10-armed species do not fall into any of the groups previously 

 given : 



Antedon bidens Oligomelrides adeonx. 



Antedon admnx Oligometrides adeonse. 



Antedon Izevipinna Amphimetra milberti. 



Antedon balanoides Balanometra balanoides. 



Antedon defecta Hypalometra dejecta. 



Antedon impinnata (?) 



Six other 10-armed species are mentioned by name, but are not discussed; 

 these are: 



Antedon armata Analcidometra armata. 



Antedon brevipinna (?) 



Antedon columnaris Zenometra columnaris. 



Antedon cubensis Antedon cubensis. 



Antedon duplex Horxometra duplex. 



Antedon hageni Coccometra hagenii. 



SERIES III. 

 " Spinifera group." 



tPtilometra macronema. 

 Antedon macronema i _,., ..,, . 



TPtilometra miillen. 



Antedon quinquecostata Stenometra quinquecostata. 



Antedon spinifera Stylometra spinifera. 



Antedon duplex Horxometra duplex. 



Antedon lusitanica Thalassometra lusitanica. 



Antedon flexilis Pachylometraflexilis. 



Antedon patula Pachylometra patula. 



Antedon robusta Pachylometra robusta. 



Antedon pourtalesi Crinometra granulifera. 



Antedon brevipinna Crinometra brevipinna. 



(Parametra compressa. 

 Antedon compressa ( _ , . , 



\Parametra granulifera. 



