6 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



Tropiometra is equivalent to a part of Carpenter's Milberti group. 

 Heliometra (genotype Alecto eschrichtii J. Miiller, 1841) including 



Heliometra antarctica. Heliometra laodice. 



Heliometra asperrima. Heliometra magellanica. 



Heliometra brachymera. Heliometra mariae. 



Heliometra clio. Heliometra maxima. 



Heliometra eschrichtii. Heliometra perplexa. 



Heliometra glabra. Heliometra quadrata. 



Heliometra hondoensis. Heliometra rathbuni. 



Heliometra inexpectata. Heliometra rhomboidea. 



Heliometra juvenalis. Heliometra serratissima. 



Heliometra tanneri. 



Heliometra corresponds to the Eschrichti group of Carpenter. 

 Thysanometra (genotype Antedon tenelloides A. H. Clark, 1907) including 



Thysanometra tenelloides. 

 Psathyrometra (genotype Antedon fragilis A. H. Clark, 1907) including 



Psathyrometra bigradata. Psathyrometra erythrizon 



Psathyrometra fragilis. 



Zenometra (genotype Antedon columnaris P. H. Carpenter, 1881) including 



Zenometra columnaris. 

 Pontiometra (genotype Antedon andersoni P. H. Carpenter, 1889) including 



Pontiometra andersoni. 

 Himerometra (genotype Antedon crassipinna Hartlaub, 1890) including 



Himerometra abbotti. Himerometra flagellata. 



Himerometra affinis. Himerometra gyges. 



Himerometra anceps. Himerometra helianthus. 



Himerometra articulata. Himerometra imparipinna. 



Himerometra bella. Himerometra indica. 



Himerometra bengalensis. Himerometra klunzingeri. 



Himerometra bidens. Himerometra kraepelini. 



Himerometra bimaculata. Himerometra laevicirra. 



Himerometra brevicuneata. Himerometra ludoinci. 



Himerometra brockii. Himerometra marginata. 



Himerometra clemens. Himerometra martensi. 



Himerometra crassipinna. Himerometra milberti. 



Himerometra delicatissima. Himerometra monacantha. 



Himerometra doderleini. Himerometra nematodon. 



Himerometra elongata. Himerometra occulta. 



Himerometra emendatrix. Himerometra okelli. 



Himerometra erinacea. Himerometra oxyacantha. 



Himerometra finschii. Himerometra palmata. 



