292 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



Andromctra psyche. Psathyrometra iorealis. 



'2'hysaiiometra tenelloules. Psathyrometra frayUis. 



Coccometra hagenii. Psathyrometra antarctica. 



Erythrometra ruher. Psathyrometra yraeilUma. 



Eii/thrometra austraUs. Eumorphometra concinna. 



Heliometra maxima. Leptometra celtica. 



Helionnetra glacialis. Isomstra vivipara. 



Anthometra adriani. Sathrometra prolixa. 



Florometra mariw. Fariometra cxplicuta. 



Florometra laodice. Trichometra cuhensis. 



Florometra aspcrrima. Trichometra vexator. 



Florometra serratissima. Thaumatometra niitrix. 



Florometra magellanica. Thawimtocrinus horealis. 



Cyclometra clio. Pentametrocrinus japonicus. 



Sarametra triserialis, Pentametrocrinus rarians. 

 Zenometra columnarig. 

 a'. Spicules are present in tlie tentacles, or the tip is protected by a more or less developed iilate. 

 6'. Tip of tlie tentacles naked and unprotected, 

 c'. Spicules irregularly scattered. 



d\ Spicules not localized, and few in number. 



Neocomatella pvlcheVn. Comatula pcctinata. 



Neocomatella alata. Comaster minimus. 



(!'. Spicules more or less definitely localized. 



e^. Spicules confined to the proximal portion of the tentacle. 

 f. Spicules few in number. 



Comantheria briareus. Prometra chadwicki. 



Comnnthus wahlhergii. OUgometra serripinua. 



Comanthus parvicirra. Tropiometra mccrodiscus. 



Zygometra comata. Tropiometra indica. 



Catoptometra hartlaubi. Compsometra lovini. 



Oxymetra finschii. Coccometra hagenii. 



Dichrometra doderlei/ni. Leptometra celteia. 



Lampromctra palmata. Isometra vivipara. 



Cenometra unicornis. Hathrometra proli.xa. 



Cyllometra disciformis. Hathrometra tenella. 



Cyllometra albopurpurea. Thaumatocrinus riigosus. 



Decametra tigrina. 



f. Spicules numerous. 



Comatilia iridometriformis. 



e'. Spicules occurring only in the distal portion of the tentacle. 



Oceanometra gigantea. 



c'. Spicules arranged in broad bands. 



(P. A single broad band of spicules along the outer side of the tentacles, which may 

 reach nearly to the tip. 



Comissia liitkeni. Comaster distiiicta. 



Tjeptonemaster rcnustus. Comaster parvus. 



Comatonia cristata. Comaster taiHana. 



Comaster nora-guinew. Comanthus henhami. 



Comaster multihrachiata. Comanthus samoana. 



Comaster fruticosus. Eudiocrinus indivisus. 



