458 
ECIIIN0DERM4TA. 
ECHINODERMATA 
BY 
W. P. Kirby, M.E.S. &c. 
SciiMARDA (Zoologie, i. pp. 234-262) arranges the Eciiino- 
DERMATA RS folloWS : 
Asteroidea. 
Blastoidea, Cystidea, Crinoidea, Encrinida, Actinocrinida, 
Apiocriniday Pentacrinida, Cyathocrinida, Anthocrimday &c. 
(mostly fossil), Comatulidaj Stellariday Euryalidaj Ophiurida, 
Brisingidaj Asterida. 
Echinoidea. 
Tessellata, Euech I noidea, Cidariday Eehinina, Diadema- 
tina, Echinometrina, SalenidUy Galeritiday Galeritina, Echino- 
neina, DysastridUy Clypeastriday Clypeastrina, Laganina, Molli- 
tina, Cassiduliduy Spatangiday Ananchitina, Spatangina. 
Holotiiurioidea. 
Apneumona, Synaptiday Onchiolabiday Tetrapneumona, Di- 
PNEUMONA, Molpadiduy Dendrochirotay Aspidochirota. 
Verrill (Tr. Conn. Ac. i. pp. 568-693) remarks on the following species, 
most of which he redescribes : — 
Plataster dance y Verr., pi. 9. figs. 10 & iOa, E. Patagonia ? j Plagionotus 
pectoralisy Lamk., W. Indies and (var.) Florida; Gymnasteria spinosa, Gray ; 
Mithrodia hradleyiy Verr. ; Acanthaster ellisi, Verr. j Ileliaster kuhiniji, Xant. j 
Astropyga depressa. Gray (=:A. venusta, Verr.); Echinodiadema coronatuinj 
Verr., is not the young of Diadema mexicanum as supposed by A. Agassiz; 
Bolctia pictuSy Verr. ; J5. rosea, Ag., is a true Boletia and not a Lytochinusy as 
formerly supposed by Verrill; Toxocidaris mexicana y A\f.y is distinct from 
Ilelioctdaris mexicana, Ag., which = Eckinotnctra michelini, var.; but JE'cAmo- 
metra michelini, Verr., = Toxocidaris crassis 2 nna, Ag. ; Echinus homolustoma 
and erythrogramma, Verr., also belong to Toxocidaris, hxxt Tox. franciscana, 
Ag., from California, may be a Loxechmus, if this genus is truly distinct from 
Toxocidaris ; Echinometra vanbrunti and rupicula are probably distinct ; En- 
cope grandisy Ag. ; E. calif ornicUy Verr., pi. 10. figs. 5 & 6 ; Melita longijissa. 
