200 
INDEX TO FAMILIES, ETC., 
PAGE. 
AsTKOPECTEN, H.istingsipe, i'oj'ies . . . . . . .113 
Hooperi, Wright . . . . . . .108 
Huxleyi, TFHffht . . . . . . .1^3 
„ Leckenbyi, Wright . . . . . . .114 
„ Orion, Forbes . . . . . . .127 
„ Phillipsii, J^o/'Ses . , . . . 122,123 
„ polyacanthus, Midler Sf Troschel (Ray of) . . . . .4 
„ rectus, McCoy . . . . . . 129, 168 
„ Scarburgensis, Wright . . . . . . 115' 
AViltsii, Wright . . . . . . .120 
AsTKOPHYTOsr, Linck . . . . ■ . . . . 133 
AsTKOPHiURA permira, Sladen . . . . . . .163 
Bdellacoma, Salter (P.F.) . . . . . . .31 
,, verm ifor mis, Salter (P.F.) . . . . . .31 
CiELASTER, Agassiz . . . . . . . .39 
Calliaster, Grag . . . . . . , . 42' 
Ch^taster, Mailer Troschel . . . . . . .46 
Cistina, Grag . . . . . . . . .43 
CoMPTONiA, Grag . . . . . . . .41 
Crenaster, Luidius . . . . . . . .39 
Crossaster, Miiller and Troschel ; see Solaster, Forbes. 
Cryptocrinus, Vo7i Biich (Osseous System of) . . . . . .15 
Ctenodiscus, Miiller ^ Troschel . . . . . . .50- 
CvLciTA, Agassis . . . . . • .40,41,47 
Dactylosaster, Grag . . . , . . . .43 
EcHiNANTHUs, Bregnius (Osseous System of) . . . . . .14 
Echinaster, Peters . . . , . . . 42, 46 
„ Eridanella, Valenc. (Madreporiform plates of) . ^ . . .17 
Solaris, Ellis (Madreporiform plates of) . . . . .17 
Echino-encrinus, Valborth (Osseous System of) . . . . .15 
EuRYALE, Lamarck . . .... . . . 133- 
EuRYALiDyE, Miiller Sf Troschel . . . . . . . 133 
Ferdina, Gray . . . . . . . . .43 
Fromia, Gray . . . . . . . . .43- 
GoMOPHiA, Grag . . . . . . . . 43 
GomA^si-E-R, Jgassiz ...... 39,42,106,184 
„ Hamptonensis, Wright . . . . . . .109 
„ obtusus, Wright . . . . . . .108 
GoniasteridjE, Wright . . . . . . .7, 108, 183' 
GoNiODiscus, Miiller ^ Troschel . . . . . . 49, 106, 107 
GoRGONOCEPHALTJs, Leach ........ 133 
Gymnasterta, Grag . . . . . . . .41 
Henricia, Gi-ay . . . . . . . .41 
HiPPASTERiA, Gray . . . . . . . .42 
HosiA, Gray . . . . . . . . .42. 
Lepidaster, Forbes . . . .. . . ... 35- 
„ Grayi, Forbes (P.F.) . .. > . . . .35. 
