INDEX. 



[The important references In each case are in heavy-faced type. Synonyms are in italics.] 



Page. 



abactinal 13 



abnormal development 101 



aboral, see abactinal. 



accessory actinals 13 



accessory interbrachials 13, 15,45,46 



accessory plates 13, 47, 51 



Acroura ( Ophiura) schlotheimii 18 



actinal 13 



acuminatus, Asterias. ., 93 



acuminatus, Mesopalseaster (?) 75, 93 



acuminatus, Roemeraster (?) 93 



adambulacralia, see adambnlacrals. 



adambulacral oral skeleton 16 



adambulacral spines 13, 43 



adambulacrals (see also lateral shields) 13, 



34,43,162,213,214,222 



Agalmaster 40, 49, 128, 13 1 , 133 



A.grandis 132 



A. intermedium 133 



A.miellensis 132 



Aganaster 263 



A . gregarius 264 



A. (?) sp. Miller and Gurley 251 



Aganasteridse 246, 263 



Alepidaster 216,228 



A. flexuosus 230, 231 



A. granuliferus 229, 230 



A. gregarius 264 



A. miamiensis '. 230, 238 



A. n. sp 230 



ambital and ambital plates 13, 46, 174 



ambulacralia, see ambulacrals. 



ambulacral oral skeleton 16 



ambulacrals 13,33,34,41,213,235,258 



alternate arrangement 13, 



33, 41 , 152, 172, 174, 213, 214, 215, 222, 226 



opposite arrangement 13, 



41,163,213,214,224,246 



americanus, Cadaster 146 



americanus, Petraster (?) 139, 146 



ampullae 213 



anal opening 13,89,54,61 



Anorthaster 41,42,43,50, 125 



A. miamiensis 127 



Anorthasterinse 52, 74, 126 



anthonii, A sterlas 146 



antiqua, Argaster 86 



antiqua, Asterias, Hisinger 149 



antiqua, Asterias, Troost 86 



antiqua, Hisingeraster 149 



antiqua, Palseaster (Argaster) 80 



antiqua, Palxasterina 149 



50601 Bull. 8815 20 



Page. 



antiqua, Palmipes 149 



antiqua, Petraster (?) 86 



antiquata, Asterias 109 



antiquata, Palxaster 109 



antiquus, Asteriscus 149 



antiquus, Lindstromaster 149, 153 



antiquus, Mesopalseaster (?) 75, 86 



antiquus, Palxaster 86 



anus, see anal opening. 



approximata, Palxasterina 142 



A rchxasterias 129, 130 



arcs, see axil. 



? Argaster 74, 77, 87 



A . antiqua 86 



arnoldi, Aspidosoma 243 



arnoldi, Encrinaster 241, 248 



asper, Onychaster 270, 2 72 



asperrima, Palxaster. 187 



asperrima, Urasterella (?) 175, 18 7 



asperrimus, Salteraster 187 



asperrimus, Tetraster 187 



asperula, A sterias 188, 262 



asperula, Roemeraster 188 



asperula, Urasterella 175, 188 



Aspidosoma 241 



A . arnoldi 243 



A.eifelense 244 



A. goldfussi 243 



A . gray se 245 



A. petaloides 243 



A. petaloides goslariensis 243 



A . ? pontis 244 



A . roemeri 244 



A. sehmidti 244 



A. tischbeinianum 244 



Aspidosomatidx 241 



Asterias 33 



A sterias Graham, Anthony and James 146 



A . acuminatus 93 



A . anthonii 146 



A . antiqua Hisinger. 149 



A . antiqua Troost 86 



A . antiquata 109 



A, asperula 188,262 



A.constellata 187 



A. matutina 57 



A. montanus 189 



A . primxva 167 



A . primordialis 108 



A. (Archxasterias) rhenana 131 



A. spinosissima 19 



asterid radicle 34 



ysterina 33 



303 



