310 



INDEX. 



simplex, Eoactis . -. 186 



simplex, Palxaster 61, 62 



simplex, Palaeophiura 235 



simplex, Xenaster 69 



skeleton, secondary, see accessory plates. 



sladenl, Echinasterella 200 



smythi, Petraster 139, 147 



Solaster 38 



solida , Palseostella 156 



sollasi, Lapworthura 251 



Spanlaster 39,43,47,49,50,74,95 



S. latiscutatus 96 



speciosa, Palxasterina 142 



speciosus Palxaster 109 



speciosus, Petraster 47, 139, 142 



speciosus, Promopalaeaster 104, 105, 109,113 



spines, see paxillae and pedicellarise. 



spinosa, Palxocoma 219 



spinosissima, Asterias 19 



spinosity 37,41 



spinosus, Echinasterias 211 



spinosus, Tgeniaster 216, 217,218, 219 



spinulosus, Palxaster 115 



spinulosus, Promopalaeaster 44, 104, 105, 115 



spryi, Gregoriura 234 



Squamaster 248,249 



S. echinatus 249 



squamatus, Palaeaster 23 



stalk of primitive starfishes 83, 34 



starfish, most primitive 31 , 33 



origin of graspers 33 



origin of wriggling type 32 



radicle 34 



stellata, Palasterina 196 



stellata, Schuchertia 195, 1 96 



stellata, Trentonaster 196 



SteUeroidea 



geological development 27,28 



geological distribution 28 



ontogeny 36 



phylembryo 34 



typembryo 8 5, 36 



stellifer, Protaster (?) 226, 228 



Stenaster (part) 173 



Stenaster 31,41,42,43,50,68,163,168,212 



S. (?) confluens 165,167 



S. (?) coronella 165,167 



S.grandis 180 



S.huxleyi 182 



S. (?) obtusus 165, 167 



S.pulcJiellus 178 



S.salteri 164,165 



Stenasteracea 163 



Stenasteridae 162, 168 



stone-canal, see madreporite. 



Strep tophiurse 215, 249 



Stiirtzaster 248,252 



S.colvini 253 



S.cygnipes 253 



S. marstoni 253 



S. (?) mitchelli 254 



Stiirtzura 235,286 



S. brisingoides 236 



S.leptosoma 236,237 



S. leptosomoides 236,237 



Page. 



stutchburii, Australaster (?) 73 



stutchburii, Monaster 73 



stutcJiburi i, Palaeaster ( Monaster} 73 



supramarginalia 15, 34,35, 46 



Sympterura ; 248, 256 



S. minveri 256 



syngnaths 218,222,224,242,256,267 



Tseniaster 216,218 



T. australis 236 



T. cylindricus 216,217,218,219,220 



T.elegans 219,221 



T. meafordensis 221 



T. schohariae 219, 220 



T. spinosus 216,217,218, 219 



Txniasteridx 172 



Txniura 216 



T.cylindrica 220 



tenuiradiatus, Coelaster 19 



terminals, see ocular plates. 



terminology of Asteroidea 13 



Tetraster 31,41,42,43,50,164,165,167,212 



T. asperrimus 187 



T. (?) imbricatus 168,169 



T . sp . ind . Nicholson and E theridge 186 



T. wyville-thomsoni (part) 65 



T. wyville-thomsoni 168 



t ischbeinianum, Aspidosoma 244 



tischbeinianus, Encrinaster 244 



torus 1 6, 43, 54, 174 



traquairi, Echinostella 212 



Tremataster 246, 247 



T. (?) decheni 247, 248 



T. difficilis 247 



Trentonaster 195 



T. stellata 196 



Trichotaster plumiformis 26, 38 



Trimeraster 44,45,50, 128, 184 



T. parvulus 134 



trivium 14 



Trochitaster, see Trichotaster. 



typembryo of Stelleroidea 85, 36 



ulrichi, Urasterella 37, 43, 45, 49, 175, 183 



Uranaster 61,138,154 



U. elizse 155 



U. kinahani 154, 155 



Uraster hirudo 188 



U. obtusus 167 



U. primxvus 153 



U.ruthveni 187 



Urasterella Sturtz 163 



Urasterella McCoy 40, 



41,42,45,47,49,50,69,164,178,194,212 



U. (?)asperrima 175,187 



U. asperula 175, 188 



U. (?) constellata 175, 187 



U. girvanensis 167, 175, 186 



U. grandis 174,175,180 



U. hirudo 175,188 



U.huxleyi 175,182 



U. montana 175,189 



U. n. sp 189 



U.pulchella 175,178 



U . ruthveni 174, 175, 1 8 7 



U.selwynl 175,188 



U. ulrichi 37,43,45,49,175,188 



