Alphabetical Index 



215 



Oligophreata 68 



Olindiadae „ 32 



Olindias 32 



tenuis (pi. 4) 32 



Ommatostrephes 171 



illecebrosa 171 



sagittatus 171 



Ommatostrephidae 167 



Onychoteuthis 165 



banksii (pi. 104) 165 



Onychoteuthidae 165 



Onychoteuthinae 165 



Ophiocoma 112 



aethiops (pi. 65) 112 



bellis 109 



Ophiocomidae 112 



Ophidiasteridae 79 



Ophioderma 117 



antillarum 117 



appressum (pi. 66, 75, fig. B, and 



76, fig. B) 113 



cinereum (pi. 68 and 69) 115 



longicauda (pi. 70) 117 



longicauda variety guineense 118 



variegata 115 



variegatum (pi. 67) 114 



virescens 114 



Ophiodermatidae 113 



Ophioglypha 120 



sarsii 120 



Ophiolepidae 119 



Ophiolepis 122 



elegans (pi. 74, 75, fig. A, and 76, 



fig. A) _ 122 



scolopendrica 110 



Ophiopholis 108 



aculeata 109 



aculeatus (pi. 73) 108 



bellis 110 



Ophiomyxa 98 



pentagona (pi. 58) 98 



Ophiomyxidae 98 



Ophiopleuteus 119 



compressus 119 



Ophiotriehidae 110 



Ophiothrix 110 



angulata 110 



hispida 110 



suensonii Ill 



violacea 110 



Ophiura 119 



angulata 110 



appressa 114 



bellis 109 



cinerea 117 



elongata 108 



lacertosa 118 



laevis 118 



ophiura 122 



pentagona 99 



sarsii (pi. 71) 119 



texturata (pi. 72 and 73) 120 



Ophiuroidea 98 



Oreaster 80 



aculeatus 82 



armatus 74 



gigas 82 



reticulatus (pi. 41 and 42) 80 



Oreasteridae 80 



Othilia 91 



spinosa 91 



Paractidae 66 



Pavonaria 59 



californica (pi. 20) 59 



Pavonariidae 59 



Paxillosa 71 



Pelagothuria 150 



natatrLx 150 



Pelagothuriidae 150 



Peltaster 82 



planus (pi. 43, 44 and 45) 82 



Pennatulacea 57 



Pennatulidae 57 



Pentaceros 74 



(Nidorellia) armatus 74 



lengtiginosus 81 



reticulatus 81 



Pentactes 163 



frondosa 163 



Pentadactylosaster 89 



oculatus 89 



Periphylla 40 



hyacinthina 40 



hyaeinthina variety dodecabost- 



rycha 41 



Periphyllidae 40 



Petalaster 78 



Columbia 78 



columbiae 78 



Phanerozonia 71 



Phyrnophiurida 98 



Physalia 37 



physalis 37 



Physalidae 37 



Piscis Echinostellaris 102 



visciformis 102 



Plexaura 52 



fusca 52 



Plexauriidae 52 



Plumulariidae 30 



Polycanna 29 



groenlandica 29 



Polyelonia 46 



frondosa 46 



Polyplacophora 199 



