49° 



INDEX 



On a Collection of Fishes from Buenos 



Aires 451 

 Ophiodon 41 

 Orbitolites 406 

 oreophila, Rhus 177 

 ornatissimus, Astropecten 119 

 Ortmann, A. E. 1 

 ova, Harpalejeunea 157 

 oyamensis, Radula 144 



paciricus, Leptychaster 112 



Paleolagus 99 



papposus, Crossaster 132 



Paracambarus 1 



paracone 102, 105 



paradoxus, Cambarus (Paracambarus) 3 



Parastropecten inermis 115 



parastyle 102 



pati, Luciopimelodus 451 



Paurodon 101 



Pediomys 99 



Perca 42 



lucioperca 48 

 petiolata, Rhus 185 

 Phragmicoma sandvicensis 157 

 Phyletic History of Complex Molars 99 



Ungulate Molars 98 

 phyllobola, Rectolejeunea 149 

 Pike 61 



pilosimanus Cambarus (Procambarus) 6 

 Pimelodus albicans 452 



clarias macrospila 452 



valenciennis 452 

 piscatorius, Lophius 49 

 Plagiogyria euphlebia 146 

 planicosta, Venericarda 406 

 planiloba, L,ejeunea 147 

 platanus, Curimatus 453 



Mugil 455 

 Plecostomus carinatus vallanti 453 



commersoni 452 



laplatse 452 



tietensis 453 

 Pleuronectes 42 

 Pleuronectidae 56 

 polyacantha, Henriciai29 

 Pomolobus melanostomus 454 

 Populus zaddachi 406 

 Potamogale 93 



Pre-volcanic Auriferous Gravels in Cali- 

 fornia, Age of, 405 

 Procambarus 2 

 Prochilodus lineatus 453 

 protocone 92, 102 

 protoconule 102 



Protodont stage of ungulate molars 98 

 Protolambda 99 



pseudoneura, Harpalejeunea 156 

 Pseudoplatystoma coruscans 451 

 Psilaster 114 

 Pteris cretica 151 

 Ptilidium bisseti 141 

 pubescens, Metzgeria 143 

 pulchella, Rhus 182 

 Pycnolejeunea tosana 153 

 Pycnopodia 136 



helianthoides 138 

 Pycnopodiidae 136 

 pyramidata, Rhus 180 



quadriseriata, Metzgeria 142 

 quelen, Rhamdia 452 

 quinaria, Ludwigia 124 



Radula lindbergii 145 



oyamensis 144 

 Raja 42 

 Rathbunaster 136 



californicus 137 

 Rays 68 



Rectolejeunea 149 

 Rectolejeunea phyllobola 149 

 regalis, Astropecten 121 

 Reptilian stage of ungulate molars 98 

 Rhamdia quelen 452 

 Rhceidium 167 

 Rhombus laevis 59 



maximus 59 

 Rhus 167 

 Rhus, albida 194 



aprica 193 



arbuscula 184 



arguta 192 



ashei 179 



asplenifolia 196 



atrovirens 182 



auriculata 178 



borealis 188 



caroliniana 181 



cismontana 189 



elegantula 195 



glabra, a study of 167 



glabra 175 



ithacensis 178 



longula 186 



ludovicianus 183 



macrothrysa 191 



media 188 



nitens 190 



occidentalis 193 



oreophila 177 



petiolata 185 



pulchella 182 



pyramidata 180 



sambucina 190 



sandbergii 187 



sorbifolia 195 



tessellata 191 



valida 185 

 rubidus, Astropecten 121 

 rutilus, Astyanax 454 



Sabalites californicus 406 

 Salminus maxillosus 454 

 Salmo42 

 Salmon 59 



sambucina, Rhus 190 

 sarsi, Luidia 124 

 sandbergii, Rhus 187 

 sandvicensis Phragmicoma 157 



Brachiolejeunea 157 

 sanguinolenta, Asterias 127 

 scaber, Uranoscopus 49 

 Sciaenidae 456 

 Scapania 145 



brevis 160 



japonica 160 



stephanii 160 

 Seorpaenichthys marmoratus, Lymphatics 

 of 41 



