342 



INDEX 



Hipponyx 210 



Holospira 294 



arizonensis . . . .294 



Hopkinsia 126 



rosacea 126 



Ilyanassa 162 



obsoleta 162 



Isapis 206 



Ischnochiton . . . .256 



conspictins 256 



magdalcnensis .256 



mertensii 256 



regularis 257 



Janthina 184 



exigua 184 



globosa 185 



Katherina 261 



tunicata 261 



Kellia 63 



laperousii 63 



suborbicularis .. 63 



Labiosa 107 



undiilata 107 



Lacuna 205 



porrecta 205 



solidula 205 



iinifasciata . . . .205 

 variegata 206 



Lamellaria 214 



diegoensis 214 



stearnsii 214 



Lanx 310 



Laqueus 16 



californicus .... 16 

 jeffreysii 17 



Lasea 64 



rubra 64 



Leda 26 



hamata 26 



taphria 26 



Lepidopleiirus ...254 

 internexus . . . .254 

 nexus 254 



Lepton 62 



rude 63 



Lcptothyra 227 



baccula 227 



carpenter! 227 



Lima 49 



dehiscens 49 



Limopsis 30 



vaginata 30 



Liocyma 83 



scammoni 83 



viridis 83 



Liomesus 158 



canaliculatus . . 158 

 nux 158 



Liotia 240 



acuticostata . ...240 



eschnauri 241 



oldroydi 240 



williamsoni . . . .240 



Lithophagus 38 



plumula 38 



Limax 266 



agrestis 266 



campestris . . . .267 

 hewstoni 267 



Littorina 203 



alentica 204 



atkana 204 



planaxis 203 



pullata 204 



rudis 203 



scutulata 203 



sitchana 204 



Lojigo 297 



Lucapina 251 



crenulata 251 



Lucapinella 251 



calliomarginata. 251 



Lucina 76 



acutilineata .... 69 



borealis 69 



filosa 69 



Lutricola 96 



Lymn?ea 307 



bryanti 309 



bulimoides . . . .309 



caperata v308 



cockerelli 309 



cubensis 308 



obrussa 308 



palustris 307 



sancti-joscphi ..309 

 sonomaensis . . .309 

 stagnalis v?07 



Lyonsia 109 



calif6rnica 109 



Lyonsiella 110 



alaskana 1 10 



Alacoma 93 



balthica 94 



inconspicua .... 94 



indentata 94 



inflatula 94 



inquinata 94 



nasiita 94 



secta 95 



sitkana 95 



Macrocyclis 265 



Macron 156 



kellettii 156 



lividus 156 



Mactra 105 



californica 105 



dolabriformis . . 105 

 nasuta 105 



Malletia 28 



faba ^ 28 



Margarites 233 



helicina 233 



lirulata 234 



pupilla 233 



vorticifera . . . .234 



Marginella 142 



jewettii 142 



varia 142 



Martesia 115 



intercallata .... 115 



Megatebennus ...252 

 bimaculatus . . .252 



Melampus 128 



olivaceus 128 



Metis 96 



alta 96 



Milneria 60 



minima 60 



Mitra 143 



fultoni 144 



idae 143 



lowei 144 



maiira 143 



orientalis 144 



Mitromorpha .... 144 



aspera 144 



filosa 144 



Modiolaria 38 



taylori 38 



