ARNOLD— THE PALEONTOLOGY AND STKATIGKAPHY OF SAN PEDRO. 



411 



Lacuna pallidula 302 



porrecta 19, 22, 24, 25, 28, 31, 42, 83, 303 

 solidula 19, 28, 42, 61, 83, 303 

 var. compacta 302 

 LfBvieardium 74, 140 

 elatum 74, 141 



substrlatum 18, 21, 23, 25, 27, 30, 33, 36, 61, 74, 

 141 

 Lamellaria 84, 317 

 depressa 317 

 perspicua 317 

 steaiusii 19, 42, 61, 84, 317 

 Lamellariidae 84, 317 

 Laucea 81, 272 



aurantia 81, 272 

 elougatii 272 

 pentalopha 81, 274 

 tridentata 81, 273 

 Laquens 71, 93 



californicus 93, 94 



var. vancouverensis 93 

 jeffreysi 15, 46, 51, 52, 53, 71, 93 

 Lazaria 74, 129 



pectunculus 129 



subqiiadrata 18, 21, 25, 27, 36, 74, 129 

 Leda 57, 72, 96 

 calata 98 



fossa 18, 36, 72, 96 

 hamata 18, 36, 61, 72, 97 

 miuuta var. prsecursor 18, 21, 36, 72, 97 

 pernula 96 



taphria 15, 17, 18, 21, 23, 25, 27, 31, 32, 36, 61, 

 72, 98 

 Ledidre 72, 96 

 Lepas tintinnabulum 344 

 Leptonacea 74, 136 

 Leptonidae 74, 136 

 Leptonyx hacula 323 

 sanguinea 323 

 Leptothyra 84, 322, 323 



bacula 19, 31, 42, 52, 84, 323, 324 

 oarpeuteri 19, 22, 25, 28, 42, 68, 84, 322, 323, 324 

 paucicostata, 19, 42, 52, 84, 323 

 sanijuinea 323 

 sangumeus 323 

 Leucosyriux 78, 202 



pedroana 78, 202, 208 

 Lima 73, 115 



dehiseens 18, 36, 116 

 (Maatellum) dehiseens 116 

 hians 115 

 orientalis 116 

 squamosa 115 

 Limidag 73, 115 

 Limna^idau 77, 195 

 Lingula albida 94 

 LingulidjB 71, 94 

 Linguliuffi 71, 94 

 Liocardium crueiilatum 141 

 elatum 141 



Liocardium snbstrialum 141 

 Lioconcha ntwcombiana 143 

 Liotiidas 84, 320 

 Lithophaga 73, 121 



plumula 73, 121 

 Lithophagus plumula 31, 36, 121 

 Littorina 83, 301 



litorea 301 



palula 301 



pedroana 303 



plauaxis 13, 19, 22, 28, 42, 83, 301 



plena 302 



scutulata 19, 22, 24, 25, 28, 31, 32, 42, 55, 61, 

 83, 301, 302 

 Littorinidffi 83, 301 

 Lucapina 85, 337 



creuulata 31, 42, 85, 337 

 Lucapinella callomarginaia 340 

 LucinidiB 74, 131 

 Lucina 74, 131 



acutiliueata 14, 15, 17, 18, 21, 23, 25, 27, 36, 52, 

 61, 65, 67, 68, 74, 131, 132 



borealis 67, 131 



californica 15, 18, 21, 23, 25, 27, 31, 32, 33, 36, 

 52, 56, 62, 74, 132 



jamaicensis 131 



nuttalli 18, 21, 23, 25, 27, 31, 32, 33, 36, 62, 74, 

 132 



orbella 134 



tenuisculpta 27, 36, 61, 74, 133, 134 



teirica 131 

 Lucinacea 74, 131 

 Lunatia 84, 315 



letoisii 32, 50, 57, 84, 315 

 Luponia spadicea 288 

 Lutraria canaliculata 177 



capax 17S 



maxima 178 



(Cryptodon) nullalli 178 



transmontana 177, 178 



undulata 177 



venlricosa 175 

 Lutrariiuas 76, 178 

 Lutricola alia 160 

 Lyonsia 73, 125 



bracleata 125 



californica 15, 18, 21, 23, 25, 27, 36, 73, 125 



nilida 125 



norvegica 125 

 Lyonsiidaa 73, 125 



Mach^era patula 173 

 Macoma 52, 75, 160, 161, 169 



calcarea 18, 36, 75, 161 



edulis 68 



expansa 161 



indentata 27, 31, 36, 62, 75, 161, 163 



iuquinata 15, 18, 23, 25, 27, 31, 33, 36, 48, 56, 

 62, 68, 75, 162, 163 



kelseyi 161, 162, 163, 164 



