•n: 



CALIFORNIA ACADEMY Ol' SCIENCES. 



Maoomn imsiitii IS, '.'1, 'JS, OTi, 27, 31, 32, .33, 36, ."iS, 

 AT, «•:, 68, T.'', 162. 103, 104. 167 

 var. keUeyi 27, 31, .30, 02, 7.">. 104 

 fxtlroana 167 

 soetn 18, 21, 23. 25, 27, 31, ;t2, 3.3, 36, 02, 68, 1\ 



103. 104 

 {Itixithitruf) ffcta vnr. nliitia 164 

 tciicra 100, 101 

 trrta 163 



yolJiformis IS, 21, 30, 02, 7r>. 101, 10.3, 105 

 Maorou 70, 2.30 



kelU.ttii 28, 42, 70. 2.30 

 livi.lus 42, 70, 2.30 

 Mnotra 70, KM, 174 

 anntiiin 177 



ciliforiiici 27, .36, 59, 62, 70, 174, 175, 176 

 ciitilliformis 23. 25, 27, 31, 33. 55 

 (Spisnln) cntilliformis 36, 02, 176 

 oxoleta 27, .36, 02, 07, 76, 175 

 (nlcnta 18, 21, 23, 25, 27, 31, 33, 170 

 (Spisula) falcata 36, 62, 176 

 himphilli 27, 36, 76, 175 

 maxima 178 

 plauulata 174 



var. falcata 176 

 solida 175 

 stultonim 174 

 Mactracea 76, 174 

 Mactrida> 76, 174 

 MactriniG 76. 174 

 Mitra nalmonea 157 

 Malacostrncft 85, 345 

 Maugilia 55, 78, 210, 211 



augulnta 10, 22, 25, 31, 42, ,52, 55, 62, 78, 212 

 (Cythara) branneri 211 

 (Clathurella) conradiana 210 

 hooveri 28, 42. 78, 212 

 iuterfossa 213 



var. pedroana 19, 25, 42, 52, 79, 213 

 interlirata 19, 31, 42, 79, 213 

 oldroydi 19, 42, 79, 213, 214, 215 

 painei 19, 42, 79, 214 

 sculpturata 15, 42, 79, 214, 215 

 striosa 28, 31, 42, 62. 79, 215 

 (Taranis) strong! 215 

 variegata 212 

 MaugiliiB 214 

 Mantellnm 73, 115 



dehiscens 7.3, 110 

 Margarita 84, .332 



calostoma 333 

 cidaris 334 

 helicina 3.32 

 optabilis 3.32, 333 



var. knechti 22, 23, 28, 42, 84, 332, 333 

 var. nodosa 19, 22, 42, 84, 332 

 parcipicta 84, 333 



var. pedroana 19, 22, 24, 28, 31, 42, 84, 

 333 

 pnpiUa 42, 52, 84, 333 



Margarita nalmonea 333 

 Margiuolla 79, 221 

 globplla 221 



jowettii 10, 22, 24, 25, 28, 42, 79, 221 

 (VoWiiriiia) varia 222 

 Margiiiollidii' 79, 221 

 M'-ijatfltfiinnH himartilalits 339 

 Meijirlia jiffrrysi 93 

 Molaiupina' 78, 106 

 MelampuB 78, 100 

 Molaiupiis Inteus 190 



olivaoeiiH 19, 22, 24, 25, 28, 31, 42, 02, 78, 197 

 Melaiiia rufa 274 



scalaris 277 

 Mfrcenaria jn'rtaininosa 140 

 Miri'trix catlona 145 

 Metis 75, 160 



alta 18, 23, 25, 27, 31, 30, 62, 75, 100 

 Mitra 79, 222 



episcopaliH 222 



maura 22, 24, 25, 28, 42, 79, 222 

 Mitridro 79, 222 

 Mitromorpha 70, 223 

 aspera 223, 224 

 filosa 19, 42, 79, 223, 224 

 gracilis 223 



intermedia 19, 42, 52, 79, 223 

 Modelia striata 303 



Modiola fornicala 18, 31, 30, 52, 55, 120 

 pulex 118 



recta 18, 2.3, 27, 31, 36, 02, 120 

 Modiolus 73, 120 



fornicatus 73, 120 

 rectus 73, 120 

 Mttirella 75, 156 



salmonea 18, 36, 75, 157 

 Mollusoa 72, 75, 70, 77, 78, 79, 80, 81, 82, 83, 84, 85, 95 

 MoUuscoidea 71, 92 

 Monia 73, 110 



macroschisma 73, 116 

 Monoceros 80, 246 

 brevidc.ns 247 



engonatum 19, 22, 24, 25, 28, 31, 32, 42, 55, 56 

 62, 80, 240, 247 

 var. spiratum 247 

 lapilloides 28, 42, 80, 246, 247 

 lugubre 246 

 punclatum 247 

 unicarinatum 246 

 Monodonla (jallina 326. 

 Mouotremata 77, 194 

 Mopalia S.'j, 343 



blaiuvillei 343 

 ciliata 28, 42, 85, 343 

 musrona .343 

 MopaliidfB 85, .343 

 Mourctia reticulata 197 

 Murex 80, 243 



adustus 243 

 harbarensii 254 



