26 



1153 Margaritana margaritifera L. 



1437 Margarites vorticiferus Dall, Cal ac pr 5:59, t 2, f 4a-b. 



424 Marginella jewetti Carpenter. 



2338 Marginella politula Cooper. 



164 Marginella regularis Cpr 



165 Marginella subtrigona Cpr 



908 Marginella varia Sowerby. 

 276 Maries ia inter calata Cpr 



1266 Megatebennus bimaculatus Dall. 

 97 Melampus oli\aceus 



2093 Melania acutifilosa 

 46 Melantho decisa 



927 Melaniella? eiseniana J. G. Cooper. 

 2701 Melina Chemnitziana 



2754 Menetus opercularis Gld. 



910 Mesalia reticulata Migbels. 

 207 Mesalia tenuisculpta Cpr 

 369 Mera modesta Carpenter 

 468 Mera obtusa Carpenter. 

 373 Merethrix toreuma Gould 



909 Magerlia jeffreysi Dall. 



911 Mesodon armigerus Ancey. 



1209 Mesodon columbianus Lea. 



1210 Mesodon devius Gould. 

 573 Metaxia diadema 



2453 Metzgeria Californica 

 2574 Micrarionta desertorum 



912 Microphysa conspecta Bland. (See 1206.) 



913 Microphysa ingersolii Bland. 



914 Microphysa lansingi. (See 2743.) 



915 Microphysa pygmaea Draparnaud. 



916 Microphysa stearnsi (See 2744.) 

 2572 Milax gagates plumbea 



917 Miralda quinquecincta Carpenter. 



918 Milneria halioticola Dall. 

 321 Milneria minima Dall 



1158 Miodon prolongatus Carpenter. 



2735 Miralda Californica 



2697 Mitra Belcheri Swaiiison. 



2734 Mitra dolorosa 



2552 Mitra Fultoni 



2273 Mitra funiculata Reeve. 



2553 Mitra Idae Melville. 

 2700 Mitra lens 



2337 Mitra lowei Dall. 2454 



161 Mitra maura Swains 



2094 Mitra nodocancellata 



2554 Mitra orientalis Gray. 



432 Mitromorpha aspera Carpenter. 



919 Mitromorpha effusa Carpenter. 

 179 Mitromorpha filosa Cpr 



2712 Mitramorpha filosa intermedia 

 2336 Mitromorpha gracilior Hemphill. 

 127 Modiola capax 



920 Modiola fornicata Carpenter. 

 460 Modiola modiolus Linne. 

 2455 Modiola polita Verrill. 



324 Modiola recta Conr 

 2003 Modiola plicatula Lam. 



2755 Modiolus demissus Dillwyn. 



