27 



2696 Modiolus Diegensis 



2344 Modiolus opiiex Say. 



921 Modiolaria corrugata Stimpson. 

 325 Modiolaria denticulata Dall 



922 Modiolaria laevigata Gray. 



923 Modiolaria marmorata Forbes. 



924 Modiolaria nigra Gray. 



925 Modiolaria taylori Dall. 

 1170 Moera salmonea Carpenter. 

 515 Mohnia frielei Dall. 



2404 Monia macroschisma Desh. 



152 Monoceros engonatum Conr 



154 Monoceros engonatum var. spiratum Blainv 



416 Monoceros lapilloides Conrad. 



151 Monoceros lugubre Sby 



153 Monoceros pauciliratum Stearns 



2492 Montereina 



2493 Montereina nobilis 



1280 Mopalia ciliata Sowerby. 

 1561 Mopalia ciliata Hindsii Sby. 



1281 Mopalia lignosa Gould. 



926 Mopalia sinuata Carpenter. 



1282 Mopalia wossnessenskii Middendorf. 

 1700 Mopalia imporcata Cpr. 



3041 Mopalia vespertina Gould. 



1579 Mopalia Wossnessenskii Swansii 



2894 Mopalia muscosa Gould. 



2895 Variety Lignosa Gould. 



2896 Variety Hindsii Reeve. 

 2885 Mopalia heathii Pilsbry. 

 2287 Morum tuberculosum Sby. 



1644 Mulinia palida Brod. & Sby. 1829. 



1645 Mulinia Gabbi Tryon. 1869. 



1629 Mulinia modes ta Dall, Nautilus 8:5 t 1 f (lower). 



1630 Mulinia coloradoensis Dall, Nautilus 8:6, t 1, upper f. 



1631 Variety acuta Dall. Nautilus 8 : 6 t 1 left f . 



1632 Mulinia Bradleyi Dall, Nautilus 8:6. 



2456 Murex Californicus Dall. 



1400 Murex (Pteropurpura) Carpenteri Dall. 

 2238 Murex carpenteri tremperi 



2562 Murex Carpenteri alba 



560 Murex (Chicoreus) leeanus Dall. Off Cerros Isl. 



1401 Murex (Pteropurpura) petri Dall, Nautilus 14:37 (1900). 



2457 Murex Painei 



2103 Murex palma-rosre Mexicana 



2530 Murex (Phyllonotus) santarosana 



140 Murex trialatus Sby 



142 Muricidea barbarensis Gabb 

 2411 Muricidea calif ornica Hiuds. 



930 Muricidea circumtexta Stearns. 

 2285 Muricidea dubia Sby. 



407 Muricidea fasceolata Hinds. 



931 Muricidea i'oveolata Hinds. 



928 Muricidea gracillima Stearns. 



2458 Muricidea incessa Brod. 



143 Muricidea incisa Brod 



929 Muricidea interfossa Carpenter. 



932 Muricidea lurida Middendorf. 



933 Muricidea poulsoni Carpenter. 



934 Muricidea salebrosa King. 



