MARINE SHELLS. . 55 
Miarex erinaceus:,....0. 225 iki LEG) CO RROD ELAS iE Britain 
Peres WOLTIIVA | 2s, oc geal ot Brod. and Sby..... ....Panama 
Murex (Buccinus) magellanicus...Gmel. } 
: -.. ....9ts. of Magellan 
= Trophon gerversiauus...... Pail. § i a : 
Sites DlCAtUS. .. 2.) Sse. eo rot) ae Gulf of California 
eM PTINCEDS «soci s awa ae EO ae nave a a; La Paz, Mexico 
Ue aE aIX  is s kg eee Gmel... «West Coast of Mexico 
Wee eS.) 3... Ss, Ae Swain....West Coast of Mexico 
WEMres.TUDESCENS... ..7 eke nes JERE TR PRD dig iene eT ee Tahiti 
MURICIDEA. 
Muricidea incisus, var.... .....Brod.....West Coast of Mexico 
MYA. é 
PC PaVenaria so 2 kx Jeeta de finn.... eerie Mediterranean 
MYTILUS. 
Diy ims aVesulatus. . » o/s. OUI 2 esc 04s ae Valparaiso, Chili 
Wieyinisbalderii.......... raeMI NT | Footie sd ....Mediterranean 
Mytilus candigera. (See Lithodomus.) 
Meynuas cubitus.... 3.2.5 sue EDU tad lomo. oh tates ... Bahamas 
Mytilu+ cylindraceus.... ...... fieg.... ........Mediterranean 
MiMeUSeeOULIG:...2../ d.%) oa eee Linn,....Baltic Sea and Britain 
Mytilus exustus..... haat Se cae eae ye Bid ORF amAtca 
eaybyaibus hespericus: . 2. \.d20 00. TG UAT yp bak sche sel 8a. ‘Mediterranean 
Pigtineminimus. .:.. 0.2 sade 1 ULE Mediterranean 
Mytilus multiformis!.. 2.2.29, BT aes 5 doo « Gulf of California 
Mytilus palliopunctatus..../... OTE pS) GAN BON Lats Mazatlan 
Myiitis pellucidus......’. 3.92% JEP A ae . Mediterranean 
Mytilus smaragdus........... ADE EP China 
aed ee... : 
Miyiilos unieatortus....... Joie OUTE Ss a8 es ds cae Mediterranean 
MYURELLA. 
Myurella affinis..... reer ere Gfay........ Gulf of California 
« NASSA. 
Wassa albescens....2.5.°.5..0-. Dunk... Viti and Ascension Is 
Nassa abenamna:. 4.20) deat 2S GU TE A Ee EE 199 Ascension I 
