o4 _» (@IARINE SHELIS. 
MODULUS. 
Modulus catenulatus .......... Phil..Cuba and Gulf of California 
Modulus cereodes(2)............ A, Ad........Guif of California 
Modulus: disculusset o20250* Ae Ya 1 PRES pe bP? Gulf of California 
Modulus: lentigulanise. oo ..raicd A 2. .< tn eee West Indies 
MONOCEROS. ; 
Monoceros brevidentatum: .. /.Gray.: ..1 22.9 eee Panama 
Monoceros cingulata.... ....... apis: a eae ee Panama - 
Monoceros CUO NM «2S. See I “CTT 
= GACaleVar cee ly he Be Marti 0275 ee 
Monoceros crassilabrum........ Lam... lS Chili 
Mowoeerds Nigwre: boa ange sh Soy. 2 vio. Ss Mexico 
Monoceros muricatum ......-. 3 Brod... ...-.» a Page hieep 
Monoceros tuberculatum........ Gray.... ....Gulf of California 
MONODONTA 
BL Om GOUOMTACTASSOL As Wyle hate ha el |). vw. Saas ...- Mediterranean 
Monodonta labia... ........... LANNE Ob os Re ee China 
Mouodonta oliveri....... Pane POPP Re Se .... Mediterraneau 
Monodonta tessellata,.......... VOT} Mies pee lenpny Mp Mediterranean 
Monodonta turbinata: )..° 0.2 So. TS OUN, «chats Crecente ... Mediterranean 
MULLERIA. 
Mulleria lobata..)..- SAS DCAD i ies ee oe New Granada 
MU REX. 
Miarrexadtisiiscee cutcuraccsss in ORL .. Hoae ee East Indies 
Murex arenaceus.......... ee bay <I Meditecencent 
=O PEIN BCCUS Ieee wees 6 82 Lin. S 
Murex bankstj ear e ne eee. Sby: : ates Cee Moluccas 
Murex DICOIOR. eon fee eos. - Udi ae _... Gulf of California 
Murex. brandarts... oi 4 oe oP LAITY eke ie _....Mediterranean 
Mprexibrassieis: |i ieas ete Lam..........Gulf of California 
Murextbrevilroiis, Soper bea Take Sea | Lave Sima 
Murex corallinus...............Scacchi..Britain; Mediterranean 
Murex crassilabrum. ...7%. Pe NT Pi RAS ELS Ege Valparaiso, Chili 
Murexentatatus. sim cstuscetecs Brocehns about Mediterranean 
