Dermatocera......... ans: eeedoeatnecrones 56 
itera. ce 
TSOP mere eererseraterereresereessesese 
eh ir iy 
LOE che De td a 
USING 111 nace a a a 
Emarginula,, 
1 02: ais oe te 
rato! ec. 
Kulima 
see eeestrace 
DV FOO see Perens ees BO Sree cee aoe eeee 
PAR CSEARUETIAC Ser. cokes nate uae 
CIA Rereter ect tn 
Fissurella... 
sts). 
SPAT AG roy) cee pee (ut eter eh ee 
Pralearniiniyeese | co 8 eos. ee eee 
Grastroch etter... ssceh .cansndcadeee cao. 
ecomelania., co. .cci mein cee ee 
ES POUISSAC A. <i Accu eeie 
Glauconoma..,,. 
Glycimeris... 
EUATIOMIG sc tcaacns ic. enaeseim eee 
PU OMINED Yoo cinatisynaeiastes chee ee 
1 LES eae yn pai 
Helicina..,... PAC OBOUNAGOtaS Hoo. ne 
LE LCITE Seppe a RRR A MRIS IPRS 
LIP PONG pssactieosieae 
BTU DO DUS ies 5 wacateecioysesiss ene 
LEGS: Soe al rah ARP RC 
Hybocistis,... 
Hydatina,.}... 
Hydrocena.., 
Ly Tia... 
TANTHINA..... 
Tphiginea..... aoseeee 
LL Ta Ra ie aes, Als Bl 
Ue cepmdias Oa oe ite yh ety 
Karnrmacaeess 
HE ACUNA o's 0s-ssstaettnrnse ee eaten eo 
Leda... said asa oatateanslentcceis 73 
Leptoconchts.. wise eeseascctbeesaSmeeseiieal aio 
Leptopoma........... pp screanancctace Tea 
TEEDLORIS ce ehswerene dceesesrsspesiane 
Leuconia...... istes cleiseiteanane aon come ce eens 
ILD: ee sae pn 8 aa eae eA, Oy Fe 
| ZING, ERI May Se Ries tet L ITE a on 261) 
Bianca rego. 2G os eee a age 
LUT a UE aco ia ai lal ER Uri 
Method OMS taeene ster cee 
Littorina......... 
Lolivan ts: : nee 
Lucidella.......... 
Tjucina 2) Sicsseee 
THUCIMOPSIS. oreonsene 
Page. 
POR mee tees POP d ees nee tace ese 
. ene es 
bercertee secety we eeece . 
eee ee eeees 
eoveere Peer are tere feee 
TitParia wcascsstescs meen. He caocogescce 57 
DV OMSIA sce sescncs Ame canogen wado7 eee 
MACHZERA......0.. ace SES wescas aestaeg 
Mactan ceree: BEPC aceon C ee. 
Magilus. 
Malleus... 
Margarita Bonne Bae 
Margaritana ......... 
Marginella.,,... 
Martesia.......... 
er or a 
Megalomastoma.... 
Mes aspitaniccisesseosver: 
Melampus... Shae Appdaencnc 
eee eoerereueeeareasesrtee 
Oke eer e hse teeheetaaton 
ee eerttee sot arren 
Po er oe 
Mielanial hepa eee kesetes EP ECCOR Oa 
Melanopsis..... 
Meroé... 
Mesodesma...sssece seeee 
Wittens o- 
Modiola. 
Monoceros... .....-. 
Monodonta.er.......: 
Monoptygma.........8 
Morullastereeen csc nes 
Murex.-........ Nesticecnnts 
Mya... 
SOs cae 
Pere ee eet eet ee Pte ete at eal Bsrs 
Geis a.aibicial®’ave © whee ree OOOH eetes 
ere oeaartes 
Coes aateateateares 
OO er eresere erat eared 
eteesee 
eberenteeree 
etoetent.atee 
Or ee ee ee 
ee tooe 
MyOchamasec: sascccuc:secvaceeenaasaihianrar 
Miyod0ra)..:s..cc<es 
Mytilus...... 
INARICA..... Weleloetisaiinednets 
INaSSa er cteccce teneteane 
IWiatiCat wncccske: eavaneeeenina ss 
Pray ee | 
Nautilus..... AB SAaocOOL OOO oouEeHEn Svreisiatsteiste 
Navicella.. 
Niemeralsens- cat PROSE 
INGrItAcn sche con neceee ae ees 
INieritiniavesssses. 
Neritopsis...... cise tna waves 
Novaculina........ 
Nucula...... 
OCTOPUS! ceuectees Socauenses eet 
@doOstOmiaec..sscsascece alates 
Omphalotropis. 
Oniscia...... 
Opisthostoma.,... 
Ostrea..... alseaeeialite 
Qpisthoporus.. 2.6505 caceaeseness 
Oxbicula.....c08 Praesens 
fears OOO dee aeaasee 
se OOOO OO- saree easoee 
See tee sees aes eereee 
Pe ee | ree 
eeoree eeeres ee 
eee eeeree . 
seaeee 
aes 
ete ee O ee rowee searee 
sO bat eeton 
eee CPO Oe ets atontees 
eteorecseereatee 
Peer eet ser eereeses0ee 
72 
25 
eO@eeesarre 58 
13 
54 
55 
75 
75 
CLOPOMS..cccescekeiesss nah ee POOreeeSetersson 57 
CQ) yUlWim, sie soseestaevanscencadeeneneneesete 23 
