maritima, Helicellia.:. 1.1. .rseleteeieiae 
maugei, Lestacelliai..:.'. sistatcm +2) 
mauritianus, Lamellaxis,.......23 
Maximus, [sjivmaxX ss. ite teverateene 1, 40 
Melanta...ve:shecehststeterendue onats dseuetehadenae 
Melanoidesii rice ook c cree Dg wage eo 
tuber. culatareiciiels oecyos occa geo 
MESOGASTROPODA 2.2 « Zoe 0 
MUES URES TEER Aw aeccn ct anccets ebvebekeunneks 13 
Micra de amMe LNARScicters ote werencnerens 24 
IVE rch shch cet tetoteharstatsh« Ri AIe: ESMLS eS 3) 
PAP ALES Vs st vehstele eMelalccnsoranas OS 
M@USIGUSIGA. 5th teketetets ctoters Shes Oo 
Mionachiasse,s<)crciotel alerts ete vene cAhske.cote 30 
GANtLATIA SS er fare tet eters ote Stee eters 30 
Carthustanagg st Nel otsneve, clots tensiene 30 
sichotti:ne recs OMe erate eh 30 
monille, “Solaropsis ii siicteistare eneleredZe 
MONOPLAGO® PHO RA. .\.ttetcee oO 
moreleti, Veronicella stn. «sa. 220 
natalensiss eivadixnier. crcie eh cseteoneters 45 
Natural) communities! 2.0203. 22. 3 
nemoralis,. Gepacarl.t.\.iaeiere ste etele> 
nosophora, Pomatiopsis,...2, 5, 41 
obstructus, Armigerus.........46 
octonasy Subullina es meee ierensrereratel 2 
QR A GINTDAE Hie stelale chats Bie fotceul: 
ollulay Hosisiariaey, . os ss ss 35° 55°44 
Oncomelaniaw. cece. cs ag Dera 
OPSAas 12 Popatatoterasereet rete oNererevererene 23 
Pum ilym eee a es fo crete wee 
pyrowlas.’..'. aroneheneta sue er ene ene We, 
©Opisthobrianchiatayta-| chats oe LTA 
OREO oH RAG ot ee enereeeie ee LS 
@©t alliance? os". .% etal cteXetenehenene anenoralte: LS 
Laete ase 7 4008." elal eteteite tenemeneins i 2. 
vermicubat ary. o. seats eS) 
©xychalust 2". sfeleltetcle olson elo emaO 
aliiairduise 9 .r.r. eh Mere ansieselceenate 119 
celhariws! + SEAS aie eee 20 
driaparnal diy. <aevetehs Sis ecerenetemlen, 
Lesa Cs Db Ue ear de tn een es Setetnts arene 19 
Parafossanuluscy tsetse} 
miaTehOwUuriCus...! tes ¢ ene eos Oe AO 
Paragonimilasiss, |. 5 tte tales stetetefenen >. 
Paragonimulsh.."rccereererenstetewetemetere oS 
Page 
Parasites see 40: dee cameed ee wees 
PELEGYPODA:. . 1) 5 Sse on lel 
PhysSopsisss se ccc oiiaes Deel 2 ea, 
africana: << <:<%,<.6 < asie peg ee Mee 
pisana, (Mhebianws ciel 2 eniboies 6 ate Lee we Ies 
PLEANORBIDAE. ©. 22 6 05s ieteogeo 
Planorbinat 3.5%) << s sole stenn epee emenO 
pilabriatasrs ss ere eieierae 6% bemenee REO 
Plate I (Economically Important 
Tsand"Snails):% ¢ <5 seme ist AOE AO 
Plate II (Economically Important 
Land Snail's)/ 2. sare 1-5. 0s nel 
Plate III (Testacella and Economi- 
cally Important Slugs)fs. .2) 525059 
Plate IV (Medically Important 
Fresh-water Snails)....... 54, 55 
PEBUROGERIDAEL nia cancers . 42 
pomatias” Helix fcr. asvene tore etene . 34 
Pomatiopsiss 2%. si cles clei ganennelicnanw 
fOr MOS ANA. sis/e ens elaiete he oye cheer 
HUpENSIS 5.5.1.4. e's fete teheto tatohe’Cgm Denne 
Mapaclariiars torre etedetonerenole ohenener 3395 
nosophora..... eraveretal Mone 3550 Dig! 
Guadrasi’,y.teretee teeter ener. Zig Osi 
Porphyrobaphet..c tsa eterersiere ete yee) 
TOSEOMI A sta eters ate cvelet hetetanenens ea AS) 
Precautions’. so icteisncterctctstatcea teria 7 
Predators: secre one's 2. Dig Oa ame 
PROSOBRANCHIATA,...12, 18, 40 
PULMONATA .’..’.../12,, 193 *3¢pmas 
pumilum, Opeas. «cre stare See: 3a 
ramidata, Helicelllianiv... .emieen 
py rpullalwOpeldstrcrs cate sts of neeetenecee 
quadrasi, Pomatiopsis.....2, 5, 41 
Radiat ir tee tevens ae -oatarelenesettatentatee chee 
natalensis,...... endl enabete remote ete 
reticulatum, Derocerasi. a. oo 
RANA Tale ere oieicheye oe aie charatenetet Lic ena 
decollataie. Fe citcenarerereras Somes 
SCAPHORPO@ DA oicte ours er a Pe) Ly | 
Schistosomiasis”. sc cratererereverctareye cae 
schotti, (Monachiar. i's stcls steretetorseet ou 
SemisulcospiTials .).'.'. sree ep ae 
Libertina\ 10." steno ie meet Oe te 
STIGMUIRE PEA tc cco cel cr chencl eterna 
similaris, Bradybaena.........26 
