AMP ACR Et 1 CAT NODE X 
PAGE 
ACHATINA. 
Achatina acicula ...~XUVna@%. 36 
AcME. 
Acme fusca . oe AAU BE. 
Acme minuta .........cssseeeseee 
AGINA. 7» _ 76 
Agina purpurea .......seseseee eee 
A est peer Sealer) 
ALASMODON. 
Alasmodon margaritiferus ¥/=/ 83 
Alasmodon margaritiferus, 
AQGQUGGR |< dadveus-loccsrseee esse a Oe 
Alasmodon margaritiferus, var. 
MINOT, weee--- ees socseee 83 
Alasmodon Seen var. 
olivacea... ae 84 
Alasmodon margavitfera, var. 
Roissyi .. 83 
AMPHIDESMA. 
Amphidesma Boysii ..!!.=.22.. 
Amphidesma prismatica / 
Amphidesma tenue . 
Amphidesma truncata............ 

eas are 
Amphipeplea glutinosa v7... 30 
Amphipeplea involuta..X¥4-9 29 
Amphipeplea lacustris... ¥%/ -!-2 30 
ANATINA. 
Aviatinsaarctiess jesscncseesevcaccse 
Anatina convexa 
Anatina declivis .. 
Anatina distorta ....... 
Anatina pretenuis .. 
Anatina pubescens .. 
Anatina truncata .. 
ANcyLvs. 
Ancylus fluviatiles ............... 59 
Ancylus lacustris 60 

Anopon. 
AnodonCygneus ..........0.s0008. 79 
Anodon Cygneus, v. EARNS: auarist) 



TO THE 
GENERA AND SPECIES. 
PAGE 
AnodonCygneus, v. Avonensis. 80 
Anodon Cygneus, v. cellensis .... 79 
AnodonCygneus, v. complanata 80 
AnodonCygneus, v. contorta ... 81 
AnodonCygneus, v.intermedia. 79 
Anodon paludosus ............2.5 79 
Anodon Cygneus, v. piscinalis ... 
Anodon Cygneus, v. ponderosa.. 80 
AnodonCygneus, v. rostrata -... 80 
AnodonCygneus, v. stagnalis ... 79 
AnodonCygneus, v.subrhombea 80 
ANOMIA. 
Anomia aculeata ............2..00 
Anomia cepa ........ 
Anomia cylindrica ... 
Anowia ellectrica .... 
Anomia Ephippium... 
Anomia fornicata...... 
Anomia punctata...... 
Anomia squamula .... 
Anomia striolata .... 
Anomia tubularis...... re 
Anomia undulata.................. 



APLEXUs. 
Aplexus hypnorum ................ 30 
ARCA. 
Arca barbata ............. 86 
Arca fusca ... 86 
Arca lactea .. 86 
Arca Noe... 86 
Arca perforans .. 86 
Arca reticulata.. . 86 
Arca tetragona........0...ssscereee 86 
ARCOPAGIA. 
Arcopagia crassa ......... 99 
Arcopagia ovata ........00220000. 99 

ARION. 
Arion empiricorum ....... 
Arion hortensis ..............00++ 

ARTEMIS. 
Artemis exoleta ... 
MATHOIMNIS LiNCES, ..-cocteveust'sctces c+. 

ASSIMINIA. 
Assiminia Grayana .............4. 


PAGE 
AvIcULA. 
Avicula Anglica .............0000 74 
Avicula Atlantica . 74 
Avicula Hirundo ...............0.. 74 
AZECA. 

AAZECA\tRIONS, ese causadeceveeetee mR Le 
Azor. 
Azor antiquatus ..........00s000 113 
BaLza 
Bala fragilis 37 
Balea perversa........0.e0e0ec00se. 37 
BaLants. 
Balanus balanoides .. 120 
Balanus candidus ..... 121 
Balanus communis .. ael20 
Balanus conoides ... 121 
Balanus costatus ... 120 
Balanus Cranchii ... 121 
Balanus Montagui . 121 
Balanus ovularis ..... 120 
Balanus punctatus .. 121 
Balanus rugosus ... 120 
Balanus Scoticus ... 121 
Balanus spongicola ............... 121 

Binocuina. 

Biloculina elliptica ............... 2 
Biloculina lactea ........ 2 
Biloculina marginata .. 2 
Biloculina oblonga ............... 2 
BITHIANA. 
Bithiana tentaculata ... 
Bithiana ventricosa............... 

Brocuus. 
Brochus annulatus ... 



Brochus arcuatus... 
Brochus glaber.... . 124 
Brochus levis ...... 125 
Brochus reticulatus ... 124 
Brochus striatus ...... 125 
Brochus trachiformis ............ 124 
Buccinvm. 
Buccinum Anglicanum .......... 4 
Buccinum acuminatum ......... 4 


PAGE 
Buccinum breve ....... 4 
Buccinum carinatum . 126 

Buccinum fusiforme .. 1 
Buccinum glaciale ............... 4 
Buccinum Einnpleeyeaniite E, 4 
Buccinum obtusulum ............ 4 
Buccinum ovum .... 4 










Buccinum undatum 4 
Burmvs. 
Bulimus acutus ...... 37 
Bulimus Tackhareanee 36 
Bulimus lubricus ... 36 
Bulimus montanus ............... 36 
Bulimus obscurus.................. 36 
Burra 
Bullatalbalss.sscesessteseussce sone 56 
Bulla Cranchii ..... we OF 
Bulla denticulata...........0.....- 57 
Bulla emarginata.............00... 57 
Bulla Hydatis ..... 57 
Bullaonaria\ cc.cewscecdeveeseers 56 
Bulla producta.. 57 
Bulla striata... ed atten OT 
Bulla zondta wicca. cetcecccerclees 56 
BuLLma. 
Bullwa‘aperta, ...:scesssoveczeeoeve 57 
Bullza catinulifera ............... 131 
Bullwea Catina) ...<scceccsest-ccss | BY 
Bullza punctata ................. 58 
CALYPTREA. 
Calyptrea Sinense ......... 60 
Capsa. 
Capsa castanea.............cc00208. 97 
Capsa complanata ....... 97 
Carpium. 
Cardium aculeatum............... 87 
Cardium echinatum.. 88 
Cardium edule... eecee eal 
Cardium caine var. sccoamae 87 
Cardium exiguum ........060000 88 
Cardium fasciatum ............... 88 
Cardium levigatum............... 88 
Cardium oblongum ..... 88 
Cardium tuberculatum .......... 87 
Cardium zonatum ............... 88 
