INDEX TO GENERA AND SPECIES 



New genera and species and the pages on which they are described are in 

 black-face type ; synonyms in parenthesis ; pages where synonymy of known 

 species or genera is given in italics; varietal names are treated as specific for 

 the purposes of the Index. 



Acanthinula 21 



aculeata 21 



harpa (22) 

 Acella (60), 64, 72 



kirtlandiana 72 

 Achatinidae 33 

 Acmaaa 113 

 Acroloxus 108, 109 

 Acroxus (108) 

 Adelina (60) 



elegans 60 

 Adula (82) 

 Agriolimax 45 



agrestis 45 



berendti 46 



campestris 46 



hyperboreus 45 

 Alasmidonta costata (131 

 Alasmodon falcata (132) 



rhombica (127) 



yubaensis (132) 

 Alasmodonta arcuata (132) 



complanata (131) 



dahurica (132) 



rugosa (131) 

 Amalia 46 



gagates 46 



hewstoni 4.6 

 Ameria 101 

 Amnicola 117 



cincinnatiensis 118 



emarginata 118 



granum (118) 



hindsii (119) 



lapidaria (119) 



limosa 117 



pallida 117 



porata (117) 



Amnicolidse 117 

 Amphibinajj 



avara 55 



pfeifferi 55 

 Amphibulima (55) 



cuculata 55 



patula 55 

 Amphibulimus (55) 

 Amphibulina (55) 

 Amphipeplea 78 

 Amplexa (104) 

 Amplexis (22) 

 Amplexus (22), (104) 

 Ancseus (82) 

 Ancylastrum 108, 109 



cumingianus 108 

 Ancyllus (108) 

 Ancylus 11, 107, (108), 109 



caurinus (no) 



cumingianus 108, 109 



fluviatilis 107, 108, 109 



fragilis no 



fuscus 109 



kootaniensis no 



lacustris 107, 108, 109 



newberryi 109 



parallelus no 



patelloides 109 



radiatus 108 



rivularis log, (no) 

 Anguispira alternata (49) 



bruneri (52) 

 Angustula milium (32) 

 Anisopsis (81), 85 

 Anisus 81, (82J, 84 

 Anodon areolatus (127) 



biangulata (130) 



exilis (129) 



(157) 



