194 
gosoma scabricorne, Serville, 26 
sinicum, White, n. sp., 27 
sulcipenne, White, n. sp., 28 
tibiale, White, n. sp., 28 
Agaronia, 35 
Alcadia, 42 
Alcadia rubella, Pfr., n. sp., 60 
Alvania, 39 
Amalthia, 44 
Amathina, 44 
Ambyostoma Californiense, Gray, n. sp., 
ll 
Caroline, Gray, 11 
punctulatum, Gray, 11 
Amphiperas ovum, 40 
Amphiperaside, 40 
Ampullaria, 42 
Ampullariade, 42 
Aneillaria, 35 
Ancillaria candida, 35 
Ancylastrum, 79, 80 
Ancylus, 76 
Ancylus acutus, Bronn, 89 
aduncus, Gould, 80 
albus, Hentz, 87 
Baconii, Bourg., n. sp., 89 
Bahiensis, Moricand, 84 
— Barilensis, Moricand, 81 
Beani, Bourg., 81 
Caffer, Krauss, 81 
calcarius, De Kay, 81 
capuloides, Jan., 83 
Charpentiecrianus, Bourg., 81 
compressus, Nyst, 81 
concentricus, D’Orb., 81 
corneus, Poiret, 87 
costatus, Fér., 86 
— costulatus, Kiister, 81 
— crassus, Hald., 81 
—— culicoides, D’Orb., 81 
— Cumingianus, Bourg., n. sp., 91 
— cyclostoma, Bourg., 82 - 
decussatus, Reuss, 88 
deperditus, Desm., 82 
— depressus, Desh., 88 
—- Deshayesianus, Bourg., 82 
diaphanus, Hald., 82 
—— Drovetianus, Bourg., n. sp., 92 
elegans, Sowerby, 88 
excentricus, Morelet, 85 
Fabrei, Dup., 86 
Jilosus, Conrad, 82 
JSluviatilis, 83 
Frayssianus, Dup., 87 
JSuscus, C. B. Adams, 82 
Gayanus, D’Orb., 84 
— gibbosus, Bourg., 82 
— Gussonii, Costa, 89 
Haldemanii, Bourg., 83 
Havanensis, Pfr., 83 
— Hermanni, Fér., 89 
INDEX. 
Ancylus irroratus, Guilding, 83 
— Janii, Bourg., 83 
—- lacustris, Linn., 88 
luteolus, Parreyss, 86 
marginatus, Richw., 83 
Matheronii, Boissy, 89 
meridionalis, Beck, 86 
— Moguinianus, Bourg., n. sp., 89 
— Moreletii, Bourg., 83 
—— Moricandi, D’Orb., 84 
navicula, Spix, 84 
— Nuttallii, Hald., 89 
obliquus, Broderip, 84 
—— oblongus, Charpentier, 83 
oblongus, Parreyss, 89 
obscurus, Hald., 84 
—— obtusus, Morelet, 84 
— Orbignyanus, Bourg., 84 
parallelus, Hald., 84 
Petitianus, Bourg., 85 
—— pileolus, Fér., 85 
radiatilis, Morelet, 85 
radiatus, Guilding, 85 
radiolatus, Kiister, 89 
Raymondii, Bourg., 85 
recurvus, Parreyss, 83 
riparius, Desm., 85 
rivularis, Say, 85 
rotundatus, Fér., 89 
rubicola, Puton, 87 
— Sauleyanus, Bourg., n. sp., 92 
— simplex, Buc’hoz, 86 
sinuosus, Brard, 87 
— spina-rose, Schmidt, 82 
stagnalis, Fér., 89 
striatus, Webb, 88 
strictus, Morelet, 88 
strigatus, Parreyss, 88 
— tardus, Say, 88 
— thermalis, Boubée, 87 
vitraceus, Morelet, 88 
Anguillide, 76 
Anostoma carinatum, Pfr., n. sp., 57 
Apollon, 37 
Aporrhaide, 41 
Aporrhais, 41 
Aporrhais pes-pelicani, 41 
Apteronotus, 75 
Apteronotus albifrons, Lacep., 75 
Architectoma, 39 
Architectomide, 39 
Aricia, 41 
Ascaris bifaria, Baird, n. sp., 19 
levissima, Baird, un. sp., 19 
osculata, 18 
— similis, Baird, n. sp., 18 
Asolene, 42 
Assiminia, 43 
Assiminia Grayana, 43 
Aulacorhamphus ceruleogularis, Gould, 
n. sp., 45 
