524 



The Molluscan Family Planorhidae 



dispersal of species 39 

 distribution 37 

 Drcpanotrema 21, 47, 49, 114 



ecology 17 



egg gland 6 



embryological development 25 et seq. 



environmental conditions 17 



error in generic reference 202 



eupyrene spermatozoa 7 



excitatory oi'gan 8 



eyes 3 



Fasciola 22 



Fasciolopsis 22 



Faust 21, 22, 24, 31 



figured specimens, repositories of, 216 



floridcnsis, Menetus dilatatus, n. var. 232 



flukes 21 



food, for other animals 19 



habits 19 

 foot 3 



foreword to Part II 215 

 Fossaria 22 

 Fossulorbis 47, 49. 118 



ganglia 14 



genera recognized 48 



wrongly referred 202 

 genus new in this volume 



Pingielln 109 

 geographical distribution 38 

 geological history 37 

 gizzard 9 



groups of uncertain affinities 192 

 growth lines 16 

 Gyraulus 17, 22, 46, 48. 65 



haemocyanin 13 



haemoglobin 13 



haemol^•ml1h 13 



Haldcmanina 49, 177 



head 3 



Helicorbis 22, 49, 106 



Helisoma 47, 49, 123 



anceps anticostianum, n. var. 219 

 anceps bartschi, n. var. 219 

 anceps idahoense, n. var. 220 

 anceps politum, n. var. 221 

 binneyi randolphi, n. var. 221 

 campamdatum dalli, n. var. 226 

 campanidatum pleistocenicum, n. var. 



226 

 campanidatum rideauense, n. var. 227 

 caribaeum cubense, n. var. 222 

 columbiense , n. sp. 222 

 kennicotti, n. sp. 223 

 pilsbryi preblei, n. var. 224 

 subcrenatum perdisjunctum, n. var. 224 

 trivolvis marshalli, n. var. 225 



Helisomatinae 5, 123 

 key to genera of, 47 



hermaphrodite duct 5 



Heterodiscus 48, 88 

 Hippeutis 47, 49, 100 

 hi.story of classification 41 

 Hoffman 22, 23 

 Holmes 25 

 hosts 21 



idahoense, Helisoma anceps, n. var. 220 



Indoplanorbis 196 



intermediate teeth 11 



internal anatomy 4 



intestine 9 



Intha 47, 49, 112 



Jankowski 23, 54, 60. 69 

 jaw 10 



kennicotti, Helisoma, n. sp. 223 

 keys to groups 46 



to genera 46 et seq. 



to subfamilies 46 

 kidnev 12 

 Krull 31 



labiatns, Menetus, n. sp. 232 



lacunae 13 



Lankester 25, 28 



Larambergue 5, 29 



Lateorbis. n. subgen. 47, 48, 85 



lateral teeth 11 



length of life 20 



life, length of 20 



lines of gi'owth 16 



lingual ribbon 11 



liver 9 



liver fluke 22 



locomotion 19 



Lowrance 25, 28 



Lutz 24 



Lymnaea 22 



Lj'mnaeidae, monograph of, ix, 16, 18, 19 



male organs 4 



mantle collar 3 



marginal teeth 11 



marshalli, Helisoma trivolvis, n. \ar. 225 



Martins 24 



Mattox 12. 29 



memorial to Baker xvii 



Menetus 17, 23, 48, 49, 182 



Menetus color adoensis, n. sp. 230 



cooperi crassilabris, n. var. 230 



cooperi planospirus, n. ^•ar. 231 



dalli, n. sp. 231 



dilatatus floridensis, n. var. 232 



labiatus, n. sp. 232 



portlandensis, n. sp. 233 

 mesometamorphosis 1 1 

 Metagonimus 21 



Micromenetus, n. subgen. 48, 49, 187 

 migration 40 

 migratory birds 40 

 Miller 22 

 miracidium 21 

 moriihology 3 



