NORTH AMERICAN CONCHOLOGY. 



24T 



No. 



60 TJnio verrucosus Barnes. 



U. tuherculata Raf. 

 graniferus Lea. 



61 Alasmodonta calceola Lea. 



A. deltoidea Lea. 



62 complanata Barnes. 



63 rugosa Barnes. 



A. costata Raf. 



64 truncata Say. 



65 Anodonta edentula Say. 



A. areolata Swainson. 



66 Ferussaciana Lea. 



67 imbecilis Say. 



A. incerta Lea. 



68 pavonia Lea. 



A. Wardiana (rare) Lea. 



69 plana Lea. 



A. decora (young) Lea. 

 grandis Say. 

 Ancylus rivularis Say. 



1 Helix albolabris Say. 



2 alternata Say. 



3 appressa (rare) Say. 



4 arborea Say. 



5 chersina (rare) Say. 



6 clausa Say. 



7 concava Say. 



8 diodonta (rare) Say. 



9 elevata Say. 



10 electrina Gould. 



11 fallax .S'«^. 



12 fraterna Say. 



13 fuliginosia (rare) Griffith. 



14 glaphyra (rare) Say. 



15 hirsuta Say. 



16 indentata Say. 



17 inflecta Say. 



18 Inoruata Say. 



19 intertexta (rare). 



20 interna Say. 



21 labyrinthica Say. 



22 monodon Binney. 



JL Leaii. 



23 ligera -Say. 



24 limatula (rare). 



No. 



25 Helix lineata (rare) Say. 



26 minuta Say. 



H. pulchella Binuey. 



27 miniuscula Lea. 



28 minutissima Lea. 



29 multilineata Say. 



30 Miclielliana Lea. 



31 Pennsylvanica Green. 



32 perspectiva Say. 



33 palliata Say. 



34 profunda 5«^. 



35 ruderata Binney. 



H. striatella Athony. 



36 solitaria Say. 



37 suppressa (rare) Say. 



38 tliyroidea Say. 



39 tridentata Say. 



40 zaleta Say. 



1 Pupa armifera -Sa^. 



2 exigua 5o^. 



3 ovata Say. 



4 pentodon 5a^. 



5 (unkuown). 



1 Succinea aurea Lea. 



2 obliqua Say. 



3 vermetus Say. 



1 Planorbis armigerus /Sa^/* 



2 bicarinatus ''5'a_(/. 



3 lens Lea. 



4 leutus 5ay. 



5 parvus Say. 



6 trivolvis /V'/y. 



1 Cyclostoma lapidaria Say. 



2 Cincinnatiensis Curlcy. 



1 Physa elliptica Lea. 



2 heterostropha <S'«^. 



3 aurea Lea. 



1 Lymnea desiduosa Say. 



2 el odes iS^^. 



3 exilis Lea. 



1 Melania canaliculata Say. 



2 conica Say. 



3 depygis Say. 



4 undulata /Say. 



5 Sayii Wood. 



