CHECK LIST OF ILLINOIS LAND SNAILS 



HELICINIDAE 39 



Hendersonia A. J. Wagner 39 



occulta (Say) 39 



POLYGYRIDAE 40 



Polygyra Say 41 



dorfeuilliana (Lea) 44 



Iridentata tridentala (Say).. . . 45 



tridentata frisoni F. C. Baker. 45 

 tridentala bidenlala F. C. 



Baker 45 



tridentala unidentata F. C. 



Baker 45 



tridentala edentilabris Pilsbry 45 



fraudulenta (Pilsbry) 46 



inflecta inflecta (Say) 47 



inflecta media Pilsbry 47 



inflecta edentate (Sampson) . . 47 



profunda profunda (Say) .... 48 



profunda efasciata Walker. . . 48 



albolabris albolabris (Say).. . . 49 



albolabris alleni (Wetherby).. 49 



albolabris dentata (Tryon). . . 49 



zaleta (Binney) 50 



mullilineala mullilineata (Say) 51 

 multilineata algonquinensis 



Xason 51 



multilineata alba Witter 51 



multilineata rubra Witter 51 



palliata (Say) 52 



obstricta (Say) 53 



appressa (Say) 54 



fosteri F. C. Baker 54 



elevata (Say) 55 



pennsylvanica (Green) 55 



thyroi'dus (Say) 56 



clausa (Say) 57 



sienotrema (Ferussac) 58 



hirsula (Say) 59 



monodon (Rackett) 60 



fraterna fraterna (Say) 61 



fraterna cava Pilsbry and 



Vanatta 61 



lepctrina Gould 62 



BULIMULIDAE 63 



Bulimulus Leach 63 



dealbatus (Say) 63 



ZONITIDAE 64 



Mesomphix Rafinesqixe 65 



cupreus (Rafinesque) 66 



friabilis (W. G. Binney) 67 



perlaevis vulgatus H. B. Baker 68 



Retinella (Shuttleworth) Fischer 69 



electrina (Gould) 69 



wheatleyi (Bland) 70 



rhoadsi (Pilsbry) 70 



indentata (Say) 71 



Hawaiia Gude 72 



minuscula (Binney) 72 



Paravitrea Pilsbry 73 



capsella (Gould) 73 



significans (Bland) 74 



Euconulus Reinhardt 75 



/m/i;m5 (MuUer) 75 



chersinus chersinus (Say). ... 76 

 chersinus polygyratus (Pils- 

 bry) 76 



Striatura Morse 77 



milium milium (Morse) 77 



milium meridionalis (Pilsbry 

 & Ferriss) 77 



Zonitoides Lehmann 78 



arboreus (Say) 78 



nitidus (Miiller) 79 



limatulus ("Ward" Binney).. 80 



Ventridens W. G. Binney & 



Bland 81 



ligerus (Say) 81 



demissus (Binney) 82 



EXDODOXTIDAE 83 



Anguispira Morse 84 



alter nata alter nata (Say) 84 



alternala carinata (Pilsbry & 



Rhoads) 85 



kochi (Pfeiffer) 85 



Discus Fitzinger 86 



cronkhilei anthonyi (Pilsbry) 86 

 patulus (Deshayes) 87 



Helicodiscus Morse 88 



parallelus (Say) 88 



singleyanus inermis H. B. 

 Baker 89 



Punctum Morse 90 



pygmaeum (Draparnaud). ... 90 

 HAPLOTREMATIDAE 91 



Haplotrema Ancey 91 



concavum (Say) 92 



PUPILLIDAE 93 



Gastrocopta Wollaston 94 



armifera armifera (Say) 96 



armifera similis (Sterki) 96 



armifera affinis (Sterki) ..... 96 

 armifera abbreviala (Sterki) . . 97 



contracta contracta (Say) 98 



contracta climeana Vanatta. . 98 



holzingeri (Sterki) 99 



pentodon pentodon (Say) 100 



pentodon gracilis (Sterki). . . . 100 

 tappaniana (C. B. Adams).. . 101 



corticaria (Say) 101 



procera procera (Gould) 102 



procera mcclungi (Hanna & 

 Johnson) 102 



Vertigo Draparnaud 103 



morsei Sterki 104 



ovata Say 105 



ventricosa (Say) 105 



elatior Sterki 106 



tridentata Wolf 106 



milium (Gould) 107 



Pupoides Pfeiffer 108 



marginatus (Say) 108 



Columella Westerlund 109 



edenliila (Draparnaud) 109 



STROBILOPSIDAE 110 



Strobilops Pilsbry 1 1 1 



labyrinthicalabyrinthica (Say; 111 

 labyrinthica virgo Pilsbry. ... 112 

 labvrinthica parietalis Pils- 



"bry 112 



affinis Pilsbry 113 



aenea aenea Pilsbry 114 



aenea micromphala Pilsbry.. 115 

 aenea spiralis Pilsbry 115 



[159] 



