# Land Mollusca of North America (north of Mexico)
## Volume I
### Part 1 (1939)

* Title Page
* Preface
* New Families, Subfamilies, Genera and Subgenera Defined in Volume I
* New Species, Subspecies and Formae Defined in Volume I, Part 1
* INTRODUCTION: Measurements and Colors — Illustrations — Types — References — Stages of growth — Species and Subspecies — Genera — Synoptic Key to new Genera of Part II
* SYSTEMATIC TREATMENT
      * Family I. Helicidae
            * Genus Helix
               * Subgenus Helix, s.s.
               * Subgenus Cryptomphalus
            * Genus Cepaea
            * Genus Otala
            * Genus Helicigona
            * Genus Theba
      * Family II. Helicellidae
            * Genus Hygromia
               * Subgenus Trichia
            * Genus Monacha
            * Genus Helicella
               * Subgenus Trochoidea
            * Genus Cochlicella
      * Family III. Helminthoglyptidae
         * SUBFAMILIY CEPOLIINAE
            * Genus Cepolis
               * Subgenus Hemitrochus
         * SUBFAMILIY HELMINTHOGLYPTINAE
            * Genus Monadenia
            * Genus Helminthoglypta
               * Subgenus Helminthoglypta s.s.
               * Subgenus Charodotes
            * Genus Micrarionta
               * Subgenus Micrarionta s.s.
               * Subgenus Eremarionta
               * Subgenus Xerarionta
               * Subgenus Plesarionta
         * SUBFAMILIY SONORELLINAE
            * Genus Sonorella
               * Subgenus Sonorella s.s. ​
               * Subgenus Masculus
               * Subgenus Sonoranax
               * Subgenus Mytophallus
         * SUBFAMILIY HUMBOLDTIANINAE
            * Genus Humboldtiana
      * Family IV. Camaenidae
         * SUBFAMILIY OREOHELICINAE
            * Genus Oreohelix
               * Subgenus Oreohelix s.s.
               * Subgenus Radiocentrum
         * SUBFAMILIY AMMONITELLINAE
            * Genus Polygyrella
            * Genus Ammonitella
            * Genus Polygyroidea
            * Genus Glyptostoma

### Part 2 (1940)Part 2 (1940)

* Title Page
* Preface
      * Family V. Polygyridae
            * Genus Trilobopsis
            * Genus Triodopsis
               * Subgenus Crpytomastix
            * Genus Allogona
               * Subgenus Dysmedoma
            * Genus Vespericola
      * Family VI. Sagididae
INDEX

### Part 2 (1940)

* Title Page
* Preface
      * Family V. Polygyridae
            * Genus Trilobopsis
            * Genus Triodopsis
               * Subgenus Crpytomastix
            * Genus Allogona
               * Subgenus Dysmedoma
            * Genus Vespericola
      * Family VI. Sagididae
INDEX

## Volume II
### Part 1 (1946)

* Title Page
* Preface
* New Subgenera, Species and Subspecies
* SYSTEMATIC TREATMENT
   * Suborder Sigmurethra
      * Family VII. Bulimulidae
         * SUBFAMILIY BULIMULINAE
            * Genus Bulimulus
            * Genus Drymaeus
         * SUBFAMILIY ORTHALICINAE
            * Genus Orthalicus
            * Genus Liguus
      * Family VIII. Urocoptidae
         * SUBFAMILIY UROCOPTINAE
            * Genus Cochlodinella
         * SUBFAMILIY MICROCERAMINAE
            * Genus Microceramus
         * SUBFAMILIY HOLOSPIRINAE
            * Genus Holospira
      * Family IX. Cerionidae
            * Genus Cerion
      * Family X. Achatinidae
         * SUBFAMILIY SUBULININAE
            * Genus Rumina
            * Genus Subulina
            * Genus Lamellaxis
            * Genus Opeas
         * SUBFAMILIY FERUSSACTINAE
            * Genus Cecilioides
      * Family XI. Oleacinidae
            * Genus Euglandia
            * Genus Varicella
      * Family XII. Haplotremaidae
            * Genus Haplotrema
      * Family Testacellidae
            * Genus Testacella
   * Superfamily Aulacopoda
      * Family XIII. Zonitidae
         * SUBFAMILIY EUCONULINAE
            * Genus Euconulus
            * Genus Guppya
         * SUBFAMILIY ZONITINAE
            * Genus Oxychilus
            * Genus Retinella
            * Genus Mesomphix
            * Genus Vitrinizonites
            * Genus Paravitrea
            * Genus Pilsbryna
            * Genus Pristiloma
            * Genus Hawaiia
         * SUBFAMILIY GASTRODONTINAE
            * Genus Gastrodonta
            * Genus Clappiella
            * Genus Ventridens
            * Genus Zonitoides
            * Genus Striatura
         * SUBFAMILIY VITRININAE
            * Genus Vitrina
* Supplement to Family Camenidae, Subfamily Ammonitellinae
            * Genus Megomphix
Index

### Part 2 (1948)

* Preface
* INTRODUCTION: Classification--Catalogue of Species and Subspecies--Nomenclature--Geographic Distribution
* SYSTEMATIC TREATMENT
   * Subclass Pulmonata (continued)
      * Order Stylommatophora
         * Suborder Sigmurethra
            * Family Helminthoglyptidae
                  * Genus Sonorelix
            * Family XIV. Limacidae
               * SUBFAMILY LIMACINAE
                  * Genus Limax
                  * Genus Deroceras
               * SUBFAMIIY MILACINAE
                  * Genus Milax
            * Family XV. Endodontidae
               * SUBFAMILY ENDODONTINAE
                  * Genus Anguispira
                  * Genus Discus
               * SUBFAMILY HELICODISCINAE
                  * Genus Helicodiscus
               * SUBFAMILY PUNCTINAE
                  * Genus Punctum
                  * Genus Radiodiscus
            * Family XVI. Arionidae
               * SUBFAMILY ARIONINAE
                  * Genus Arion
               * SUBFAMILY ANADENINAE
                  * Genus Prophysaon
                  * Genus Anadenulus
               * SUBFAMILY ARIOLIMACINAE
                  * Genus Ariolimax
                  * Genus Hesperarion
                  * Genus Zacoleus
               * SUBFAMILIY BINNEYINAE
                  * Genus Binneya
                  * Genus Hemphillia
            * Family XVII. Philomycidae
                  * Genus Philomycus
                  * Genus Pallifera
         * Suborder Heterurethra
            * Family XVIII. Succineidae
                  * Genus Oxyloma
                  * Genus Succinea
                  * Genus Quickella
         * Suborder Orthurethra
            * Family XIX. Strobilopsidae
                  * Genus Strobilops
            * Family XX. Pupillidae
               * SUBFAMILY GASTROCOPTINAE
                  * Genus Gastrocopta
                  * Genus Chaenaxis
               * SUBFAMILY PUPILLINAE
                  * Genus Pupoides
                  * Genus Pupilla
               * SUBFAMILY VERTIGININAE
                  * Genus Vertigo
                  * Genus Columella
               * SUBFAMILY NESOPUPINAE
                  * Genus Pupisoma
                  * Genus Bothriopupa
                  * Genus Sterkia
            * Family XXI. Vallonidae
                  * Genus Vallonia
                  * Genus Planogyra
                  * Genus Zoogenetes
            * Family XXII. Cionellidae
                  * Genus Cionella
      * Order Basommatophora
            * Family XXIII. Carychiidae
                  * Genus Carychium
      * Order Systellommatophora
            * Family XXIV. Veronicellidae
                  * Genus Veronicella
   * Subclass Prosobranchia
      * Order Mesogastropoda
            * Family XXV. Truncatellidae
                  * Genus Truncatella
            * Family XXVI. Pomatiasidae
               * SUBFAMILY CHONDROPOMATINAE
                  * Genus Chondropoma
                  * Genus Opisthosiphon
      * Order Archaeogastropoda
            * Family XXVII. Helicinidae
                  * Genus Helicina
                  * Genus Lucidella
                  * Genus Hendersonia
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