Page:Land Mollusca of North America (north of Mexico) Vol. I Part 1 i-276.pdf/6

VI CONTENTS

• 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)

• Title Page
• Preface

• Family V. Polygyridae

• Genus Trilobopsis
• Genus Triodopsis

• Subgenus Crpytomastix

• Genus Allogona

• Subgenus Dysmedoma

• Genus Vespericola

• Family VI. Sagididae

INDEX