24 



Remarks on Classifications of 



* microdonta Desh. 

 Texasiana Moric. 

 Ariadnse Pfr.? 

 Hindsi Pfr. 

 oppilata Mor. 



ventrosula Pfr. 

 hippocrepis Pfr. 

 auriculata Say. 

 uvulifera Shuttl. 

 avara Say. 



hirsute Say. 

 maxillata Gould, 

 stenotrema Fer. 

 Edgariana Lea. 

 spinosa Lea. 

 monodon Rack. 



16. Stenotrema Raf. 



Type. H. spinosa Lea. 



germana Gould, 

 pustula Fer. 

 leporina Gould. 

 Lecoutii Lea 



is loricata Gould. 

 barbigera Redf. 



17. Triodopsis Raf. 



Type. 



Rugeli Shuttl. 

 inflexa Say 



is infiecta Say. 

 loricata Gould, 

 clausa Say. 

 vultuosa Gould, 

 hopetoneusis Shuttl. 



II. palliata Say. 



fallax Say. 

 tridentata Say. 

 palliata Say. 



var. obstricta Say. 

 appressa Say. 

 divesta Gould. 

 elevata Say. 



18. Mesodon Raf. 



Type. H. albolabris Say. 



tbyreoides Say. 

 bucculenta Gould, 

 exoleta Binn. 



var. albolabris Say. 

 major Binn. 



is var. of albolabris Say. 

 profunda Say. 

 Sayi Binn. 



dentifera Binn. 



var. Roemeri Pfr. 

 mul tili neata Say 

 pennsylvanica Greeu. 

 Jugallsiana Shuttl. 



is Ingallsiana Shuttl. 

 Mitchelliana Lea. 



harpa Say. 



20. Acanthinula Beck. 

 Type. H. aculeata Mull. 



* The habitats given of H. microdonta are Key West and Bermuda. The Key 

 West shell has been described by me (Annals VII. 138) as H. Carpenteriana 

 The Bermuda shell has been distributed at If. delitescens Shuttl. in lilt. • it is I 

 believe, H. microdonta Desh. 



