ACAVUS. 



L95 



Species of Acavus. 



hannastoma, Linn. 

 melanotragus, Born. 

 phoenix, Pfeiff. 



ponderosus, Pfeiff. 

 superbus, Pfeiff. 

 Waltoui, Ret ve. 



Sub-gen. tachea, Leach (Archelix, Albers. Cepsea, Held.). 



Shell imperforate, or with the umbilicus covered, globose or 

 depressly globose ; upper whorls flattened, the last convex and 

 somewhat tumid, deflexed at the aperture; peristome reflexed, 

 labiate, the columellar margin constricted, callous, often gibbous. 



alabastrites, Mich. 

 Arabicus, Terr. 

 atrolabiatus, Kri/n. 

 Codringtoni, Gray. 

 Constantinus, Forbes. 

 decorus, Adams and Peeve. 

 Dupotetianus, Terv. 

 Ehrenbergi, Bath. 

 Estella, DVrb. 

 globularis, Ziegl. 

 hieroglyphiculus, Mich. 

 hortensis, Miill. 

 Juilleti, Terv. 



lacteus, Miill. 

 Massylse, Man!. 

 nemoralis, Linn. 

 Puuicus, Morel. 

 Raspaillii, Payr. 

 senilis, Morel. 

 signatus, Fetus. 

 splendidus, Drap. 

 sylvaticus, Drop. 

 vermiculatus, MUU. 

 Vindobonensis, C. Pfeiff. 

 xanthodon, Anton. 



Sub-gen. phasis, Albers. 



Shell umbilicated, thin, depressed; spire slightly elevated, 

 base convex, whorls rapidly increasing ; peristome simple, acute, 

 columellar margin dilated, reflexed. 



Menkeanus, Pfeiff. 



