Occasional Papers of the Museum of Zoology 39 



lateral is viewed in profile (view labeled 2 in figure), this 

 shows as a blunt, rounded projection. Marginal: with a 

 series of recurved, lanceolate cusps, which decrease in size 

 towards the outer edge ; the edges of the outer ones pectinate 



Measurements 



Shell 



Peristome Aperture Whorls 



alt. maj.diam. min. diam. alt. diam. inside 

 Crosse and Bland; 



type, from figure 7.0 47(3.3) 34(2.4) 103(2.4) 22(1.5) 4 



C12, male; complete 8.8 40(3.5) 31(2.7) 30(2.6) 96(2.5) 17(1.5) 8i^ 



C15, male; complete 7.2 44(3.2) 35(2.5) 32(2.3) 96(2.2) 19(1.4) 7 



C5. Living specimens rare (19 collected). 



C6. Very infrequent (12 specimens). 



Cllcd. Frequent (84 specimens). 



C12. Frequent (42 specimens). 



C15. Quite common (82 specimens). One albino female. 



C17. Quite common (94 specimens). 



C20. Quite infrequent (10 specimens). 



