210 COCHLOSTYLA-ORTHOSTYLUS. 



pink with a black-brown edge ; columella very deeply inserted, 

 lilac-pink, expanding in a blackish callus. 



Alt, 64, diara. 46 mill. 



Alt. 57, diani. 42 mill. 



Boac, Gasan and Saban, Marinduque; Romblon, Philippines. 



C. marinduquensis HIDALGO, Journ. de Conch. 1887, p. 157. 

 Bulimus ivoodianus PFR., Conchyl. Cab., p. 171, t. 51, f. 5. REEVE, 

 Conch. Icon., f. 11. DH. in Fer., Hist., t. 110A, f. 7-9. NOT 

 Bulimus ivoodianus LEA,= C. reevei Brod. 



The peculiar coloration of this species readily distinguishes it 

 from all others, although it is quite variable. Some specimens are 

 uniform white ; others have the median and basal portions of the 

 body-whorl blackish-brown ; but the most frequent form is that re- 

 presented by fig. 48. 



This species has long been known under the name " C. woodiana 

 Lea," but Lea's species is a totally different shell. 



