COCHLOSTYLA-HYPSELOSTYLA. 23 



In its typical form, C. carinatus is readily distinguished from C. 

 nympha by its larger size and pronounced keel ; but intermediate 

 specimens are numerous. 



As a varietal form the name dactylus may stand for the non-cari- 

 nated, highly variegated examples (fig. 54). 



Var. NYMPHA Pfr. PI. 13, figs. 60, 61. 



The form is oblong-turrited ; color a varying tint of brown, 

 darker on the base, fading on the spire, the suture generally having 

 a dark border, the columella encircled by an ill-defined dark patch. 

 The hydrophanous cuticle varies from creamy to brown ; it is more 

 or less streaked or torn into shreds lengthwise, and usually there 

 are wide flames springing from the sutures. The spire is flesh-col- 

 ored or purplish above. Whorls 62. Aperture white or flesh- 

 tinted inside; peristome slightly expanded, dark brown ; columella 

 white, vertical. 



Alt. 51, diam. 26 ; oblique alt. of aperture 24 mill. 



Alt. 47, diam. 24 ; oblique alt. of aperture 22 mill. 



San Mateo, prov. Manilla; Tabaco and Daraga, prov. Albay, 

 Luzon; Marinduque, Philippines. 



Bulimus nympha PFR., P. Z. S. 1842, p. 89 ; Monogr. ii, p. 13 ; 

 Conchyl. Cab., p. 170, t. 51, f. 3. REEVE, Conch. Icon., t. 8, f. 41. 

 DESH. in Fer., Hist. t. 145 A, f. 8, 4. Cochlostyla nympha 

 SEMPER, Reisen, Landmoll., p. 209. HIDALGO, Journ. de Conch. 

 1887, p. 170. 



Specimens before me recently collected in Marinduque are nearly 

 destitute of hydrophanous cuticle except for a series of golden spots 

 tesselating the dark sutural band. The columella is surrounded by 

 a wide, black-brown, sharply defined band. Periphery angular 

 (fig. 61.) 



C. TURRIS Semper. PI. 13, fig. 56. 



The young shell is turrited, imperforate, solid, brown, streaked 

 with a hydrophanous whitish-buff* cuticle. Spire much elevated, 

 apex rather acute ; whorls 82, but little convex, the last subangular. 

 Columella vertical, twisted. Aperture semioval ; peristome? 

 (Semper.) Alt. 92, diam. 37 mill. 



Near Satpat and Amberbuk, Iraya Mts. 



C. turris SEMP., Reis. Landmoll., p. 210, t. 9, f. 3. cf. HIDALGO, 

 Journ. de Conch. 1887, p. 170. 



