52 COCHLOSTYLA-CHRYSALL1S. 



The spire is long, with slightly convex outlines and blunt apex ; 

 whorls 7 or 7 2, nearly flat, the last laterally compressed. Aperture 

 small, much less than half as long as the shell ; lip thin, very 

 broadly expanded ; columellar lip dilated ; parietal callus thin. 



Alt. 70, diam. 30 mill. 



Alt. 65, diam. 30 mill. 



Alt. 75, diam. 26 mill. 



Mindoro, Philippines. 



Bulinus chrysalidiformis SOWB., P. Z. S., 1833, p. 37 ; Conch. 

 Illustr., f. 28. BROD., P. Z. S., 1840, p. &6.Bulimu8 chrysalidi- 

 formis PFR., Monogr. ii, p. 76 ; Conchyl. Cab., p. 201,t.57,f. 1-3. 

 KEEVE, Conch. Icon., t. 4, f. 16. DH. in Fer., Hist., t. 149, f. 3-6, 

 10, 11. Bulimus usiulatus JAY, Catal., p. 19, t. 6, f. 1, 1839. B. 

 aspersus GRAT., Soc. Linn. Bord. xi, p. 421 (in part). C. antonii 

 SEMPER, Keisen, p. 223. 



The laterally-compressed body-whorl, the small aperture, pro- 

 duced at the base of the colurnella, and the more closed umbilicus, 

 are prominent characters separating this species from its allies. 



The typical form (pi. 14, fig. 64) of Sowerby's original description 

 has a pale straw-colored cuticle ornamented with a chestnut sutural 

 band which is spotted with hydrophanous light patches ; the lip and 

 columella are dark brown. A variation of this is shown in fig. 65, 

 representing a yellow form with white lip. 



Color-var. mtulata Jay (figs. 66, 67) has a dark chestnut or red- 

 chestnut ground-color fading on the spire, and it is striped with 

 broad hydrophanous creamy or yellowish longitudinal bands. 



Some specimens of this form are greatly elongated (fig. 67). The 

 outer lip usually shows a slight projection at the middle of its face, 

 produced by a short groove or furrow upon its reverse. 



Variety antonii Semper. Shell broader, uniform yellow with 

 white sutural spots; lip white or roseate, very broadly expanded 

 subreflexed. 



Alt. 67, diam. 42 mill. ; aperture, alt. 28, width 16 mill. 



C. MINDOROENSIS Broderip. PI. 14, figs. 68, 69, 70, 71 ; pi. 15, figs. 



1,2. 



Umbilicate, conic-elongated-ovate, solid, the surface nearly luster- 

 less, somewhat wrinkled by oblique growth-striae. Color dark 

 purple-brown (rarely light yellowish-brown) streaked longitudinally 

 with yellow or cream- white stripes, which are sometimes rather wide 



