204 COCHLOSTYLA-ORTHOSTYLUS. 



The spire is obtusely conoid ; apex obtuse. Whorls 5 1, the last 

 somewhat descending in front. Aperture quite oblique, bluish- 

 white inside ; lip narrowly reflexed, dark brown or edged with dark 

 brown ; columella subvertical, deeply inserted, flesh-tinted. 



Alt. 58, diam. 42 mill. 



Alt. 44, diam. 34 mill. 



Alt. 56, diam. 38 mill. 



Islands of Tieao, Masbate, northern Zebu, northern Negros, Philip- 

 pines. 



H. (Cochlostyld) ticaonica BROD., P. Z. S. 1840, p. 155. Bui. 

 ticaonicus PFR., Monogr. ii, p. 6 ; Conchyl. Cab. p. 175, t. 52, f. 1- 

 3. REEVE, Conch. Icon. f. 14. Cochlostyla ticaonica SEMPER, 

 Reisen, p. 202. HIDALGO, J. de C. 1887, p. 167. MLLDFF., Land- 

 schn. Cebu, p. 242. Bui. subglobosus LEA, Trans. Amer. Philos. 

 Soc. vii, p. 455, t. 11, f. 1 (young shell). 



This species is allied to C. daphnis, but it is shorter, with lower, 

 much more obtuse spire. 



The ground-color is sometimes dark below, decidedly lighter 

 above the periphery. The prevailing form upon the island Zebu 

 (figs. 26, 27) is small, with conspicuous longitudinal white stripes, 

 but few spiral lines or none. 



Color-form lutea.- PI. 62, fig. 25. 



With the typically colored examples of ticaonica, live others hav- 

 ing a light buff ground-color, overlaid with cuticle forming oblique 

 white streaks above, generally rusty-brown beneath. The lip is 

 white, its edge often flesh-pink. Columella purple-pink. 



C. LIGNARIA Pfeiffer. PI. 62, fig. 30 ; pi. 41, figs. 10, 11, 12, 13. 



Imperforate, turbinate-conic, solid. Ground-color uniform dark 

 chestnut, becoming lighter and then yellow-chestnut above, the apex 

 whitish. Hydrophanous cuticle wood-brown streaked with cream, 

 having a cream-white zone under the periphery, and few (fig. 10) or 

 many (fig. 12) dark spiral lines. 



Spiral conoidal, apex obtuse. Whorls 5i, the last somewhat de- 

 scending in front, obtusely angular at the periphery in front, the 

 degree of angulation varying from distinct to almost imperceptible. 

 Aperture quite oblique, nearly white inside ; peristome expanded 



