134 COCHLOSTYLA-CALOCOCHLEA. 



The surface is nearly smooth. Whorls 5, the last one scarcely 

 or slightly deflexed in front. Aperture white within, rounded-lunar ; 

 peristome reflexed throughout, white, often edged with flesh-color. 

 Columella deeply entering, gently arcuate. 



Alt. 31, diam. 35 mill, (average specimen). 



Alt. 31, diam. 43 mill, (large thin specimen from Luzon ; mouth 

 deep pink within). 



Alt. 26, diam. 31 mill, (small buff specimen). 



H. pulcherrima SOWB., P. Z. S. 1840, p. 90. REEVE, Conch. 

 Syst. ii, t. 164. f. 12, 13; Conch. Icon. f. 26. PFR., Monogr. i, p. 

 250 ; Conchyl. Cab. t. 45, f. 1-4. DELESSERT, Rec. de Coq. t. 38, 

 f. 11, 12, 15, 16. Oalocochlea pulcherrima HARTM., Gastr. Schweiz, 

 i, p. 163, f. 54. Cochlostyla pulcherrima Semper, Reis., p. 174, 1. 13, 

 f. 9;t. 18, f. 16 (anatomy). HIDALGO, Journ. Conch. 1887, p. 

 126. H. f estiva MORCH., not Donovan. 



The ground-color is extremely variable, every shade between 

 light buff or light olive-green and deep maroon being represented. 

 It is nearly uniform in tint, becoming pink on the earlier whorls in 

 most specimens. In about one-third of the specimens before me 

 there is a narrow dark band bordering the columella, generally not 

 very distinct. In any of the color-forms, from light to dark, bands 

 of close spots of hydrophanous cuticle are frequently developed. 

 The supraperipheral hydrophanous band is the most constant and 

 prominent. 



C. FESTIVA Donovan. PI. 52, fig. 25 ; pi. 35, figs. 11-16. 



Imperforate, globose, somewhat depressed, the spire generally 

 rather conoidal ; solid; ground-color (beneath the hydrophanous 

 cuticle) dark reddish-chestnut, sometimes yellowish-chestnut, usu- 

 ally with a light peripheral girdle. Covered with a cream-colored 

 or light brown cuticle, with a white zone at periphery. 



The hydrophanous cuticle is often closely streaked obliquely, and 

 generally has some or many spiral dark lines. The apical whorls 

 are pink or purple-pink. Whorls 4|-5, convex. Aperture wide- 

 lunar, pink or white inside ; peristome broadly reflexed, typically 

 bright pink, but often white, with or without a pink edge. Colu- 

 mella pink or white, broad, irregularly arcuate. 



Alt. 29, diam. 35 mill. 



Alt. 38, diam. 44 mill. 



Province of Cagayan, Luzon, Philippines* 



