COCH LOSTYLA-CHROMATOSPH^R A. 169 



narrowly expanded, fleshy-livid ; columellar margin forming a right 

 angle with the basal. ($.) 



Alt. 35-42, greater diam. 70, lesser 55 mill. 



Jjianga, Mindanao. 



C. cineracea C. SEMPER, Reis., p. 190, t. 9, f. 1. 



Stands between C. cryptica and C. garibaldiana. 

 C. DATAENSIS Semper. PI. 51, h'gs. 13, 14, 15. 



Imperforate, solid, depressed-globose ; surface roughened by spiral 

 sulci below, and obliquely descending wrinkles above. Chestnut-brown 

 unicolored, or having a yellow band at the periphery, the lower 

 edge of which is not sharply defined. 



Spire low-conoid, apex -obtuse. Whorls 4f, the last slightly de- 

 scending in front. Aperture wide, fleshy-white within ; lip well ex- 

 panded, subreflexed, flesh-colored ; columella wide, not deeply in- 

 serted, oblique, truncated below. Alt. 32, diam. 37 mill. 



Foot of Mt. Data, near the mines of Mancayan, Western Cordillera 

 of N. Luzon, at 5-6000 ft. alt. 



C. dataensis Q. SEMPER, Journ. de Conchyl. xiv, p. 152, t. 5, f. 1, 

 1866. C. SEMPER, Reis., p. 186, t. 8, f. 8, t.' 13, f. 17 (anatomy). 

 If. dataensis PER., Monogr. v, p. 283. 



The rudely sculptured surface is very characteristic, and shows 

 this species to be closely allied to the group of C. cryptica rather 

 than to the " Cochlostylce hypomelatme," where it is grouped by 

 Semper. 



Section VI. CHROMATOSPH^RA Pilsbry. 



Gruppe der Cochlostylce globosce SEMPER, Reisen, LandmolL, p. 

 181. 



The shell is imperforate, heliciform, depressed-globose solid and 

 opaque, richly colored, but lacking hydrophanous cuticle; suri'ace 

 lacking spiral sculpture ; last whorl scarcely descending at the aper- 

 ture. Lip blunt, usually very narrowly reflexed throughout ; col- 

 umella subvertical, deeply inserted, the umbilico-columellar area 

 covered with a concave white callus. Type, 0. aurata. 



Anatomy as in typical Cochlostyla. 



A small group of rare shells, confined to northern Luzon. It 

 is impossible to place these species in either Corasia, Calocochlea or 

 Pfeifferia; they form an independent group allied to these sections 

 and to Pachysphwra. 



