118 COCHLOSTYLA-CORASIA. 



obliquely striated, decussated by spiral striae, some of which are 

 rather prominent, readily seen without a lens. When magnified 

 the surface is seen to be finely, obliquely corrugated in a direction 

 at right angles to the lines of growth. Whorls 4, the last somewhat 

 concave immediately above and below the keel, not descending in 

 front; columella surrounded by a conspicuous swelling or ridge. 

 Lip white, narrowly expanded, columellar margin dilated, arcuately 

 sloping. Alt. 13J, diam. 26 , lesser 21 mill. 



Mindoro, Philippines. 



Carocolla papyracea BROD., P. Z. S. 1841, p. 36. Helix papyra- 

 cea PFR. Symb. iii, p. 70; Conchyl. Cab., t. 52, f. 11, 12 ; Monogr. 

 i, p. 218. REEVE, Conch. Icon., f. 90. H. (Corasia) papyracea 

 HIDALGO, Obras Malacol. i, p. 147, t. 21, f. 1, 2. Cochlostyfa ( Cora- 

 sia) papyracea SEMPER Phil. Archip. Landmoll., iii, p. 168. MOLL., 

 Mai. Bl. (new ser.) x, p. 160 ; Landschn. Fauna Cebu, p. 229 (var. 

 dilatata) ? H. acutangula BURROW, Elem. Conch., t. 26, f. 1. 



This is like C. regince in form, but less depressed and more 

 swollen around the columella ; the color is a very light tint of buff, 

 faintly tinged with green. 



Var. DILATATA v. Moll. Larger and flatter than typical papyracea, 

 the keel more produced, last whorl more widened. Alt. 14, greater 

 diam. 31 mill. 



Zebu, Philippines. 



C. PSITTACINA Deshayes. PI. 25, figs. 49, 50, 51. 



Im perforate, orbiculate-depressed, thin, obliquely closely striate 

 and decussated with spiral striae visible under a lens, subpellucid, 

 shining ; greenish-buff above and below ; the middle of the last 

 whorl vivid blue ; spire convex, obtuse ; suture slightly impressed ; 

 w T horls 4J, slightly convex, the last more convex, subangular at the 

 periphery, not descending in front. Aperture oblique, subtrigonal- 

 elliptical ; peristome simple, thin, margins remote, the right margin 

 expanded, columellar margin arcuately sloping, compressed, dilated, 

 adnate, whitish. Alt. 15, greater diam. 25, lesser 19 mill. 



Cordillera of Palanan, Northern Luzon. 



H. psittacina DH., Journ. de Conchyl. 1861, p. 350, t. 16, f. 3-5. 

 PFR., Monogr. v, p. 285. Cochlostyla (Corasia) psittacina SEMPER, 

 Phil. Archip. Landmoll. iii, p. 172 (with var.) 



Allied to the group of C. regince by coloring and general form, 

 but differing in the more globose and obtusely keeled body-whorl. 



