COCHLOSTYLA-CHLOR/F.A. 103 



C. CONSTRICTA Pfeiffer. PI. 22, figs. 16, 17. 



Imperforate, globose-depressed, solid not carinated ; yellow-white, 

 the apex white, body-whorl encircled by two chestnut-brown zones, one 

 above, the other below the rounded periphery, the upper one ascend- 

 ing the spire ; lip white or yellow within ; baso-columellar lip 

 straightened, thickened, not toothed within. 



Spire rather elevated, apex obtuse ; whorls 4, the last deeply de- 

 flexed toward the aperture, sometimes a little angular just above the 

 upper termination of the lip, broadly constricted behind the lip. 

 Surface obliquely striatulate, microscopically, densely, spirally, 

 striated. Aperture very oblique, oval-triangular ; lip very broadly 

 reflexed ; baso-columellar lip adnate, wide, thickened within, but 

 without a callus or tooth in the middle. 



Alt. 14*, diam, 22*, mill. 



Alt. 12, diam. 19 mill. 



Mindoro, Philippines. 



H. constricta PFR., P. Z. S. 1845, p. 39 ; Conchyl. Cab., t. 69, f. 

 21, 22 ; Monogr. i, p. 267 (not H. constricta Boub.). H. restricta 

 PFR., Mai. Bl. 1854, p. 258; Monogr. iv, p. 228. IT. stenopsis 

 MOQ.-TAND., Rev. et Mag. de Zool. 1856, p. 563. Chlorcea constricta 

 SEMPER, Reis. Phil. Land moll, iii, p. 228. 



Allied to C. paradoxa, but having the last whorl more deflexed in 

 front, and the baso-columellar lip without a central callous or 

 tooth. 



C. UNDINA Pfeiffer. PI. 22, figs. 8, 9. 



Imperforate, globose-turbinate, thin, smooth, shining, whitish- 

 hyaline; spire convex-conoid ;. whorls 5, a little convex, the last 

 shorter than the spire, slightly deflexed in front ; periphery obsoletely 

 angulated, base rather flattened. Aperture very oblique, truncate- 

 elliptical ; peristome thin, margins subconniving, the right margin 

 expanded, columellar lightly arcuate, flat, appressed. 



Alt. 14*, greater diam. 23, lesser 19 mill. (Pfr.) 



Philippine Is. 



H. undina PFR., P. Z. S. 1856, p. 34 ; Novit. Conch, i, p. 77, t. 

 21, f. 10-12 ; Monogr. iv, p. 208. 



Columellar lip more arcuate than in the two preceding species. 

 The shell before me is rather solid, and the lip is broader than 

 shown in Pfeiffer's figures. 



