14 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 78 



the type the peripheral, median, and brown band at the summit are 

 present. Aperture rather effuse, peristome broadly expanded, thick- 

 ened, and reflected, white. 



The type. Cat. No. 312954, U.S.N.M., has 4.8 whorls and meas- 

 ures — height, 34.7 mm. ; greater diameter, 32.0 mm. ; lesser diameter, 

 27.0 mm. Seven additional specimens seem to vary little from these 

 dimensions. 



The type was collected by Cuming at Albay, Albay Province, 

 Luzon. 



In one of our specimens the median spiral band of brown is absent, 

 while in another it is indicated by a mere trace. Still another indi- 

 vidual lacks all bands. 



This is the smallest of the known races excepting Cochlostyla per- 

 similis acryhia from which it can be distinguished at a glance by 

 its different form. 



COCHLOSTYLA PERSIMILIS PHARCIDA, new subspecies 



Plate 6, Figures 4-b 



Shell small, thin, ovate. Early whorls white, grading gradually 

 through yellow to olivaceous yellow in the last part of the last turn. 

 An obscure, narrow, darkish area is present in the umbilical region, 

 while the peripheral band is also faint and the median and band 

 at the summit are scarcely indicated. Aperture effuse anteriorly, 

 peristome expanded, thickened and reflected, with the interior of 

 aperture bluish-white. The real distinguishing feature of this race, 

 however, is the decidedly malleated surface of the last rurn. 



The type. Cat. No. 105286«, U.S.N.M., comes from Albay Province, 

 Luzon. It has 5 whorls and measures — height, 37.3 mm.; greater 

 diameter, 31.5 mm. ; lesser diameter, 26.4 mm. 



The malleated surface combined with the ovoid shape will differen- 

 tiate this from the other race. 



COCHLOSTYLA PERSIMILIS DONSALANA Bartsch 



Plate 7, Figures 1-3 



1918. CocTiostyla miraMlls donsalana Bartsch, Proc. Biol. Soc. Wash., vol. 31, 

 pp. 153-4. 



Shell elongate-ovate, moderately thick, early whorls white, grad- 

 ing through wax yellow to pale olive at the aperture. The shell 

 may be without bands, or a mere line of brown may be present at 

 the summit and another halfway between this and the periphery. 

 No dark area bounds the umbilicus. Aperture very oblique and 

 effuse anteriorly ; peristome expanded and reflected, white. Interior 

 of aperture bluish- white. 



