492 



BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



This race differs from the other three races in being much darker 

 and in having the spiral sculpture decidedly more pronounced. 



The type (U.S.N.M. no. 313721) was collected by Pedro de Mesa 

 at Mayabig, Baco, Mindoro. It has 6 whorls and measures: Length, 

 70.1 mm; greater diameter, 42.3 mm; lesser diameter, 33.8 mm. 



The following specimens yield additional data: 



COCHLOSTYLA (CHRYSALL1S) ALBOLABRIS Bartsch 



1932. Cochlostyla (Chrysallis) albolabris Bartsch, Journ. Washington Acad. Sci- 

 vol. 22, p. 341. 



Shell of medium size. The nuclear whorls are flesh-color; the early 

 postnuclear whorls have a narrow zone of brown at the summit. The 

 later ones are of chestnut-brown ground color, marked by variously 

 slanting axial zones and figurations of yellowish buff, which extend 

 to the umbilical region in the last whorl. Interior of the aperture 

 bluish white, with the peristome white, bearing, however, at the very 

 edge a brownish zone. The early nuclear whorls are smooth; the 



