COCHLOSTYLA OF MINDORO PROVINCE 527 



COCHLOSTYLA (CHRYSALLIS) CANICEPS MINUTA Bartsch 



Plate 114, Figure 3 



1932. Cochlostyla (Chrysallis) caniceps minuta Bartsch, Journ. Washington Acad. 

 Sci., vol. 22, p. 343. 



Shell very small, elongate-conic. The first two nuclear whorls are 

 flesh-color, the next pale buff gradually shading into the darker 

 chestnut-brown ground color of the last turn. In addition the shell 

 is marked by rather irregular, small, retractively slanting, axial streaks 

 of pale greenish buff. These are almost threadlike, but near the 

 summit of the turns they are gathered together into broader areas, 

 which give to this portion of the shell the aspect of being falsely 

 toothed. The base of the last whorl is a little darker than the spire 

 and demarked definitely at the periphery. The interior of the aper- 

 ture is bluish white. The peristome is pale chocolate-brown with 

 a bluish flush. The inner lip is bluish white with the same chocolate- 

 brown edging. Nuclear whorls 3, the first smooth, the second show- 

 ing fine crenulations near the summit and the last showing the sculp- 

 ture of the postnuclear turns. The postnuclear whorls are very feebly 

 shouldered at the summit, moderately rounded, and marked by re- 

 tractively curved, very irregular, roughish incremental threads, which 

 pass over the periphery to the umbilicus of the last turn. The usual 

 crisscross microscopic lines show wherever there is sufficient smooth- 

 ness for it to become apparent. The aperture is broadly oval; the 

 outer lip expanded and reflected ; inner lip also decidedly expanded at 

 its insertion and reflected over the umbilicus, which it almost covers. 

 The parietal wall is covered with a thin callus. 



The type (U.S.N.M. no. 313560) was collected by von Mollendorff 

 at Mansalay, Mindoro. It has 5.5 whorls and measures: Length, 

 46 mm; greater diameter, 25.2 mm; lesser diameter, 20.7 mm. 



Another specimen from the same source (U.S.N.M. no. 195431a) 

 has 6.1 whorls and measures: Length, 51.3 mm; greater diameter, 

 25.2 mm; lesser diameter, 21.2 mm. 



This race is most nearly related to C. caniceps caniceps but differs 

 from it by its much smaller size and its little shaggier sculpture. 



COCHLOSTYLA (CHRYSALLIS) NIGRICEPS Bartsch 



1932. Cochlostyla {Chrysallis) nigriceps Bartsch, Journ. Washington Acad. Sci., 

 vol. 22, p. 343. 



Shell elongate-ovate, with the base of the last whorl rather produced. 

 The nuclear whorls are chocolate-brown; the postnuclear whorls are 

 covered with a rather strong periostracum, which is marked by irregu- 

 lar zones and fulgurations of yellowish straw-color and brown. The 

 interior of the aperture is bluish white. The expanded peristome is 

 brown, fading to the bluish white on its inner margin. There is a 



