COCHLOSTYLA OF MINDORO PROVINCE 



515 



Another specimen in our collection (U.S.N.M. no. 255798) is labeled 

 "Mindoro of Luzun", also collected by Colonel Mearns, a locality 

 that I have been unable to locate, but also on Mount Halcon. This 

 specimen has 6.3 whorls and measures: Length, 62 mm; greater 

 diameter, 31.5 mm. 



Another specimen without specific locality comes from the Cuming 

 collection. This is the largest of the races belonging to the group 

 with the protracted base. 



COCHLOSTYLA (CHRYSALLIS) ASPERSA BINUANGANA Bartsch 



Plate 112, Figure 5 



1932. Cochlostyla (Chrysallis) aspersa binuangana Bahtsch, Journ. Washington 



Acad. Sci., vol. 22, p. 342. 



1933. Helicoslyla (Chrysallis) mindoroensis furva Clench and Archer, Papers 



Michigan Acad. Sci., Arts, Letters, vol. 17, p. 546, pi. 58, fig. 3. 



Shell elongate-ovate; the first postnuclear whorls are smoky buff, 

 the remaining chocolate-color, the last turn being blackish chocolate- 

 brown. The interior of the aperture is pale blue; the peristome and 

 outer edge of the columella are blackish brown. The inner edge of 

 the columella is pale blue. The entire shell, except the first nuclear 

 whorl, is covered by a thin periostracum, crossed by hydrophanous 

 buff-colored bands, which cover the last whorl for the major part. 

 These hydrophanous markings are very irregular, sometimes almost 

 axial, sometimes fulgurated, sometimes blotched and spotted, and 

 they extend over both spire and base. There is an indication of a 

 dislocation of the bands at the periphery of the last turn. Nuclear 

 whorls 2.8; the first smooth, the next marked by incremental lines, 

 which on the last turn assume almost the strength of threads. The 

 postnuclear whorls are well rounded, appressed at the summit, and 

 marked by irregular threadlike incremental lines, which are retrac- 

 tively slanting. The whorls are also marked by microscopic, closely 

 spaced, spiral striatums, and the usual crisscross sculpture. The 

 periphery is obsoletely angulated. The base is rather long, some- 

 what inflated, well rounded. The aperture is broadly oval; the outer 



