496 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



expanded and reflected; that of the inner lip very broad at the insertion 

 of the columella and reflected over the umbilicus, which appears only 

 as a chink. A moderately thick callus connects the columella with 

 the outer lip on the parietal wall. 



The specimen described and figured (U.S.N.M. no. 315638) is one 

 of two from the Evezard collection and is without specific locality 

 data. It has 7 whorls and measures: Length, 68.5 mm; greater diam- 

 eter, 36.1 mm. The other specimen has 6.9 whorls and measures: 

 Length, 64 mm; greater diameter, 35.7 mm. 



This race can readily be distinguished from the next by its much 

 more ovate outline and more inflated whorls. 



COCHLOSTYLA (CHRYSALLIS) ANTONI MACILENTA Bartsch 



Plate 111, Figure 2 



1914. Cochlostyla anioni Mollendorff, Kobelt, and Winter, Semper's Reisen 



im Archipel der Philippinen, vol. 10, pi. 75, fig. 8. 

 1932. Cochlostyla (Chrysallis) antoni macilenia Bartsch, Journ. Washington 



Acad. Sci., vol. 22, p. 341. 



Shell very elongate-ovate, thin. The early whorls are flesh-color 

 gradually changing to pale lemon-yellow, marked by feeble, retrac- 

 tively slanting, axial, hydrophanous bands, which sometimes assume 

 the form of figurations, and by very fine vermiculations, which are 

 more or less axially disposed, a character in which this race resembles 

 the races of Cochlostyla electrica. A very thin periostracum covers 

 the entire surface of the shell. Nuclear whorls 3; the first is well 

 rounded ; from the second on, slender axial lines of growth become 

 apparent. The postnuclear whorls are very slightly rounded, ap- 

 pressed at the summit, and marked by feeble, retractively slanting, 

 somewhat wavy, lines of growth, which vary considerably in strength 

 and spacing. There are also feeble, irregularly disposed, incised, 

 spiral lines present, as well as the microscopic crisscross lines passing 

 obliquely over the lines of growth. All these elements are present 

 on spire and base. Periphery well rounded. The base is well 

 rounded. Aperture broadly oval; peristome broadly expanded and 

 reflected; the inner lip also broadly expanded, very much so at its 

 insertion, where the reflected portion almost covers the umbilicus, 

 leaving only a chink. The parietal wall is covered by a thick white 

 callus. 



The type (U.S.N.M. no. 313551) was collected by Quadras at Sitio 

 Brucaan, Mangarin, Mindoro. It has 6.9 whorls and measures: 

 Length, 63 mm; greater diameter, 32.4 mm. 



This subspecies can readil} 7 be distinguished from Cochlostyla anioni 

 antoni by its much slenderer form and also by the presence of ver- 

 miculations alluded to, which may some day cause it to be considered 

 a distinct species. 



