522 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



COCHLOSTYLA (CHRYSALLIS) CANICEPS MAITA Bartsch 



Plate 114, Figure 7 



1932. Cochlostyla (Chrysallis) caniceps maita Bartsch, Journ. Washington 

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



Shell rather large, elongate-ovate. The early nuclear whorls are 

 soiled flesh-color; the last one is pale buff, and from that the shell 

 grades on the last turn to the ground color, chestnut-brown. Over 

 this are placed irregular more or less interrupted zones of grayish 

 buff, which are best developed near the summit on the last turn; the 

 stronger markings disappear on the last half. The aperture is bluish 

 white, and the peristome is chocolate-brown with a purplish flush 

 except the interior portion of the outer lip at its insertion, which again 

 is flesh-color, while the parietal callus is pale brown. Nuclear whorls 

 3, the first smooth, the rest showing the markings of the postnuclear 

 turns. The postnuclear whorls are marked by irregularly developed, 

 closely spaced, retractively slanting, flattened threads and fine, ill- 

 defined, subobsolete spiral striations. In addition they are marked 

 by the usual crisscross microscopic sculpture, which cuts the lines of 

 growth obliquely. Aperture broadly ovate; outer lip broadly ex- 

 panded and reflected. The inner lip likewise broadly expanded and 

 reflected, particularly at its insertion where it almost covers the 

 umbilicus, leaving only a narrow chink. The parietal wall is covered 

 by a rather thick callus. 



The type (U.S.N.M. no. 20351a) was collected by the Exploring 

 Expedition presumably at the southern tip of Mindoro. It has lost 

 the first nuclear whorl. The 5.8 remaining measure: Length, 71 

 mm; greater diameter, 38 mm; lesser diameter, 29.6 mm. 



A young specimen from the same source is entered under the same 

 number. 



This race is also a member of the ovate-conic group and most 

 closely resembles C. caniceps contracostana but is much larger than 

 that form. The chocolate-brown peristome is also darker and of 

 more uniform color than in contracostana. 



COCHLOSTYLA (CHRYSALLIS) CANICEPS CONTRACOSTANA Bartsch 



Plate 114, Figure 2 



1932. Cochlostyla (Chrysallis) caniceps contracostana Bartsch, Journ. Washing- 

 ton Acad. Sci., vol. 22, p. 343. 



Shell elongate-ovate. The early nuclear whorls are flesh-color, the 

 last one pale buff, the succeeding turns gradually shade from this 

 to light brown and to dark chestnut-brown. In the lighter turns there 

 is a zone of light brown near the summit. In addition the whorls are 

 marked by retractively curved bands of pale buff or greenish buff. 



