414 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 

 COCHLOSTYLA (COCHLODRYAS) FLORIDA AUREOLA Bartsch 



Plate 99, Figure 11 



1932. Cochlostyla (Cochlodryas) florida aureola Bartsch, Journ. Washington Acad. 

 Sci., vol. 22, p. 337. 



Shell ovate, covered with a rather thick golden-yellow periostracum 

 on the last turn. This color gradually becomes paler posteriorly and 

 eventually merges into white on the first nuclear and postnuclear 

 turns. The usual light thread is present at the summit of the whorls 

 and is followed by a moderately broad dark chestnut-brown band. 

 The dark columellar area is also present. The base is slightly darker 

 than the portion between the periphery and the summit. The 

 interior of the aperture and the peristome are bluish white. Nuclear 

 whorls 1.7, well rounded, smooth except for incremental lines and fine 

 microscopic spiral striations on the last portion of the last turn. 

 The postnuclear turns are somewhat inflated, well rounded, appressed 

 at the summit, and marked by inconspicuous incremental lines and 

 closely spaced microscopic spiral striations, which are present on both 

 spire and base. The aperture is broadly oval, almost circular; the 

 peristome is expanded and reflected and the columella is slightly 

 excavated. 



The type (U.S.N.M. no. 313610) is one of three specimens obtained 

 by the Exploring Expedition, probably at the southern tip of Mindoro. 

 It has 5.4 whorls and measures: Length, 34.7 mm; greater diameter, 

 26.8 mm; lesser diameter, 23.9 mm. 



The two additional specimens (U.S.N.M. no. 7617) yield the follow- 

 ing measurements: Number of whorls, 5.6 and 5.4; length, 34.1 and 

 32.4 mm; greater diameter, 26.5 and 25.9 mm; lesser diameter, 23.2 

 and 23.3 mm, respectively. In shape this race reminds one of 

 Cochlostyla (Cochlodryas) florida signa but can at once be distinguished 

 from it by its heavier shell and entirely different coloration. 



COCHLOSTYLA (COCHLODRYAS) FLORIDA SIGNA Bartsch 



Plate 99, Figure 2 



1932. Cochlostyla (Cochlodryas) florida signa Bartsch, Journ. Washington Acad. 

 Sci., vol. 22, p. 337. 



The shell is very regularly ovate and very thin. The early whorls 

 are white, the later turns covered with an olivaceous-waxy periostra- 

 cum. There is a light narrow thread at the summit followed by a 

 narrow bright chestnut-brown band. The columellar area is also 

 bordered by a narrow bright chestnut-colored zone. The interior of 

 the aperture is bluish white, which is also the color of the peristome, 

 while the columella is white plus a dark spot at its junction with the 

 basal lip. Nuclear whorls 1.6, marked by lines of growth and on the 



