444 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



COCHLOSTYLA (HYPSELOSTYLA) CINCINNIFORMIS CABRASENSIS Bartsch 



Plate 101, Figure 10 



1932. Cochlostyla (Hypselostylus) cincinniformis cabrasensis Bartsch, Journ. 

 Washington Acad. Sci., vol. 22, p. 338. 



Shell very regularly conic, of white ground color with a narrow brown 

 band making a feeble beginning on the second postnuclear whorl and 

 increasing in width and intensity of coloration after this. Another 

 brown band immediately posterior to the periphery begins at a similar 

 place and also increases in strength and coloration with the increasing 

 whorls. There is likewise a broad basal brown area about the columel- 

 lar region. This and the peripheral band on the last turn are dark 

 chocolate-brown, while the ones at the summit are somewhat paler. 

 These bands are crossed by fine hydrophanous axial lines on the last 

 turn. The interior of the aperture is bluish white, showing conspicu- 

 ously the bands within, the basal region being dark, rendering the 

 outer lip dark to its edge at that portion of the shell, the columella 

 being white and the outer lip soiled white. Nuclear whorls 2, well 

 rounded, marked by incremental lines. Postnuclear whorls almost 

 flattened, marked by rather strong, retractively slanting, incremental 

 lines and microscopic, closely spaced, spiral striations, which are 

 present on both spire and base. Periphery feebly angulated; aperture 

 oblique, subquadrate; outer lip thin, slightly reflected. Columella 

 narrow, slightly excavated. 



The type (U.S.N.M. no. 313639), collected by Quadras on Cabra 

 Island, has 5.6 whorls and measures: Length, 43.2 mm; greater diam- 

 eter, 30 mm; lesser diameter, 25.8 mm. 



This is distinguished from the other subspecies by having the 

 brown bands much brighter and the light areas intensely bluish 

 white. 



COCHLOSTYLA (HYPSELOSTYLA) CINCINNIFORMIS LUBANENSIS (Clench and Archer) 



Plate 101, Figure 5 



1841. Helix cincinniformis var. a Sowerby, Proc. Zool. Soc. London, 1841, 



pp. 17-18. 

 1851. Bulimus cincinniformis Deshayes, Ferussac's Histoire naturelle . . . 



mollusques . . ., vol. 1, pp. 45-46 (in part), pi. 151, figs. 5, 6. 

 1912. Cochlostyla cincinniformis Mollendorff, Kobelt, and Winter, Semper's 



Reisen im Archipel der Philippinen, vol. 10, pp. 262-263 (in part), 



pi. 53, fig. 5. 



1931. Helicostyla cincinniformis lubanensis Clench and Archer, Occ. Papers 



Boston Soc. Nat. Hist., vol. 5, pp. 334-335, pi. 17, fig. 1. 



1932. Cochlostyla {Hypselostylus) cincinniformis lubanensis Bartsch, Journ. 



Washington Acad. Sci., vol. 22, p. 338. 



Shell conic, covered by a pale straw-colored periostracum, which is 

 usually worn off of the early whorl ; when worn off of the later turns the 



