COCHLOSTYLA OF MINDORO PROVINCE 409 



COCHLOSTYLA (COCHLOSTYLA) HYDROPHANA HYDROPHANA (Sowerby) 



Plate 99, Figure 1 



1841. Helix (Cochlogena) hydrophana Sowerby, Proc. Zool. Soc. London, 1840, 



p. 88. 



1842. Bulimus hydrophana Pfeiffer, Symbolae, vol. 2, p. 46. 



1848. Helix hydrophana Pfeiffer, Monographia heliceorum viventium, vol. 1, 



p. 222. 

 1848. Bulimus hydrophana Reeve, Conchologia iconica, pi. 17, fig. 69. 

 1850. Helix hydrophana Pfeiffer, Martini-Chemnitz Conchylien Cabinet, ed. 2, 



vol. 1, Abt. 12, Theil 2, pp. 290-291, pi. 49, figs. 8, 9. 

 1850. Bulimus (Orthostylus) hydrophana Albers, Die Heliceen, ed. 1, p. 136. 

 1853. Bulimus hydrophanus Pfeiffer, Monographia heliceorum viventium, vol. 



3, p. 397. 



1859. Bulimus hydrophanus Pfeiffer, Monographia heliceorum viventium, 



vol. 4, p. 358. 



1860. Cochlodryas hydrophanus Martens, Albers, Die Heliceen, ed. 2, p. 176. 



1868. Bulimus hydrophanus Pfeiffer, Monographia heliceorum viventium, vol. 6, 



p. 6. 



1869. Helicostyla hydrophana Fratjenfeld, Verh. Zool. Bot. Ver. Wien, vol. 19, 



p. 875. 

 1877. Helicostyla hydrophana Pfeiffer, Monographia heliceorum viventium, 



vol. 8, p. 7; in part. 

 1887. Cochlostyla hydrophana Hidalgo, Journ. Conchyl., vol. 35, p. 148. 

 1892. Cochlosttjla hydrophana Pilsbry, Man. Conch., ser. 2, vol. 7, p. 187, pi. 36, 



figs. 35-37. 



1895. Helicostyla hydrophana Pilsbry, Man. Conch., ser. 2, vol. 9, p. 225. 



1896. Helicostyla hydrophana Elera, Catalogo sistematico de toda la fauna de 



Filipinas, vol. 3, p. 587. 



1897. Cochlostyla hydrophana Hidalgo, Journ. Conchyl., vol. 44, pp. 288, 331, 



335, 338, 339, 341, 350. 



1898. Cochlostyla metaformis Mollendorff, Abh. Naturf. Ges. Gorlitz, vol. 22, 



p. 124; in part. 



1901. Cochlostyla metaformis hydrophana Hidalgo, Obras malacologicas, p. 432, 

 pi. 77, figs. 2, 3; pi. 108, figs. 6, 7. 



1910. Cochlostyla (Dryocochlias) metaformis, Mollendorff, Kobelt, and Win- 

 ter, Semper's Reisen im Archipel der Philippinen, vol. 10, pp. 213-215. 



1932. Cochlostyla (Cochlostyla) hydrophana hydrophana Bartsch, Journ. Wash- 

 ington Acad. Sci., vol. 22, p. 336. 



Shell broadly ovate, covered with a thin hydrophanous periostra- 

 cum. Nuclear whorls 2, well rounded, forming a flattish apex. The 

 postnuclear whorls are inflated, strongly rounded, and marked with a 

 narrow light zone edging the summit, succeeded by a broad chocolate- 

 brown band, which in turn is followed by a still broader flesh-colored 

 zone that is succeeded by a band of brown equaling in intensity of 

 color and width that adjacent to the summit, which terminates anter- 

 iorly at the periphery. Adjacent to this the base bears a flesh- 

 colored zone, equaling the median one on the spire, and a median 

 chocolate-brown band equaling the supraperipheral band. There is 

 also a broad chocolate-brown area about the umbilicus, and the space 



