COCHLOSTYLA OF MINDORO PROVINCE 431 



coiled. The surface is covered by a thin hydrophanous periostracum. 

 The aperture is narrowly lunate. The columella is spirally twisted, 

 the edge of the twist forming a sublamellar fold. 

 Type: CocMostyla (Steatodryas) cepoides (Lea). 



COCHLOSTYLA (STEATODRYAS) CEPOIDES (Lea) 



Plate 100, Figures 6-8 



1840. Helix cepoides Lea, Proc. Amer. Phil. Soc, vol. 1, p. 174. 



1841. Helix (Helicoslyla) cepoides Sowerby, Proc. Zool. Soc. London, -1840, 



p. 88. 



1841. Helix cepoides Lea, Trans. Amer. Phil. Soc, new ser., vol. 7, p. 462, pi. 12, 



fig. 14. 



1842. Helix cepoides Reeve, Conchologia systematica, vol. 2, p. 70, pi. 164, 



fig. 14. 



1842. Helix cepoides Pfeiffer, Symbolae, vol. 2, p. 2. 



1843. Columplica dolium Hartmann, Erd- und Siisswasser-Gasteropoden der 



Schweiz, pp. 187-188, pi. 67, figs. 1, 2. 



1848. Helix cepoides Pfeiffer, Monographia heliceorum viventium, vol. 1, p. 302. 



1849. Helix cepoides Pfeiffer, Martini-Chemnitz Conchylien Cabinet, ed. 2, 



vol. 1, Abt. 12, Theil 1, p. 268, pi. 41, figs. 3, 4. 



1850. Pachya dolium Albers, Die Heliceen, ed. 1, p. 107. 



1851. HeHx dolium Reeve, Conchologia iconica, pi. 8, fig. 39. 



1851. Helix dolium Deshayes, Ferussac's Histoire naturelle . . . niollusques . . . , 



vol. 1, p. 312, pi. 108B, figs. 1, 2. 

 1853. Helix dolium Pfeiffer, Monographia heliceorum viventium, vol. 3, p. 207. 

 1S55. Stylodonta dolium H. and A. Adams, The genera of recent Mollusca, vol. 2, 



p. 187. 

 1856. Helix dolium Pfeiffer, Malakozool. Blatter, vol. 2, p. 139. 



1859. Helix dolium Pfeiffer, Monographia heliceorum viventium, vol. 4, p. 241. 



1860. Stylodon dolium Martens, Albers, Die Heliceen, ed. 2, p. 150 



1868. Helix dolium Pfeiffer, Monographia heliceorum viventium, vol. 5, p. 111. 



1876. Helix dolium Pfeiffer, Monographia heliceorum viventium, vol. 7, p. 358. 



1877. Cochlostyla dolium Semper, Reisen im Archipel der Philippinen, pt. 2, 



vol. 3, p. 181. 



1886. Nanina dolium Tryon, Man. Conch., vol. 2, p. 26, pi. 6, figs. 86, 87. 



1887. Helix dolium Hidalgo, Journ. Conchyl., vol. 35, p. 106. 



1888. Cochlostyla (Ptychostylus) cepoides Mollendorff, Nachr. deutschen 



malakozool. Ces., vol. 20, pp. 73, 74. 

 1891. Cochlostyla cepoides Pilsbry, Man. Conch., ser. 2, vol. 6, p. 194> pi. 48, fig. 

 69. 



1895. Helicostyla cepoides Pilsbry, Man. Conch., ser. 2, vol. 9, p. 226. 



1896. Ptychostylus cepoides Elera, Catalogo sistematico de toda la fauna de 



Filipinas, vol. 3, p. 588. 



1897. Cochlostyla cepoides Hidalgo, Journ. Conchyl., vol. 44, pp. 248, 270, 280, 



331, 340, 351. 



1898. Cochlostyla cepoides Mollendorff, Abh. Naturf. Ges. Gorlitz, vol. 22, p. 



134. 

 1901. Cochlostyla cepoides Hidalgo, Obras malacologicas, pp. 352-353, pi. 44, 



figs. 3-5. 

 1912. Cochlostyla {Columplica) cepoides Mollendorff, Kobelt, and Winter, 



Semper's Reisen im Archipel der Philippinen, vol. 10, pp. 266-267, pi. 



54, fig. 8. 



