394 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



1841. Helix roissyana Sowerby, Proc. Zool. Soc. London, 1840, pp. 101-102; in 

 part. 



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



p. 249. 



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



vol. 1, Abt. 12, Theil 1, pp. 283-284 (in part), pi. 47, figs. 1, 2. 



1850. Helicoslyla roissyana Albers, Die Heliceen, ed. 1, p. 104. 



1850. Helix roissyana Desha yes, Ferussac's Histoire naturelle . . . mollusques 



. . . , vol. 1, pp. 297-298, pi. 104, figs. 2, 3; pi. 107, figs. 11-13. 



1851. Helix roissyana Reeve, Conchologia iconica, pi. 18, text; in part. 



1853. Helix roissyana Pfeiffer, Monographia heliceorum viventium, vol. 3, 

 p. 187. 



1855. Helicoslyla roissyana H. and A. Adams, The genera of recent Mollusca, 



vol. 2, p. 192. 



1856. Helix (Callicochlias) roissyana Pfeiffer, Malakozool. Blatter, vol. 2, p. 143. 



1859. Helix roissyana Pfeiffer, Monographia heliceorum viventium, vol. 4, 



p. 209. 



1860. Helicoslyla roissyana Martens, Albers, Die Heliceen, ed. 2, p. 175. 

 1868. Helix roissyana Pfeiffer, Monographia heliceorum viventium, vol. 5, 



p. 281. 



1876. Helix roissyana Pfeiffer, Monographia heliceorum viventium, vol. 7, 



p. 324. 



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



vol. 3, p. 185. 

 1887. Cochlostyla roissyana Hidalgo, Journ. Conchyl., vol. 35, pp. 146-147; in 



part. 

 1892. Cochlostyla roissyana Pilsbry, Man. Conch., ser. 2, vol. 7, pp. 151-152, 



pi. 30, figs. 25-27. 



1895. Helicoslyla roissyana Pilsbry, Man. Conch., ser. 2, vol. 9, p. 223. 



1896. Cochlostyla roissyana Elera, Catalogo sistematico de toda la fauna de 



Filipinas, vol. 3, p. 576; in part. 



1897. Cochlostyla roissyana Hidalgo, Journ. Conchyl., vol. 44, pp. 252, 254, 



258, 300, 312, 313, 316, 318, 334, 335, 341, 351. 



1898. Cochlostyla roissyana M Ollendorff, Abh. Naturf. Ges. Gorlitz, vol. 22, 



p. 122. 

 1901. Cochlostyla roissyana Hidalgo, Obras malacologicas, p. 465 (in part), pi. 50 



fig. 3; pi. 51, figs. 3-6; pi. 122, fig. 3. 

 1910. Cochlostyla roissyana Mollendorff, Kobelt, and Winter, Semper's 



Reisen im Archipel der Philippinen, vol. 10, pp. 204-205 (in part), pi. 



42, figs. 1, 2. 



1932. Cochlostyla (Calocochlea) roissyana roissyana Bartsch, Journ. Washington 



Acad. Sci., vol. 22, p. 335. 



1933. Helicoslyla (Calocochlea) roissyana Clench and Archer, Papers Michigan 



Acad. Sci., Arts, Letters, vol. 17, p. 540. 



Shell varying from subglobose to helicoid in shape. The early 

 whorls are of a little paler ground color than the later, which are 

 covered with a pale-yellow periostracum. In the specimen figured 

 by Ferussac (pi. 104, figs. 2 and 3) there is a brown zone at the summit 

 of the postnuclear turns, a narrow brown zone at the periphery, and 

 a dark zone about the umbilicus. The outer lip is also dark. At 

 variance with this we have specimens without the peripheral brown 

 band and others in which the peripheral brown band is much broader 



