PHILIPPINE LAND MOLLUSKS 335 



1858. Cochlostyla rufogaster H. and A. Adams, Genera of recent Mollusca, vol. 2, 

 p. 142. 



1859. Bulimus rufogaster Pfeiffer, Monographia heliceorum viventium, vol. 4, 

 p. 357. 



1859. Cochlostyla rufogaster Pfeiffer, Monographia heliceorum viventium, vol. 

 4, p. 853. 



1860. Orthostyla rufogaster Martens, Albers, Die Heliceen, 2d ed., p. 178. 



1867. Cochlostyla rufogaster Martens, Die preussisehe Expedition nach Ost.- 

 Asien, vol. 2, p. 92, in part. 



1868. Bulimus rufogaster Pfeiffer, Monographia heliceorum viventium, vol. 

 6, p. 6. 



1868. Cochlostyla rufogaster Pfeiffer, Monographia heliceorum viventium, vol. 



6, p. 596. 

 1874. Cochlostyla rufogastra Semper, Reisen im Archipel der Philippinen, pt. 2, 



vol. 3, p. 202, in part. 

 1876. Bulimus rufogastra Pfeiffer, Monographia heliceorum viventium, vol. 8, 



p. 6. 

 1876. Cochlostyla rufogastra Pfetffer, Monographia heliceorum viventium, vol. 



8, p. 682. 

 1883. Cochlostyla rufogastra Paetel, Catalog der Conchylien-sammlung, 2d ed., 



p. 97. 

 1887. Cochlostyla rufogaster Hidalgo, Journ. Conchyl., vol. 35, pp. 160-161, in 



part. 



1890. Cochlostyla rufogaster Pilsbry, Man. Conch., ser. 2, vol. 7, p. 207, in part, 

 fig. 7. 



1891. Cochlostyla rufogaster monozona Hidalgo, Obras Malacologicas, pp. 372-4, 

 in part, pi. 61, fig. 3. 



1894. Helicostyla rufogastra Pilsbry, Man. Conch., ser. 2, vol. 9, p. 227. 



1896. Orthostyla rufogaster Elera, Catalogo sistematico de toda la fauna Fili- 



pinas, p. 593, in part. 

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



p. 138, in part. 

 1912. Cochlostyla rufogastra Mollendorff, Kobelt and Winter, Semper's Reisen 



im Archipel der Philippinen, vol. 10, pt. 14, pp. 286-7, pi. 61, figs. 1, 2, in 



part. 



The only shell in our collection that resembles Lesson's figure (see 

 pi. 83, figs. 3 and 4) , is also a worn specimen that I collected at Mari- 

 veles, Bataan Province, Luzon (pi. 84, fig. 3). The harbor of Mari- 

 veles at the entrance to Manila Bay must have been visited often by 

 sailing vessels in the days of old, and it seems quite possible that the 

 shell described by Lesson from the collection of the Duke of Rivoli 

 may have come from there, and I shall so consider it here. It is also 

 possible that those cited by various authors as coming from Zambales 

 belong here. In fact this seems more than probable, since the Zam- 

 balesi mountain range is faunistically quite distinct, being well 

 separated from the mountains to the east by flat plains regions. 



The typical race is elongate-ovate. The early whorls in the de- 

 corticated shell are flesh colored, gradually tending toward rufous 



