PHILIPPINE LAND MOLLUSKS 333 



1850. Bulimus monozonus Pfeiffer^ Martini-Chemnitz Conchylien Cabinet, 2d 

 ed., vol. 1, Abth. 12. Theil 2, 159, t. 46, figs. 7, 8. 



1851. Bulimus monozonus Reeve, Conehologia Iconica, pi. 32, fig. 195. 



1853. Bulimus monozonus Pfeiffer, Monographia heliceorum viventiurn, vol. 



3, p. 296. 

 1858. Bulimus monozonus H. and A. Adams, Genera of recent Mollusca, vol. 2, 



p. 142. 

 1S60. Orthostylus monozona Martens, Albers, Die Heliceen, 2d ed., p. 178. 

 1868. Bulimus monozonus Pfeiffeb, Monographia heliceorum viventiurn, vol. 



6. p. 6. 

 1868. Cocklostyla monozonus Pfeiffer, Monographia heliceorum viventiurn, 



vol. 6, p. 6. 

 1872. Orthostyla monozonus V. Martens, Malacozool. Bliit., vol. 20, p. 178. 

 1874. Cochlostyla monozona Semper, Reisen im Archipel der Philippines pt. 



2, vol. 3, p. 205. in part. 

 1876. Bulimus monozonus Pfeiffer, Monographia heliceorum viventiurn, vol. 8, 



in part. p. 7. 

 1876. Cochlostyhi monozona Pfeiffer, Monographia heliceorum viventiurn, vol. 



8, in part, p. 7. 

 1887. Cochlostyla rufogastcr Hidalgo, Journ. Conchyl., vol. 35, pp. 160-1, in 



part. 



1890. Cochlostyla rufogastcr Pilsbry, Man. Conch., ser. 2, vol. 6, pp. 207-8, in 

 part, pi. 45, fig. 47. 



1891. Cochlostyla rufogastcr Hidalgo, Obras Malacologicas, pp. 372-4. 



1894. Hclicostyla rufogastra monozonus Pilsbry, Man. Conch., ser. 2, vol. 9 r 



p. 227. 

 1896. Hclicostyla rufogastra monozonus Elera, Catalogo sistematico de toda la 



fauna Filipinas, vol. 3, p. 593, in part. 

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



p. 138, in part. 

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



im Archipel der Philippinen, vol. 10, pt. 14, p. 287. 



This is the small race said to come from Manila. Our specimens 

 show the pale yellow, rather broad peripheral zone when the perios- 

 tracum is removed. The shell is much more oval than in Cochlostyla 

 rufogaster antipotdna, and the periphery of the last whorl has the 

 merest indication of an angulation. 



/Specimens examined. — The specimen described and figured is one 

 of two, U.S.N.M. No. 66178, collected by J. B. Steere at Manila. It 

 has six whorls, and measures : Height, 49.2 mm ; greater diameter,. 

 35.3 mm. The other shell also has six whorls, and measures : Height, 

 48.2 mm; greater diameter, 37.7 mm. Two additional specimens 

 collected by Febiger, U.S.N.M. No. 105247, also come from Manila. 

 One of these is not quite adult. The adult shell has 5.9 whorls, and 

 measures : Height, 47 mm ; greater diameter, 34.2 mm. 



U.S.N.M. No. 315681 contains a specimen from the Evezard col- 

 lection, which belongs here. This has 5.7 whorls, and measures: 

 Height, 52 mm; greater diameter, 39.3 mm. 



