510 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



The specimen described and figured well represents the form de- 

 picted by Reeve. I am adding; a copy of Reeve's illustration (see 

 figure 15, Conchologia Iconica) for comparison. This specimen was 

 collected by von Mollendorff and bears only the label "Mindoro." It 

 has 6 whorls and measures: Length, 63.3 mm; greater diameter, 32.4 

 mm; lesser diameter, 28.5 mm. 



It probably came from the region of Puerto Galera. 



Eighteen specimens (U.S.N.M. no. 313705) received from Pedro de 

 Mesa were collected by him at Dulangan, Puerto Galera, and yield 

 the measurements given in the foregoing table. 



COCHLOSTYLA (CHRYSALLIS) ASPERSA MELANOGASTER (M8rch) 



Plate 112, Figure 4 



1841. Bulinus mindoroensis Broderip, Proc. Zool. Soc. London, 1840, pp. 84-86; 



in part. 

 ;1851. Bulimus mindoroensis Deshayes, F6russac's Histoire naturelle . . . mol- 



lusques . . ., vol. 2, pp. 15-16 (in part), p.l 149, fig. 9(?). 



1852. Chrysallis melanogaster Morch, Catalogus conchyliorum, quae reliquit 



Alphonso d'Aguirra y Gadea, Comes de Yoldi, vol. 1, p. 30. 



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



3, pp. 325-326; in part. 



1855. Bulimus mindoroensis Pfeiffer, Martini-Chemnitz Conchylien Cabinet, 



ed. 2, vol. 1, Abt. 13, Theil 1, pp. 202-203 (in part), pi. 57, figs. 4, 5. 

 1859. Bulimus mindoroensis Pfeiffer, Monographia heliceorum viventium, vol. 



4, pp. 387-388; in part. 



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



6, p. 34; in part. 



1876. Bulimus mindoroensis Pfeiffer, Monographia heliceorum viventium, vol. 



7, p. 49; in part. 



1892. Cochlostyla mindoroensis Pilsbry, Man. Conch., ser. 2, vol. 8, pp. 52-53 

 (in part), pi. 14, fig. 68. 



1895. Helicostyla mindoroensis Pilsbry, Man. Conch., ser. 2, vol. 9, p. 231; in 



part. 



1896. Chrysallis mindoroensis Elera, Catalogo sistematico de toda la fauna de 



Filipinas, vol. 3, pp. 611-612; in part. 



1897. Cochlostyla melanogaster Hidalgo, Journ. Conchyl., vol. 44, pp. 296, 298. 



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



p. 146; in part. 

 1901. Cochlostyla mmdoroensis Hidalgo, Obras malacologicas, pp. 548-550; in 



part. 

 1914. Cochlostyla mindoroensis melanogaster Mollendorff, Kobelt, and 



Winter, Semper's Reisen im Archipel der Philippinen, vol. 10, pp. 



336-338; in part. 



1932. Cochlostyla (Chrysallis) aspersa melanogaster Bartsch, Journ. Washington 



Acad. Sci., voh 22, p. 342. 



1933. Helicostyla (Chfysallis) mindoroensis Clench and Archer, Papers Michi- 



gan Acad. Sci., Arts, Letters, vol. 17, p. 544; in part. 



Shell rather small, slender, elongate-ovate. The nuclear whorls are 

 dark chocolate-brown, the succeeding turn bright chestnut-brown, 

 the last whorl blackish brown. A moderately strong periostracum 



