COCHLOSTYLA OF MINDOKO PROVINCE 433 



of the aperture and columella are bluish white, while the outer lip 

 is edged with pale brown. Nuclear whorls 1.6, well rounded, marked 

 by lines of growth only. The postnuclear whorls are inflated, strongly 

 rounded, and marked by retractively slanting lines of growth and 

 microscopic spiral striations, which are present on both spire and base. 

 As the suture is strongly constricted, the shell has a turbinate appear- 

 ance. Periphery well rounded. Base short, inflated, well rounded, 

 narrowly perforated; aperture lunate, narrow; outer lip expanded 

 and reflected; the columella with a strong twist, which gives it a 

 toothlike appearance. 



Lea's type was collected by Lt. W. W. Wood, and while the locality 

 is given as Philippine Islands, we now know that the species is restricted 

 to the Island of Lubang. 



The type (U.S.N. M. no. 116392) has 7 whorls and measures: 

 Length, 40.1 mm; greater diameter, 52 mm; lesser diameter 45.8 mm. 



Additional specimens yield the measurements given in the foregoing 

 table. 



Subgenus Helicobulinus Broderip 



In this subgenus the shell is large, globose-turbinate, and covered 

 with a hydrophanous periostracum of widely varied color. The 

 columella is more or less folded. 



Type: Cochlostyla (Helicobulinus) sarcinosa (Ferussac). 



COCHLOSTYLA (HELICOBULINUS) TURBO (Pfeiffer) 



Plate 100, Figures 1, 2 



1845. Helix turbo Pfeiffer, Proc. Zool. Soc. London, 1845, p. 64. 



1848. Helix turbo Pfeiffer, Monographia heliceorum viventium, vol. 1, p. 220. 



1849. Helix turbo Pfeiffer, Martini-Chemnitz Conchylien Cabinet, ed. 2, vol. 1, 



Abt. 12, Theil 1, p. 286, pi. 48, figs. 1, 2. 



1850. Bulimus (Orthostylus) turbo Albers, Die Heliceen, ed. 1, p. 136. 



1851. Helix turbo Reeve, Conchologia iconica, pi. 19, fig. 81. 



1851. Helix turbo Deshayes, Ferussac's Histoire naturelle . . . mollusques 



. . ., vol. 1, p. 318, pi. HOB, fig. 1. 

 1853. Helix turbo Pfeiffer, Monographia heliceorum viventium, vol. 3, p. 171; 



in part. 



1855. Cochlostyla turbo H. and A. Adams, The genera of recent Mollusca, vol. 2, 



p. 142. 



1856. Helicobulinus turbo Pfeiffer, Malakozool. Blatter, vol. 2, p. 145. 



1859. Helix turbo Pfeiffer, Monographia heliceorum viventium, vol. 5, p. 205. 



1860. Cochlodryas turbo Martens, Albers, Die Heliceen, ed. 2, p. 176. 



1868. Helix turbo Pfeiffer, Monographia heliceorum viventium, vol. 5, p. 274. 



1876. Helix turbo Pfeiffer, Monographia heliceorum viventium, vol. 7, p. 318. 



1877. Cochlostyla turbo Semper, Reisen im Archipel der Philippinen, pt. 2, vol. 3, 



p. 195. 

 1887. Cochlostyla turbo Hidalgo, Journ. Conchyl., vol. 35, p. 139; in part. 

 1892. Cochlostyla cinerascens turbo Pilsbry, Man. Conch., ser. 2, vol. 7, pp. 197- 



198, pi. 47, fig. 9. 

 1185—38 5 



