146 COCHLOSTYLA-CALOCOCHLEA. 



gin narrowly reflexed, forming an obtuse angle with the columella. 

 (Pfr.) Alt. 27, diam. 43 mill. 



Philippines. 



H. hemisphcerion PFR., Zeitschr. f. Mai. 1851, p. 15; Monogr, 

 iii, p. 186 ; Conchyl. Cab., p. 407, t. 146, f. 1, 2. 



C. SAMARENSIS Semper. PI. 34, figs. 1, 2 ; pi. 54, figs. 41, 42. 



Imperforate, globose, striatulate, chestnut or tawny, apex very 

 obtuse, usually white, sometimes ornamented with two chestnut 

 bands and an obsolete white band at the periphery. Spire globose ; 

 whorls 4, rapidly increasing, the last very large; columella oblique; 

 excavated, white. Aperture lunate-circular, milky or brown ; per- 

 istome widely reflexed, black-edged. (8.*) 



Alt. 34, greater diam. 46, lesser 35 mill. 



Pampan, Samar ; San Fernando, Sibuyan. 



C. samarensis C. SEMPER, Reis., p. 179, t. 10, f. 9 (shell) ; t. 13, 

 f. 15; t. 18, f. 12 (anatomy). HIDALGO, Journ. de Conchyl. 1887, 

 p. 136, t. 6, f. 1, 2. 



The typical form is thin, translucent, sometimes with, sometimes 

 without the narrow chestnut bands. A brownish tract surrounds 

 the white columella, and the reflexed peristome is brownish-black. 

 Upon all 3 examples there is a wide whitish and lacerated band at 

 the periphery, formed of the otherwise inconspicuous hydrophanous 

 cuticle. (&) 



Hidalgo describes three color-varieties : 



1. Shell chestnut, unicolored (pi. 54, fig. 42.) 



2. Shell tawny, columellar area and suture brown. 



3. Like the last, but periphery with a chestnut band (pi. 54, fig. 

 41.) 



Semper considered the following form a variety, but Hidalgo says 

 that it does not belong to the same species. 



Var. ? (pi. 34, figs. 3, 4). Shell much thicker ; peristome bluish- 

 white ; no dark columellar area. 



C. COCCOMELOS Sowerby. PI. 55, figs. 51-55. 



Imperforate, globose, rather solid ; lightly obliquely striated. 

 Ground color varying from dark chestnut-brown to olive-yellow, 

 generally unicolored, but sometimes banded ; suture white-margined. 

 Apical whorls pink or purple. Hydrophanous cuticle thin, evanes- 

 cent, often cut by spiral dark lines. 



