356 



Plelix hemisphaerion Pfeiffer, in: Zeitschr. f. Malak. 1851, p. 15; M. Cli. II, 



t. 146, fig. 1, 2; MonogT. Helle. III, p. 184. 



Oochlostyla (Calicoclil.) hemisphaerion MöLLENDORFF, Yerzeichniss, Sep. p. 84. 

 Sibuyau. 



336. Cochlostjia (Coclilodrjas) calusaeusis Bartsch. 



Taf. LXXXII, Fig. 12. 



Shell depressed, conic to ovate, uiarked by fine, decidedly retractive lines of 

 growth and very fine, closely spaced, spiral striations. Ground color of the 

 first three whorls white, while that of the subsequenr whorls is suffused with 

 sage green on the base, with a band of greenish color in front of the suture 

 on the last whorl, which leaves a wliitish border on both sides of the median 

 brown band, or the whole ground color may be ncarly white of slightly 

 Aveathered. Beginning witii tlie second whorl, a faint broad brown spiral band 

 makes its appearance on tlie mittle of the space between the summit and tlie 

 periphery of the whorls, increasing steadily in intcnsity until it aequires a deep 

 chocolate brown on the last turn. A second brown band, equaling the above 

 in width, encircles the whorls immediately anterior to the periphery. Apei'ture 

 moderately large; columella oblique, white: peristome reflected, white. Colour 

 bands within the outer lip as intense as on the exterior. — Anfr. 4V2 — 5\2. 



Alt. 31, diam. max. 27, diam. min. 25,5 mm. 



Cochlostyla Calusaensis Bartsch, in: Proc. U. St. Nat. Museum 1913, vol. XLV, 



no. 1993, p. 550, t. 43, fig. 9, 10, 12—14. 



Calusa, Sarangani-Archipel. 



237. Codilostjla (Callicochlias) olauivaueusis Bartsch. 



Shell broadly depressed conic: entire surface marked by fine, decidedly retractive 

 lines of growth and very fine, closely spaced spiral striations. Ground color 

 white, slightly suffused with yellowish, or even white with a suffusion of light 

 russet vinaceous : the dark tint if present. is usually on the later whorls. In 

 addition to the ground color, the whorls are marked with a deep chestnut band 

 at the periphery; the summit of the succeeding turns leaving this exposed as a 

 suprasutural band. The extreme appressed summit of the whorls is also edged 

 with a very narrow zone of dark chestnut, which is usually covered by a 

 hydrophanous band, that extend over the posterior fourth of tlie space between 

 the summit and the periphery of the whorls. The rest of this space is covered 



