NO. 2272. NEW LAND SHELLS FROM THE PHILIPPINES— BARTSCH. 303 



to this sculpture a number of ill-defined and irregularly spaced spiral 

 lirations are present, of which seven appear on the hist whorl of the 

 tyi^e, between the summit and the periphery. The ground color of 

 the shell varies from livid brown on the early turns to horn color on 

 the last. The surface is covered by a thin, deciduous periostracum, 

 which carries the characteristic color pattern of irregular, hydroph- 

 anous axial bands, alternated with darker bands of about the same 

 width. The arrangement of these bands is well shown in our figure 

 of the type. Periphery of the last turn strongly angulated. Base 

 moderately long, well rounded, marked like the surface of the spire. 

 Aperture irregularly semicircular, decidedly channeled anteriorly; 

 outer lip moderatel}^ reflected, marked by a very dark brown, almost 

 purplish-black border which pales to purplish where it joins the pale 

 blue satiny color of the interior: columella slightly concave, some- 

 what twisted, ahnost vertical, its inner edge reflected as a callus over 

 a small portion of the base. The color of this reflected portion agrees 

 with the dark edging of the outer lip ; parietal wall covered by a thin, 

 dark colored callus, which allows the olive color of the base to shine 

 through it. 



The type (Cat. Xo. 218401, U.S.N.M.) comes from Makabenga. 

 It has 7.5 Vv'horls and measures — altitude, 73; greater diameter, 35.3 

 mm. ; lesser diameter, 30 mm. 



In determining the systematic status of the present subspecies, it 

 has been necessary to revise the entire group of Cochlostyla carinata^ 

 which has brought forth a number of new forms which will be pub- 

 lished shortly. Of all the old and new so far seen, Cochlostyla caii- 

 nata lunai is the most broadly conic, the most strongly carinated, and 

 has the darkest border at the aperture. 



COCHLOSTYLA LUZONICA MAKABENGANA, new subspecies. 



Plate 18, figs. 1-3. 



Shell helicoid, whorls well rounded, marked by fine, decidedly 

 retractively slanting incremental lines and very fine, irregularly 

 spaced, incised spiral striations. Nepionic turns almost two and a 

 half, flesh colored; succeeding whorls turning rapidly darker, the 

 last blackish-brown. The surface of the post-nepionic turns is cov- 

 ered by a thin deciduous periostracum, which carries the character- 

 istic axial and spiral markings shown in our figure of the type. 

 Suture moderately impressed. Periphery of the last whorl well 

 rounded. Aperture large, dark brown at the inner edge, paling to 

 smoky bluish deep within; columella very oblique; it, as well as its 

 callus, white; parietal wall covered by a rather thin, translucent 

 callus. 



The type (Cat. No. 218404, U.S.N.M.), and a paratype in Mr. 

 Webb's collection, come from Makabenga. The type has five whorls 



