PROSOPEAS. 19 



ately oblique, narrowly acuminate-oval ; peristome simple, 

 acute, the right margin curved forward above the middle. 

 Columella slightly twisted, callously thickened. Length 15, 

 diam. 4.6 mm. (Mlldff.). 



Romblon. 



Prosopeas romblonicum MLLDFF., Nachrbl. D. M. Ges., 

 1896, p. 12. 



8. P. MACILENTUM (Reeve). PI. 5, fig. 32. 



Shell imperforate, oblong-turrited, very thin, smooth, pel- 

 lucid, glossy, greenish-hyaline ; spire turrited, obtuse. Whorls 

 6, slightly convex, the last about two-fifths the total length, 

 rounded basally; columella straightened, somewhat callous. 

 Aperture a little oblique, oblong-oval; peristome simple, un- 

 expanded, the right margin very slightly arcuate. Length 

 12.5, diam. 4, aperture 5x2 mm. (P/V.). 



Philippine Is. (Cuming). Cebu (Mlldff.) ; also Luzon 

 (Mlldff., var. luzonicum). 



Bulimus macilentus REEVE, C. Icon., v, pi. 79, f. 586. PFR., 

 Monogr., iii, p. 401. Stenogyra macilenta SEMPER, Reisen, p. 

 139. Prosopeas macilentum (Rve.), MLLDFF., Bericht Senck. 

 Ges., 1890, p. 247 ; Abhandl. Naturf orsch. Ges. Gorlitz, 1898, 

 p. 156, with var. luzonicum Mlldff., undescribed. 



The specimens taken in Cebu by Dr. von Mollendorff are a 

 little larger, length 14, diam. 5, aperture 5.5x2.5 mm. 



9. P. CAROLINUM (Martens). PI. 5, figs. 36, 37, 38. 



Shell elongate, arcuately lightly striatulate, slightly shin- 

 ing, buff, apex obtuse. Whorls 7, nearly flat, with subgradate 

 suture, close above which there is a band formed of a dark 

 brown incrustation; last whorl noticeably tapering towards 

 the base. Aperture scarcely one-third the total length, a 

 little oblique, acutely angular above, dilated below the middle, 

 the outer margin thin, unexpanded; columellar margin rather 

 wide, obliquely arcuate, pale, acuminate below. Length 22, 

 diam. 5.5, aperture 7x4 mm. (Martens}. 



Caroline Is.: Ruk, or Hogoleu (0. Finsch, Kubary). 



Stenogyra Carolina MARTS., Sitzungsber Gesellsch. natur- 



