22 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



fleeted over the narrow umbilicus which is sometimes closed by th«» 

 reflected callus ; parietal wall covered with a thin callus. 



Two specimens of this species (Cat. No. 99568 U.S.N.M.) bear the 

 label " Philippine Islands," without specific locality. They have six 

 whorls each, and measure — length, 58.6 mm.; diameter, 31.4 mm.: 

 and length, 55.5 mm. ; diameter, 30.2 mm., respectively. 



Fulton cites x Baranda, Philippine Islands, as the type-locality. 



AMPIIIDROMUS MEARNSI, new species. 



Plate 10, figs. 1, 2. 



Shell ovate, canary yellow, excepting the narrow dark band imme- 

 diately above the suture on the first three whorls and a narrow band 

 of white, which is separated from the summit by a band equaling the 

 white band in width, which agrees with the general coloration of the 

 surface. The whorls are well rounded, appressed at the summit, and 

 marked by well-expressed lines of growth, which almost suggest rib 

 striations and exceedingly fine spiral striations. Sutures moderately 

 constricted. Aperture quite large, oval; outer lip expanded and re- 

 flected; inner lip expanded at its insertion and reflected over the 

 narrow umbilicus ; parietal wall covered by a moderately thick callus ; 

 inside of the aperture and peristome white. 



The type (Cat. No. 245565, U.S.N.M.) was collected by Lieut. Col. 

 Edgar A. Mearns, at Atingating, northwest coast of Basilan Island. 

 It has six whorls and measures — length, 47 mm. ; diameter, 25.5 mm. 

 Cat. No. 245566, U.S.N.M., contains an adult specimen and a young 

 individual, also from Basilan. The adult has 6.5 whorls and meas- 

 ures — length, 55 mm. ; diameter, 28.7 mm. 



AMPHIDROMUS PALLIDULUS Pilsbry. 



Plate 10, figs. 3, 8. 



Amphidromus chloris Elera, Cat. Sist. Faun. Filip., 1896, p. 617, 

 Amphidromus chloris, var. pallidulus Pilsbry, Man. Conch., vol. 13, 1900, 

 pp. 143, 144, pi. 50, figs. 33, 34. 



Shell stout, sinistral, straw colored, with a narrow white zone a 

 little anterior to the suture. The nuclear whorls are marked with a 

 narrow dark zone at the suture. The succeeding turns are well 

 rounded, marked by numerous retractive lines of growth and very 

 fine spiral striations. Aperture large; outer lip provided with a 

 strong white peristome. Columella moderately long, expanded at the 

 base, the outer edge extending over the base and fusing with the 

 parietal callus. 



This description is based upon Doctor Pilsbry's cotypes, which 

 were collected by the Steere Expedition at Zamboanga, Mindanao. 

 They both have six whorls and measure — length, 45 mm. ; diameter, 



Um. Mag. Nat. Hist., ser. 6, vol. 17, 1896, p. 75. 



