Partl . PHILIPPINE LAND SHELLS BABTSCH. 21 



side of the aperture and peristome bluish white ; outer lip reflected, 

 and slightly expanded; inner lip broadened at its insertion, which 

 fuses with the thin callus that covers the parietal wall, and reflected 

 over the narrow umbilicus. 



The type, Cat. No. 215580, U.S.N.M., was collected for Mr. Walter 

 F. Webb by Mr. I. Flores in southeastern Mindanao. I have 

 named it in honor of Mr. Flores at Mr. Webb's request. 



GROUP OF AMPHIDROMUS INFLATUS. 



The group of Amphidromus infiatus at present embraces six 

 species: A. infiatus Fulton, A. mearnsi Bartsch, A. pallidulus Pils- 

 bry, A. hidalgoi Bartsch, A. bilatanensis Bartsch, and A. calista 

 Pilsbry. The type-locality of the first is not known. A. pallidulus 

 comes from Zamboanga, Amphidromus mearnsi and calista from 

 Basilan, A. hidalgoi from Dapitan, Mindanao, and A. bilatanensis 

 from Bilatan Island. All of these forms have the narrow black band 

 in the suture on the early turns. All but calista Pilsbry are yellow ; 

 this may be white, yellow, or streaked with red or rose pink. It is 

 evidently the black, suprasutural band of the early whorls, which 

 caused Fulton and subsequent writers to ally the described forms 

 with maculiferus, but when one views the various races of maculif- 

 erus one sees readily that it would require considerable stretching 

 of the imagination to believe these shells mere races of that species. 



AMPHIDROMUS INFLATUS Fulton. 



Plate 1, fig. 3 ; plate 10, figs. 6, 7. 



Amphidromus maculiferus, var. Hidalgo, Journ. de Conch., vol. 36, 1888. 



p. 31, pi. 6, fig. 1. 

 Amphidromus maculiferus Smith, Ann. Mag. Nat. Hist., ser. 6, vol. 13, 1894. 



p. 55, in part. 

 Amphidromus maculiferus infiatus Fulton, Ann. Mag. Nat. Hist., ser. 6, 



vol. 17, 1896, p. 75. 

 Amphidromus maculiferus infiatus von Mollendorff, Abhand. Naturf. Ges. 



Gorlitz, vol. 22, 1898, p. 149. 

 Amphidromus maculiferus infiatus Pilsbry, Man. Conch., vol. 13, 1900, 

 p. 133. 

 Shell ovate; pale yellow; outer edge of the reflected lip sometimes 

 pale orange ; the first three whorls have the narrow black band im- 

 mediately above the suture. All the whorls are well rounded, ap- 

 pressed at the summit, marked by very strong, retractively slanting 

 lines of growth and very fine, weakly impressed, spiral striations. 

 Sutures feebly constricted. Aperture large, yellow within; the 

 slightly expanded and reflected outer, as well as the inner lip is 

 white; inner lip somewhat twisted, expanded at the base, and re 



