AMPHIDROMUS, GROUP IV. 145 



Remarkable by its pure white color, very distinct spiral striation 

 and satin luster. Differs from A. maculiferus also by the shorter, 

 more obese contour, somewhat more convex whorls and comparatively 

 wider aperture. 



Fulton refers A. maculiferus var. of Smith (pi. 49, figs. 23, 24) r 

 from Bilatan I. (one of the southwestern or Tawitawi group of the 

 Sulus), to roeseleri. They are ** either pale lemon-yellow or pinkish- 

 white," from about 50 to 55 mill, long and all sinistral, according to 

 Smith. Fulton remarks " smaller than maculiferus^ of uniform 

 cream-color, with a very narrow golden band at suture of lower 

 whorls, very closely and (under the lens) distinctly spirally striated." 



Although A. roeseleri has been grouped with maculiferus by authors, 

 it may prove more closely allied to A. chloris of southwestern Min- 

 danao and Basilan, which is also umbilicated and, especially on 

 Basilan, densely though shallowly striated spirally. It is named for 

 a well-known collector of orchids in the East Indies. 



A. ENTOBAPTUS Dohrn. PI. 51, figs. 42-46. 



Shell sinistral, imperforate, conic-ovate, rather solid, striatulate, a 

 little shining; [deep yellow], pale citron or whitish, the apex and 

 sometimes a narrow sutural band white [or the whole shell white]. 

 Whorls 5^ to 6, a little convex. Aperture acuminate-oblong, deep 

 yellow within [or white in white specimens]; peristome thickened, 

 narrowly reflexed, white; columella vertical, straight. (Dohrn.} 



Length 46, diam. 27, aperture 24 mill. 



Length 44, diam. 29, aperture 26 mill. 



Length 47, diam. 27, aperture 26 mill. 



Length 43, diam. 24, aperture 25 mill. 



Paragua (Palawan): Puerto Pnncesa (Dr. Platen); Forest of Cani- 

 goran, near Puerto Princesa, white specimens from the same place ; 

 and the forest of Destacamento de Bahile (Quadras). Linaeakan, 

 Busuanga (var. gracilis) and Koran, Calamianes (var. contracta}. 

 Bolabac Id. (Everett). 



Amphidromus perversus L., HIDALGO, Journ. de Conchy 1. 1888, 

 p. 32 A. entobaptus DOHRN, Nachrbl. d. Malak. Ges. 1889, p. 62. 

 MOELLENDORFF, Verzeich. Phil. Land-moll., p. 148, with var. 

 grucilis and contracta (undescribed), 1898. SMITH, P. Z. S. 1895,. 

 p. ( J9 HIDALGO, Obras Malacologicas, in Mem. Real. Acad 

 Ciericias de Madrid, xiv, pi. 99, f. 5-8(1900) A, perversus var.. 

 entobapta FULTON, Ann. Mag. N. H. (6), xvii, p. 67 (1896). 

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