AMPHIDROMUS, GROUP XI. 197 



which probably belongs to xiengensis rather than to flavus, if indeed 

 the whole series does not intergrade. 



A. FULTONI Ancey. PL 63, figs. 83, 84. 



Shell sinistral, short, ovate-conic, minutely perforate, thin, ob- 

 liquely striate, subangulate at the periphery, chiefly at the beginning 

 of the last whorl. Spire rather shortly conic, apex with a quite 

 small dark brown dot, the first 1J whorls minutely and sparsely 

 punctulate. Whorls 6, the first ones distinctly, the later barely con- 

 vex, last whorl rather ventricose ; 3^ earlier whorls white, lower of 

 a pale lemon color ; the third whorl ornamented with two series of 

 pale brownish and very small spots ; the last whorl with a narrow 

 yellow zone below the suture, circumscribed by an indistinct broad 

 white band, and furnished with two fine brown revolving lines more 

 or less evanescent towards the aperture, the upper one just below tfee 

 periphery, the other around the yellow umbilical area ; the immedi- 

 ate vicinity of the umbilicus flesh-tinted. Aperture strongly oblique ; 

 columella straight, thin, triangularly expanded, white. Lip thin, 

 white, narrowly expanded. 



Length 23 J, diam. 14, length of aperture 11 mill. 



Length 22, diam. 13, length of aperture 11 mill. 



Cochinchina. 



Amphidromus fultoni Axe., Nautilus xi, p. 62 (Oct. 1, 1897). 



" This, as well as the following \_A. eudeli\ are members of the 

 group of A. flavus Pfeiffer, according to Mr. Hugh Fulton, who 

 kindly examined the specimens and declared them to be new species. 

 From the former it differs in being shorter, in having 6 whorls 

 only, a dark-colored apex, two narrow revolving bands on the last 

 whorl and other particulars. Named in honor of Mr. Fulton, who 

 has very thoroughly and carefully monographed this difficult genus." 

 (Ancey). 



The pale biserial dotting of the third whorl, yellow line below the 

 suture of the last, black dot at the apex and two basal bands, show 

 this form to be near var. tryoni of A. xiengensis ; but that shell is 

 more solid, more elongate, with less oblique, longer aperture, etc. 

 Figured from the type specimen kindly lent by Mr. Ancey. 



A. FLAVUS (Pfeiffer). PI. 63, figs. 92, 93. 



Shell sinistral, scarcely perforate, ovate-conic, thin, nearly smooth, 



