214 AMPHIDROMUS, GROUP XVII. 



solid, very lightly striatulate, glossy. Pale yellow, painted with 

 rather wide green stripes, sometimes interrupted, and brown above, 

 and encircled by three rose colored bands, one at the suture, another 

 below the periphery, and a third at the umbilical region ; with gen- 

 erally other green, rarely brown bands. Spire turreted-conic, the 

 apex rounded, black. Whorls 7, rather flat, slowly increasing, sepa- 

 rated by an appressed, white-margined suture ; the last whorl a little 

 ascending in front. Aperture slightly oblique, narrow, somewhat 

 auriform ; peristorne but little expanded, white-lipped within, the 

 margins joined by a thin, pellucid callus. Columella strongly spirally 

 twisted, revolute at the perforation. (M lldff.) 



Length 32, diam. 14, longest axis of aperture 14 mill. (Mlldjf.) 



Tenimber Is. (W. Micholitz.) 



A. columellaris MLLDFF., Nachrbl. d. Malak. Ges., 1892, p. 99, 

 pi. 1, f. 9 FULTON, Ann. Mag. N. H. (6). xvii, p. 79. 



The particular island whence the types came is not recorded. Dr. 

 von Moellendorif found the specimens, about 24 in number, to vary 

 but little in form or coloration. The three roseate bands were 

 present on all of them. The convexly twisted columella is a remark- 

 able character. 



Fulton writes that he has " some light colored specimens without 

 the narrow red band at suture, under the manuscript varietal name 

 of gloriosa Bttg." Other specimens have red bands at suture and 

 columella, bwt none at the periphery, the base with two bluish-green 

 zones separated by a yellow band ; the stripes above bluish-green or 

 black-brown, bisected midway by a narrow light band, the first whorl 

 black, the next brown. Lip and columella are white, the latter with 

 only slightly convex edge (fig. 33). This may be called var. sierah- 

 ensis. It is from Sierah Island. 



17. Group of A. Icevis. 

 A. VEVIS (Miiller). PI. 66, figs. 49-54. 



Shell sinistral, umbilicate, ovate-turreted, rather solid, nearly 

 smooth, glossy. Yellow, varying from lemon to tawny (or rarely 

 almost white), frequently fading to white on the spire, encircled by 

 two orange bands, sometimes very faint, and occasionally with a 

 third, subsutural band. In addition to these, three or four purple or 

 red-brown or greenish bands are often developed between the orange 

 ones, and there may be a red line below the suture and a fleshy- 



