Species of Amphidvomusy Aiders. H'6 



broad spiral band of short, oblique, equidistant dark brown 

 stripes at the periphery, continued above at the suture j lip, 

 columella, and umbilical area pink. 



A. Adamsi, var. rufocmcta, Fulton. (PI. V. fig. 1.) 



Loc. Borneo. 



Ground-colour fawn or light brown, with three pink spiral 

 bands — one immediately below the suture, and the other two 

 above and below the periphery, the upper one being con- 

 tinued above. 



A. Adamsi, var. superba, Fulton. (PI. V. fig. 10.) 



Log. Banguey Island. 



A most beautiful variety of a bluish-grey ground-colour, 

 ornamented with three spiral colour-bands — a pink one just 

 below the suture, one either yellow or pink at the centre of 

 the whorls, and the third (a yellow one) at the lower part of 

 last whorl ; on the upper whorls are oblique stripes, which 

 are interrupted by the spiral bands ; lip, columella, and 

 umbilical area pink. 



A. Adamsi, var. simplex, Fulton. (PL V. fig. 12.) 



Loc. Banguey Island. 



Ground-colour lemon, which is sometimes suff"used with 

 orange ; a pink spiral band below the suture ; upper whorls 

 either plain or with some brown spots above the suture of 

 third and fourth whorls. 



Long. 26 millim., maj. diam. 15. 



A. Adamsi, var. inornata, Fulton. (PI. V. fig. 6.) 



Loc. N. Borneo. 



Thin, pale lemon-colour, first three whorls semitrans- 

 parent, and with some oblique and more or less indistinct 

 brown stripes, suhangulate at the periphery ; suture slightly 

 channelled ; lip and columella white ; umbilical area some- 

 times tinged with pink. 



A. Adamsi, var. aureocincta, Fulton. (PI. V. figs. 3, 3 a.) 



Loc. N. Borneo. 



Upper whorls dirty white, lower of a yellowish fawn- 

 colour; a narrow golden-yellow hand just below and encircling 

 the suture ; lip and columella white. 



This variety varies greatly in size and form, as the fol- 

 lowing dimensions will show : — 



6* 



