102 Mr. Hugh Fulton on new Species of 



Ponsonby, and H. sultana^ Morelet. Knowing of no sub- 

 genus to which I can relegate this species, I propose to 

 institute for it the genus or subgenus Xenothauma ; the apical 

 character of X. Baroni separates it from all other South- 

 American Helicida3. In Pilsbry's excellent arrangement in 

 Tryon's ' Manual of Conchology ' Xenothauma would probably 

 rank as a genus ; its systematic position may perhaps prove to 

 be near Epiphragmophora of Doering. 



AmpMdromus sumhaensis^ sp. n. 



Shell sinistral, oblong-conic, narrowly perforate, solid ; 

 whorls 6^, convex, first two of a pale purple colour, 

 lower whorls cream to pale yellow below, ornamented with 

 oblique bluish-grey stripes, which are crossed at upper 

 whorls by interrupted spiral lines of a darker colour ; apex 

 dark brown ; lip slightly expanded and reflected, pale purple ; 

 columella thick, purple, connected with the lip by a thin red 

 callus. 



Long. 34 millim., maj. diam. 16 millim. 



Type in British Museum. 



Lac. Sumba (Soemba) Island. 



Allied to latistrigatusj Schepmann, but easily separated by 

 its narrower form, the dark coloration of apical whorls, and 

 its less solidity. 



AmpMdromus halaoensis^ sp. n. 



Shell sinistral, polished, oblong-conic, almost imperforate ; 

 whorls 6, convex, obliquely striate, first two white, with dark 

 brown apex, lower whorls yellow, with two spiral bands of 

 equidistant square and oblong dark brown spots, one situated 

 below and the other just above the suture; in addition the 

 last whorl has a similar but wider band just below the peri- 

 phery, and a continuous band above the dark brown umbilical 

 area; lip and columella white, the former slightly expanded, 

 the latter thickened at point of insertion but not reflected, both 

 connected by a thin transparent reddish callus, which invests 

 the parietal wall. 



Long. '6'i millim., maj. diam. 16 millim. 



Type in British Museum. 



hoc. Kalao Island {Everett). 



This species is nearest to the Celebes form I described as 

 A. contrariusy var. maculata*, which 1 now think is distinct 

 from contrartus and might be conveniently classed as a species. 



• Ann. & Mag. Nat. Hist. ser. 6, vol. xvii. 1896, p. 78, pi. tu. fig. 4. 



