182 HELICID^. 



Original description : — " T. parva, plerumque sinistra, vix per- 

 forata, ovato-conica, elevata, polita, citrina ; anfr. 6 convexis, 

 ultimo ventricoso ; sutura beue impressa ; apertura subcircularis ; 

 peristoinate albo, reflexo, ad columellam dilatato, extremitatibus 

 approximatis." 



" Axis I [ = 22-5 mm.], diam. ^ poll. [=12-5 mm.]." (Gould.) 



Hab. Mergui Archipelago {Benjamin). 



" A pretty shell, grouping ■with Icevus, adamsi, and monilifera^ 

 but smaller, proportionally shorter and more ventricose, and 

 diflFering entirely in colouring, texture, and the broadly rounded 

 form of the aperture.'*' 



Mr. Fulton considers lepidus and syVieticus identical. Ha 

 states * that the types of both are in the British Museum. A shell, 

 labelled lepidus, is certainly marked "type" in the same hand- 

 writing, but the word "type" thei'e is undoubtedly meant in the 

 sense of "typical form,'' as the type on Mhich Gould based his 

 description is in the Albany Museum. The same label bears the 

 name sylheticus in Pfeiffer's handwriting. 



Prof. Pilsbry is of opinion that as sylheticus is a species of the 

 hills, and lepidus inhabits a region rather different faunally, the 

 latter should be allowed to stand pending further comparisons of a 

 good series of the Mergui form vA-ith Eeeve's species. A. lepidus has 

 a more pyramidal shape. Hanley and Theobald while admitting 

 that the two forms approximate observe that Gould's shell is- 

 shorter, with more rounded whorls, and lacks the notch at the 

 commencement of the pillar-lip. 



157. Amphidromus sinensis, Benson. 



Bidimns sinensis, Benson, A. M. N. II. ser. 2, vii, 1851, p. 264; 



Pfeifler, Coucb.-Cab., BiUivms, 1853, p. 67, pi. 20, figs. 1, 2; 



Blanford, J. A. S. B. xxxiv, 1865, p. 94. 

 Bulimus {Amphidroimis) sinensis, Pleit!er, Malak. Blfitt. ii, 1856, 



p. 147 ; vou Martens, Die Heliceen, ed. 2, 1860, p. 185. 

 Ainjyhidroimis sinensis, Nevill, Hand List, i, 1878, p. 126 ; Fulton, 



A. M. N. H. ser. 6, xvii, 1896, p. 80 ; Pilsbry, Man. Conch, ser. 2, 



xiii, 1900, p. 190, pi. 62, figs. 64, 65. 



Original descrijition : — "Testa perforata sinistrorsa, ovata-conica, 

 glabra, lutescente, subtus purpureo-castaueo bifasciata ; spira 

 conica, apice obtusiusculo ; anfractibus 5| convexiusculis, ultimo 

 spiram sequante, fasciis submediani basalique intra apei'turam pro- 

 ductis ; columella subtorta ; apertura obliqua, oblique ovata, peri- 

 stomate planato-reflexo, livide purpureo, postice livide fusco, 

 marginibus callo albido vix junctis, columellari albido breviter 

 superne dilatato. 



" Long. 30, lat. 18 mill. ; long, apert. 16, lat. 12 mill." (Benson.) 

 Hab. Burma: Vegu (2 heobald,iSicliczJia),'Prome, Tongoop, Akyab 

 (Blanford); India : Khasi Hills (Nevill). S. China (Cantor). 



* A. M. N. H. ser. 6, xvii, 1896, p. 80. 



