ACAYUS. 47 



Helix (Acavus) h&mastoma, var. melanotragus, Nevill, J. A. S. B. 



1, 1881, p. 133. 

 Helix (Macroon (Acavus)) htemastoma, var. melanotragus, Pilsbry, 



Man. Conch, ser. 2, vi, 1890, p. 79, pi. 18, fig. 24. 

 Acavus hfsmastomus, var. melanotrayus, Pilsbry, Man. Conch, ser. 2, 



ix, 1894, p. 154. 



" Peristome and a broad band across the parietal wall black ; 

 a white spot at the insertion of the columella. 



" This variety is nearly as abundant as the typical red-lipped 

 form." (Pilsbry.) 



The colouring of the bands is darker than usually obtains in 

 the typical form, being a blackish brown. 



ffab. Ceylon (NeviU, Blanford) : Kandy (Simon). 



Var. conus, Pilsbry. 



Helix (Macroon (Acavus)) hcemastomus, var. conus, Pilsbry, Man. 



Conch, ser. 2, vi, 1890, p. 79, pi. 16, fig. 7. 

 Acavus hcemastomus, var. conus, Pilsbry, Man. Conch, ser. 2, ix, 



1894, p. 154. 



Original description : " More elevated than the type, with 

 which it agrees in the colour of the outside. The entire peri- 

 storne, columella, and a broad band across the parietal wall are a 

 beautiful lilac or purple colour ; a rather deep excavation at the 

 place of the umbilicus. 



" Diarn. 35, alt. 36 mill." (Pilsbry.) 



Yar. concolor, Pilsbry. 



Helix h&maxtoma, var. concolor, Pilsbry, Nautilus, iv, 1890, p. 59. 

 Acavus hcemastoma, var. concolor, Pilsbry, Man. Conch, ser. 2, vi, 

 1890, p. 303. 



Original description : " Unicoloured chestnut all over, the two 

 earlier whorls and a narrow umbilical crescent pink ; lip and 

 parietal wall red. No spiral white zones or bands. Form 

 normal." (Pilsbry.) 



61. Acavus fastosus, Albers. 



Helix fastosa, Albers, Malak. Blatt. i, 1854, p. 213 ; Pfeiffer, Novit, 



Conch, ser. 1, i, 1855, p. 40, pi. 11, figs. 1, 2 ; Pfeiffer, Mon. Helic. 



Viv. iv, 1859, p. 197 ; Hanley & Theobald, Conch. Ind. 1875, 



pi. 127, fig. 5. 

 Helix melanotragus, Fe"russac, Hist. Nat. Moll. 1821, pi. 32 B, 



tigs. 2, 3, 4 (non Born). 



Helix (Acavux) fastosa, Pfeiffer, Malak. Blatt. ii, 1856, p. 144. 

 Helix (Afiavus) fastuosa, Martens, Die Heliceen, ed. 2, 1860, p. 172. 

 Helix (Macroon (Acavus)) faslosa, Pilsbry, Man. Conch, ser. 2, vi, 



1890, p. 79, pi. 16, figs. 5/6. 

 Acavus fa$tosus, Pilsbry, Man. Conch, ser. 2, ix, 1894, p. 154. 



Original description : " T. imperforata, globoso-conica, regu- 

 lariter confertim striata, albida, oblique fulvo-strigata et multi- 



