AMPHIDROMUS. 179 



mate subincrassafco, breviter reflexo, albo, marginibus callo nigro- 

 castaneo junctis. 



" Long. 47, diam. 20 mill." (Pfeiffer.) 



Hob. Burma : Tavoy, Mergui (Theobald). 



Pfeiffer, when describing the species, gave the habitat " New 

 Hebrides "from information supplied by Cuming, whose " habitats" 

 have on so many occasions proved erroneous or unreliable. 

 Gassies attributed the species to New Caledonia, also on the 

 strength of a specimen, so-labelled, received by him from Cuming ! 

 Both these localities may be ignored and Burma taken to be the 

 true habitat, the species having been collected at Mergui by 

 Theobald, as recorded by Nevill in his ' Hand List of Mollusca in 

 the Indian Museum.' The shell, moreover, figured in Conch. Ind. 

 as atricallosus, from Tavoy, has been referred correctly I think 

 to the present species by Pilsbry, who considers that it " stands 

 quite alone for an Amphidromus, having no close companions." 



152. Amphidromus atricallosus, Gould. 



Bulimus atricallosus, Gould, Proc. Boston Soc. Nat. Hist, i, 1844, 

 p. 140 ; ibid., Boston Journ. Nat. Hist, iv, 1844, p. 457, pi. 24, 

 fig. 3 ; Deshayes in Fe"russac, Hist. Nat. Moll, ii, part 2, 1851, 

 p. 51, pi. 130, figs. 9, 10. 



Bulimus perversus, var. 8, Pfeiffer, Mon. Helic. Viv. iii, 1853, p. 308 j 

 ibid., Conch.-Cab., Bulimus, 1854, p. vi, pi. 40, figs. 10, 11. 



Bulimus (Amphidromus) atricallosus, von Martens, Preuss. Exp. Ost- 

 Asien, Zool. Theil, ii, 1867, p. 77 ; ibid., Conch. Mitth. ii, 1883, 

 pp. 130, 131 ; ibid., Journ. Linn. Soc. London, xxi, 1887, p. 163. 



Amphidromus atricallosus, Semper, Reisen Arch. Philipp. 2te Theil, 

 iii, 1877, p. 147, pi. 16, f. 20 (teeth) ; Nevill, Hand List, i, 1878, 

 p. 126 ; Pilsbry, Man. Conch, eer. 2, xiii, 1900, p. 165, pi. 58, 

 figs. 19-21. 



Amphidromus perversus, var. atricallosa, Fulton, A. M. N. H. ser. 6, 

 xvii, 1896, p. 69. 



Bulimus eques, Pfeiffer, Malak. BLatt. iv, 1857, p. 158. 



Original description : "Testa solida, imperforata, oblongo-ovata, 

 vix striata, sulphurea ; anfr. 7 convexiusculis, ad suturam con- 

 strictis ; apertura lunato-ovali, basi sub-effusa, labro albo, reflexo, 

 marginibus callo atro junctis. 



" Long. 2$, lat. 1 poll." 



" Shell imperf orate, elongated ovate, solid, smooth, and shining, 

 of a sulphur-yellow colour; whorls seven, moderately convex, 

 somewhat girt in near the suture ; last whorl nearly two-thirds 

 the length of the shell ; aperture ovate-lunate, somewhat angular 

 at base, and slightly effuse; lips white, widely revolute, not 

 flattened ; columella white, the callus uniting the extremities of 

 the peristome, and, as far within the shell as can be seen, pitchy- 

 black ; from the midst of it, extending across the penult, whorl, is 

 a line of the same color, showing the termination of a former 

 .stage of growth. 



" Length 2^ [ = 59 mm.] ; breadth 1 inch [=25 mm.]." (Gould.) 



