DRYMJ3US, MEXICO AND CENTRAL AMERICA. 59 



Surface glossy or dull, with inconspicuous wrinkles of growth, on the 

 base decussated or scratched by impressed spiral lines. Spire conic, 

 subacute, black-tipped in banded specimens. Whorls fully 6, mod- 

 erately convex, the last ventricose. Aperture oblong-ovate, inside 

 white with vivid chestnut spots ; outer lip acute, white-edged, not 

 expanded ; columellar lip shortly reflexed above. 



Alt. 26^, diam. 14, length of aperture 14 mill. 



Alt. 241, diam. 12^, length of aperture 12^ mill. 



Central Mexico : elevated plain of Mexico (Uhde); Matamoras Izu- 

 car, State of Puebla (Boucard); Puebla (Berkenbusch); Patzcuaro, 

 State of Michoacan (Hegewisch). 



? Bulimus hegewischi var. P PFR. Symb. Hist. Helic. ii, p. 46 ; 

 Monogr. Helic. Vivent. ii, p. 173 Bulimulus (Scutalus) fenestrellus 

 MART, in Monatsber. Akad. Wiss. Berl., 1863, p. 541 ; Malak. 

 Blatt. xii, p. 35 (1865) (part). FISCI-I. & CROSSE, Miss. Scient. 

 Mex., Mollusca, i, p. 529. Bulimus fenestrellus PFR. Monogr. Helic. 

 Vivent. vi, p. 144. Bulimulus fenestrellus STREBEL, Beitr. Mex. 

 Land- nnd Siissw-Conch. v, p. 64, pi. 5, fig. lOb ; pi. 13, fig. 5 

 (radula) ; pi. 14, fig. 6 A, B (anatomy). Bulimus gealei^ H. 



ADAMS, P. Z. S. 1867, p. 309, pi. 19, fig. 21 PFR. Monogr. Helic. 



Vivent. vi, p. 110. Bulimulus (Scutalus) gealei, FISCH. & CROSSE, 



loc. cit. p. 536, pi. 21, figs. 3, 3 a, b Otostomus fenestrellus 



MARTENS, Biol. Centr. Amer., p. 214. 



More inflated than any form of D. attenuates, with shorter aperture 

 and smaller triangular columellar reflection. 



Var. subunicolor Martens (pi. 2, 5g. 5). White, with light 

 chestnut bands showing only in the throat. 



Bulimulus (Mormus) hegewischi^ varr. c, d, MARTENS in Malak. 

 Blatt. xii, pp. 28, 29 (1865) Bulimulus (Scutalus) gealei var. /?, 



FISCH. & CROSSE, loc. cit. p. 536, pi. 21, figs. 3c, 3d Bulimulus 



fenestrellus var., STREBEL, loc. cit. p. 65, pi. 5, fig. lOa. Otostomus 

 fenestrellus v. MARTENS Conch. Mittheil. ii, p. 193 ; var. subuni- 

 color v. MARTENS, Biol., p. 215. 



Dr. von Martens writes : The variety seems to be found in com- 

 pany with the banded specimens. In the disposition of the bands 

 this species bears some resemblance to Otostomus serperastrum and 

 even to 0. emeus; but the sculpture is distinctly more coarse, the 

 vertical striae are somewhat more wrinkled and prominent, the spiral 

 striae are not so fine and crowded, but rather irregular and broad, 



