DRYM^EUS, 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. 12J, length of aperture 12J mill. 



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

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

 State of Michoacan (Hegewisch). 



? Bulimus hegeivischi var. ft 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). FISCH. & CROSSE, Miss. Scient. 

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

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

 Land- und 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. attenuatus, with shorter aperture 

 and smaller triangular columellar reflection. 



Var. subunicolor Martens (pi. 2, iig. 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. ft, 

 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 strire are somewhat more wrinkled and prominent, the spiral 

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



