OTOSTOMUS. 229 
Bulimus (Mesembrinus) livescens, Albers, Die Helic. ed. 1, p. 157°; Pfr. in Malak. Blatt. ii. p. 158 
(1855) °. 
Orthalicus (Mesembrinus) livescens, H. & A. Adams, Gen. Moll. ii. p. 1577. 
Bulimulus (Mesembrinus) livescens, v. Mart. in Albers’s Die Helic. ed. 2, p.214°; Malak. Blatt. xu. 
Pp. 27 (1865) °; Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 543". 
Bulimulus livescens, Strebel, Beitr. Mex. Land- und Siissw.-Conch. vy. p. 91, t. 6. fig. 4. 
a: fasciis et strigis fuscis distinctis, 
6: fasciis et strigis interstitialibus pallidioribus. 
(var. 8, Pfr. Symb. Hist. Helic. ii. p. 48, and Monogr. Helic. Vivent. ii. p. 175; Strebel, loc. cit. t. 6. 
fig. 4; v. Mart. in Malak. Blitt. xii. p. 27.) 
c: fasciis tribus, strigis nullis. 
(Reeve, loc. cit. t. 47. fig. 304.) 
d: fascia supera 1 angusta, infera 1 paullo latiore et serie macularum intermedia. (Fig. 8.) 
e: fasciis 2 inferis. 
(Philippi, loc. cit. t. 9. fig. 3.) 
f: subunicolor, albidus, strigis nonnullis. 
(typ., Pfr. Symb. Hist. Helic. ii. p. 48, and Monogr. Helic. Vivent. ii. p. 175; v. Mart. in Malak. Blatt. 
xii. p. 27.) 
Hab. Cuntran Mexico: Tehuacan (Hegewisch 1+, Uhde 11); Tecomavaca, in the 
State of Puebla, S.E. of Tehuacan, Cactus- and Mimosa-region (Hoge). 
W. Mexico: Chilpancingo, in the State of Guerrero (H. H. Smith). 
In var. 6 the two upper bands are visible also on the preceding whorls, the two lower 
ones only on the last whorl—these are broader than the others, and the fourth band 
is near the umbilicus, but does not touch it; most of the vertical stripes are between 
the first and second bands; others are immediately below the suture, but these are 
ordinarily paler and short.: In var. d the second band is represented by a row of 
small pale brown spots, and the fourth band is often very faint, the two others being 
very dark. 
The vars. a and f' have been found in company at ‘ehuacan by Herr Uhde, and at 
Tecomavaca by Herr Hoge. The vars. c and é¢ were collected also in company by Herr 
Hage, but he has not indicated their exact locality. 
Dr. Pfeiffer has regarded the banded specimens as variety 3; but as their painting is 
very characteristic I prefer to place them, as form a, first. The apex in some specimens 
is blackish-brown, in others only pale brown or even yellowish. 
Dr. Mérch, in Malak. Blatt. vi. p. 112, enumerates this species with some doubt 
among those collected by CErsted in Nicaragua or Costa Rica, having only two young 
specimens for examination. As this occurrence has not been corroborated by later 
collectors, I think it unsafe to admit it among the ascertained localities. 
Jaw and radula examined by myself. 
