OTOSTOMUS. 211 
4—4°3 centim. long ; back coarsely longitudinally wrinkled, loamy yellow; sides with 
finer and more superficial and irregular wrinkles, pale brownish-grey. Upper feelers 
9-10 millim. long, slender, yellowish-grey at the base, blackish-grey on their anterior 
part; eyes black. Lower feelers 24-4 millim. long, swollen at the base, pale grey. 
Face higher than broad, ochraceous-greyish. Hinder part of the foot with a distinct 
longitudinal median ridge, rounded at the extremity.” 
15. Otostomus hegewischi. (Tab. XIII. fig. 14, var.) 
? Bulimus (Bulimulus) nitidulus, Beck, Index Moll. p. 67 (1838) (without description) *. 
Bulimus hegewischi, Pir. Symb. Hist. Helic. ii. p. 46 (1842) (excl. var.)?; Monogr. Helic. Vivent. 
li. p. 172°; Reeve, Conch. Icon. v., Bulimus, t. 70. fig. 508‘. 
Bulimus (Mesembrinus) hegewischi, Albers, Die Helic. ed. 1, p. 157°; Pfr. in Malak. Blatt. u. p. 158 
(1855) °. 
Orthalicus (Mesembrinus) hegewischi, H. & A. Adams, Gen. Moll. ii. p. 1577. 
Bulimulus (Mormus) hegewischi, v. Mart. in Albers’s Die Helic. ed. 2, p. 216°; Malak. Blatt. xii. 
p- 28 (1865) °. 
Bulimulus (Scutalus) hegewischi, Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 526, t. 23. 
figg. 10, 10a”. 
Bulimulus hegewischi, Strebel, Beitr. Mex. Land- und Siissw.-Conch. v. p. 66, t. 6. fig. 10”. 
Hab. Centra Mexico: environs of Mexico, in “tierra fria,” on Cactus (Sallé and 
Boucard ©); Toluca (Hoge); Cuernavaca (Godman); Puebla and Tehuacan 
(Uhde® 1); Tenango (Hegewisch *). 
6: minor, gracilior. 
Bulimulus (Scutalus) hegewischi, var. y, Fisch. & Crosse, loc. cit. p. 526, t. 28. fig. 10 6”. 
Hab. Mexico: exact locality not indicated. 
c: flavescens, strigis castaneis frequentioribus. 
Bulimulus (Mormus) hegewischi, var. e, v. Mart. in Malak. Blatt. xii. pp. 28, 29 (1865) ™. 
Bulimulus hegewischi, no. 2, Strebel, loc. cit. p. 67 ™. 
Hab. E. Mexico: Orizaba (Uhde }° 14). 
d: flavescens, strigis evanidis diaphanis. (Fig. 14.) 
Hab. W. Mexico: Omilteme, in the State of Guerrero, at an elevation of 8000 feet 
(H. H. Smith). 
This species is about intermediate between 0. recluzianus and O. ghiesbreghti, Pfr. ; 
it is rougher than the former and not so coarsely wrinkled as the latter; the stripes 
are ordinarily not abrupt below, and the columellar margin is white. Of the var. ¢, I 
know of only two young specimens ; their stripes break up at the same height, but 
perhaps in the adult shell this may be otherwise. It is strange that Oe cand d 
