DRYM^EUS, MEXICO AND CENTRAL AMERICA. 53 



(Salle and Boucard); San Antonio, near City of Mexico (Heilprin 

 Exped.); Toluca (Hoge); Cuernavaca (Godman); Puebla and Tehu- 

 acan (Uhde); Tenango (Hegewisch). 



? Bulimus (Bulimulus) nitidulus BECK, Index Moll., p. 67 (1838) 

 (without description) Bulimus hegewischi PFR., Symb. Hist. Helic. 

 ii, p. 46 (1842) (excl. var.); Monogr. Helic. Vivent. ii, p. 172. 

 REEVE, Conch. Icon, v, Bulimus, pi. 70, fig. 508 Bulimus (Mesem- 

 brinus') hegewischi ALBERS, Die Helic. ed. i, p. 157 PFR. in Malak. 

 Blatt. ii, p. 158 (1855). Orthalicus (Mesembrinus) hegewischi, H. & 

 A. ADAMS, Gen. Rec. Moll, ii, p. 157 Bulimulus (Mormus) hege- 

 wischi MARTENS in Albers' Die Helic., ed. 2, p. 216; Malak. Blatt. 

 xii, p. 28 (1865). Bulimulus (Scutalus) hegewischi Fiscu. & 

 CROSSE, Miss. Scient. Mex., Mollusca, i, p. 526, pi. 23, fig. 10, 10a, 

 and var. minor, gracilior, f. lOb. Bulimulus hegewischi STREBEL, 



Beitr. Mex. Land- und Siissw.-Conch. v, p. 66, pi. 6, fig. 10 Otos- 



tomus hegewischi MARTENS, Biol. Centr. Amer., p. 211, pi. 13, f. 14. 



Var. c, yellowish, with numerous chestnut streaks. 



Bulimulus (Mormus) hegewischi Var. e, MART, in Malak. Blatt. 

 xii. pp. 28, 29 (1865). Bulimulus hegewischi, No. 2, STREBEL, loc. 

 cit. p. 67. 



E. Mexico : Orizaba (Uhde). 



Var. d, yellowish, with faint diaphanous streaks (fig. 82). 



W. Mexico, Omilteme, in the State of Guerrero at an elevation of 

 8000 feet (H. H. Smith). 



Differs from the foregoing species in the long, oval body-whorl and 

 narrower perforation. Figs. 84 and 85 show this characteristic 

 shape better than the others. The longitudinal stripes vary from 

 many to very few and inconspicuous. Dr. von Martens writes : 

 This species is about intermediate between 0. recluzianus and 0. 

 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. c, 1 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 

 the vars. c and d should not have been found by other collectors, but 

 I am unable to refer them to any other known Mexican species. I 

 have already stated that the locality Pazqqaro (Patzcuaro), state of 

 Michoacan, is given in Pfeiffer's first description only for the var- 

 iety /?, " fasciis latis tesselatis violaceo-fuscis," which is probably my 



