66 I'KYM.KTS, MKXICO AND CENTRAL AMERICA. 



by the tninsvcT.se coalescence of blotches on longitudinal streaks, but 

 varying considerably in development of bands or streaks; spire conic, 

 rather acute. "NVlmrls ('.. slightly convex, the last slightly longer than 

 the spin-. 



Aperture oblique, ovate; peristome thin, a trifie expanded, the eol- 

 umellar margin dilated above, abruptly reflexed; columella narrow. 



Alt. 21. diam. 10i, length of aperture 13 mill. 



E. M<:rico : Paclio, Molino de Pedreguera, Coatepec, CkirimoyO) 

 all near Jalapa. and Barranca de Mahuistfan, and San Jose Miahu- 

 iillan (Streliel); Jatapa (Iliige); Miradur ( Uerendt); Orizaba (Bot- 

 teri, Salle); Cordova (type locality, Salle, Huge); Plantation Toxpa 

 (Toapan), near Cordova (Berendl), Atoyac (Hoge). 



Biilinm* <1n;i,>t; Pri:.. P. '/.. S., 1856, p. 319, pi. 3. r >, f. 12; Monogr. 

 Helic. Yivent. iv, p. 390. ./>//////////// (Sen talus) droneti FISCH. & 

 CROSSE, Miss. Scient. Mex., Mollusca, i. p. .533, pi. 23, figs. 9, 9a, 



b UnliiittilHs droiicfl STREUKL, Beitr. Mex. Land- und Siissw.- 



Conch. iv. pi. fi, fig. 13; v, p. 77, pi. 6, fig. G. (young); pi. 12, figs. 



7a, b, c hiilintiiK sporlederi Pi i;.. Malak. Blatt. xiii, p. 83 (1806); 



Monogr. Helic. Vivent. vi. p. 112. Bulirmthis (Sciitahts) sporlederi 

 FISCH & CROSSE, Miss. Scient. Mex., Mollusca, i. |). . r )3"), ]>1. 21, 

 figs. 5, 5a Jiii/fiHH/Hs sporlederi STREBEL, Beitr. Mex. Land- und 

 Siissw.-Conch. iv, pi. i 1 ., fig. 12 ; v. p. 78, pi. 12, fig. 9 ; pi. 13, fig. 10 

 (radula); pi. 14, fig. 18A, B, C (anatomy) Otostomus (Scutahts) 

 spurlt'dcri \. MAKT.. Conch. Mittheil. ii. p. 193 Otostomus droueti 

 v. MAKT., Biologia. p. 218. 



The coloration described above is that of I'l'eitl'er's type, the spe- 

 cimen used being from Miradur. which is also the type locality of 

 sporh'di'rl. Dr. von Martens enumerates the following color-forms. 



a: (Typical form, pi. 3, figs. 36, 37, 38, 43). Streaks and spiral 

 band- in n.mhinatiim. ( Pfr. P. /. S., is;,! 1 ,, pi. 35, fig. 12: Fi.M-h. 

 iV Cn.sse, loc. cit. pi. '_':;, lig.-. 9, 9a; Strebel, loc. cit. iv. jd. <',, lig. 13; 

 v, pi. 12, lig. 7t.) 



b: Streaks i-ather numerous and wavy. (Strebel, loc. cit. iv, pi. 

 0, lig. 12; v. pi. 12, ligs. 7r/, 7c.) 



c: ( Var. ajiiir/'-itrri. pi. 3, figs. 40, 41, 42). Streaks fewer, 

 straight, ohliipi-- ( l-'i-^clier ^ Cm-se, loc. cit. pi. 23, tig. '.!/;, droiieti, 

 var. . . i 



" The vars, <i and /> have been procured together at Cordova by 

 Ilerr Ho'ge, the var. l> only at Atoyac by the same collector. The 



