DRYMvEUS, MEXICO AND CENTRAL AMERICA. 83 



dare not assert it positively. Tristram's figure is somewhat magni- 

 fied, as is proved by his statement in the text, that the length of the 

 shell is 18 mill. He gives the breadth as 8 mill.; but this is too nar- 

 row, as by reducing the measurements of his figure we find 9^ mill, 

 as the breadth of the last whorl. Probably he has, judging from the 

 example of Dr. Pfeiffer, measured the breadth just above the upper 

 edge of the aperture, which is in reality the breadth of the penulti- 

 mate whorl. This must be kept in mind when comparing my meas- 

 urements with those given by Dr. Pfeiffer. 



" The Costa Rica specimens have stripes only on the upper whorl- 

 and also here less numerous than in the type." (Martens.) 



D. UHDEANUS (v. Martens). PI. 15, figs. 47-53. 



Shell rimate, oblong-conic, rather thin, perpendicularly .rather 

 coarsely striate, showing very fine spiral lines under a lens, opaque, 

 fleshy-straw-colored, usually ornamented with three white bands. 

 Spire long-conic, rather acute, the apex corneous-yellow. Whorls 6, 

 convex, the last tapering at base. Aperture aval-oblong, colored 

 within like the outside and slightly roseate, columella a little arcuate, 

 rose colored; peristome simple, unexpanded, the columellar margin 

 narrowly reflexed and overhanging. 



Alt. 22, diam. 10, length of aperture 10 mill. (Mart.). 



Mexico, without nearer indication of locality ( Uhde). E. Mexico : 

 Aculcingo, State of Vera Cruz, south of Orizaba (Boucard). W. 

 Mexico: Sayula,, State of Jalisco (Ho'ge). 



Bulimulus (Mesembrinus) uhdeanus VON MART., in Monatsber. 

 Akad. Wiss. Berl., 1863, p. 541 ; Malak. Blatt. xii, p. 25, pi. 1, figs. 



4, 5 (1865). PFR., Monogr. Helic. Vivent. vi, p. 114 Bulimulus 



(Scutalus) uhdeanus FISCH. & CROSSE, Miss. Scient. Mex., Mollusca, 

 i, p. 530, pi. 21, figs. 4, 4a. Bulimulus uhdeanus STREBEL, Beitr. 



Mex. Land- und Siissw.-Conch. v, p. 90, pi. 11, figs, lla, b Otos- 



tomus uhdeanus MARTENS, Biologia, p. 233, pi. 15, f. 16 (with vars. 

 cuernavacensis, tepecensis and borealis (Sept., 1893.) 



" The first one and a half whorls are unicolorous, yellow, and finely 

 reticulated. The typical form may be described as white with fawn- 

 colored bands, or fawn-colored with white bands ; the latter defini- 

 tion is perhaps the best, as the fawn occupies a greater part of the 

 surface, and is the only color present in subvar. c, and I have used it 

 in my earlier descriptions. But if we examine the var. cuernavace n ~ 



