192 



LAND AND FRESH-WATER SHELLS OF N. A. [PAUT L 



Fig. 334. 



SuBGEXus DRYM^US, Albers. 



Shell perforate or rimate, conic-elongated, thin, diaphanous, 

 striatulate, variegated ; whirls 6-8, rather convex ; aperture 

 ample, oblong-oval, equalling about half the shell's length, colu- 

 mella more or less tortuous, peristome thin, expanded, generally 

 colored, its coluraellar margin reflected. 



Btiliniultis serperastriis, Say. — Shell elongate, ovate, even 

 fusiform, thin, with delicate lines of increment, yellowish-white, with 

 about six unequal, interrupted, sometimes coalescent, bluish- 

 black bands on the large whirl, three of wliich are continued 

 on the upper whirls ; whirls six or seven, slightly convex, 

 with a fine, well-marked suture ; aperture less than half the 

 length of the shell, lunate, one-half longer than wide, rather 

 acute at base ; peristome sharp, expanded, its columellar 

 portion widening upwards, and protecting a moderate-sized 

 umbilical opening ; columellar margin straight ; the bauds 

 of the exterior reappear, in still deeper colors, in the fauces, 

 but terminate at some distance short of the peristome, which 

 is white, or tinted more or less rose-color. Length 31, diam- 

 13; aperture 15 long, 8 mill. wide. 



Bulimus serperastriis, Sat, New Harmony Diss. Dec. 30, 

 1830 ; Binney's ed. 39.— Pfeiffek, Mou. Hel. Viv. 

 II, 102; III, 341 ; in Chemnitz, ed. 2, 82, pi. xxx, f. 122; pi. xxxix, 

 f. 5 (1854).— Philippi, Icon. Ill, 23, p. 43, tab. ix, f. 6 (1850).— 

 Reeve, Con. Icon. no. 252.— Binney, Terr. Moll. II, 274, pl. 1, f. 2.— 

 W. G. BiNNEY, Terr. Moll. IV, 126. 

 Bulimus liebmanni, Pfeiffek, Mon. Hel. Viv. II, 106. 



Bulimus ziehmanni, Reeve, Con. Icon. 506. 

 Fig. 335. Bulimus nitelinus, Reeve, Con. Icon. 398. 



Drymieus serperastrus, Tryon, Am. Journ. Conch. Ill, 

 167, pl. xiii, f. 14 (1867). 



Inhabits Central America and Mexico. Has 

 been found in Texas. 



This species belongs more to the fauna of 

 Mexico than to that of the United States, but 

 is admitted here because it has actually been 

 found in Texas. 



More slender and elongated individuals have 



been described under the names of B. liehmanni 



^"!rwr IsiiT* and ziehmanni. The former name is withdrawn 



