2 DRYM^US, FLORIDA AND WEST INDIES. 



racetis, multifasciatits, virgulatus, exi'lis, tenuissimus, auris-silenij 

 Achatina virginea, etc., which we cannot, without further confirma- 

 tion, consider actual inhabitants of that region. See also pp. 39, 40 

 of volume XI. 



Besides the species described below, the following forms have been 

 attributed by Beck to the Antilles: 



Bulimus (Bulimulus) venustus Beck, Index Moil., p. Go, "I. 

 Antill." 



Bulimus (Bulimuhis) pugio Beck, Index Moll., p. 66, " I. Antill." 



Bulimus (Bulimulus} ochraceus Beck, Index Moll., p. 67, " I. 

 Antill." 



Bulimus (Mastus) niveus Beck, Index Moll., p. 73, " I. Antill." 



Bulimus {Cochlicellus^) subantiquatus Beck, Index Moll., p. 63, 

 "I. Antill." 



All are nude names, unknown to subsequent authors. The Index 

 Molluscorum was, according to a MS. note (apparently by Beck) in 

 my copy, projected to consist of three parts, of which "fasciculus 3 

 nondum publicatus, continet speciarum novarum descriptiones." 



D. DORMANI (W. G. Binney). PI. 5, figs. 14, 15, 16, 17. 



Shell umbilicate, ovate-conic, thin (often fragile), white or cor- 

 neous-white, opaque or somewhat transparent, with (typically) four 

 spiral bands of squarish brown spots, the upper band narrow, often 

 wanting; the spots frequently irregular, oblong, or coalescerit verti- 

 cally or horizontally, or even wholly wanting. Surface smooth, 

 glossy or corroded, with delicate spiral striae when not effaced. Spire 

 decidedly conic; apex obtuse. Whorls 5^ to 6, the last convex. 



Aperture oblique, ovate, showing the external murk ings within ; 

 peristome simple or a trifle expanded, the columellar margin dilated, 

 reflexed. 



Alt. 29, diam. 16, length of aperture 15 mill., often smaller. 



Peninsular Florida: mouth of the St. John's River, and Cedar 

 Keys, south to the Caloosahatchie River. 



Bulimus dormani W. G. B., Proc. Acad. Nat. Sci., Phila., Oct., 

 1857, p. 188; Terrestr. Moll, iv, p. 132, pi. 80, f. 10. PFR.. Malak. 

 Bl., 1859, p. 45; Monogr. vi, p. 109. Bulimulus dormant. W. G. B., 

 Land and Fresh-water Shells N. A., i, p. 194, f. 339 ; Proc. Acad. 

 Nat. Sci., Phila., 1876, p. 190 (anatomy); Terrestr. Moll, v, p. 397, 



