DRYM^US-ZAPLAGIUS. 



striation. Spire conic, the apex black tipped ; whorls about 5, but 

 slightly convex, the last angular at the base, slightly convex above 

 (sometimes decidedly so), ascending in front. 



Aperture nearly vertical, subtrigonal, banded and maculated 

 within ; peristome expanded throughout, white, the upper margin 

 inserted on the body whorl, below the lowest suture; basal margin 

 obliquely slanting. 



Alt. 24, diam. 27 mill. 



Alt. 22, diam. 26 mill. 



Alt. 30, diam. 32 mill. Brazil. 



Bulimus lateralis MENKE, Syn. Meth. Moll. Mus. Menkeano, p. 76 

 (1828); edit. 2, p. 128. PFR., Monogr., iii, p. 376 ; iv, p. 446; 

 Conchyl. Cab., p. x, pi. 49, f. 21-23 (variety). Bulimus navicula 

 PFR., Monogr., ii, p. 99 (in part). B. navicula var. RVE., Conch. 

 Icon., pi. 41, f. 258a. Bulimus lyonetianus KUSTER, Conchyl. Cab. 

 p. 23, pi. 5, f. 5-7 (excluding all synonymy). Helix auris leporis 

 a, FER., Prodr., p. 57, no. 438. Otostomus lateralis BECK, Index, 

 p. 55. 



Very readily distinguished from navicula by the lower insertion 

 of the outer lip, more erect spire, and different coloration. It is- 

 allied to aurisleporis in these repects. 



In a form of this species figured by Pfeiffer, the whorls, especially 

 the last, are decidedly swollen above and the aperture consequently 

 modified in form (figs. 31, 32, 33). In typical lateralis they are but 

 slightly convex. Specimens before me connect the extremes of con- 

 tour, so that I hardly think the inflated form a true variety, though 

 it may be such. 



D. AURISLEPORIS (Bruguiere). PI. 28, figs. 1. 2, 3, 4. 



Shell pyramidal, perforate and rimate, with an obtuse basal keel 

 and obliquely flattened base ; rather thin. Coloration variable, 

 either (1) white or whitish, with a dark band above the basal keel, 

 variously maculated or streaked above, banded or maculated below,, 

 or (2) whitish with peripheral band, elsewhere clouded indistinctly 

 with brown, or (3) reddish-brown throughout ; some specimens par- 

 taking of two of these patterns. Surface lusterless, lightly rough- 

 ened or malleated in a pattern of more or less distinct small lozenge 

 shaped grains. Whorls about 5*, slightly convex, the last a little 

 ascending in front, its latter half obtusely angular below, excavated 

 behind the columellar lip. 



