b STROPHOCHEILUS. 



Spix, digessit, descripsit, etc., Dr. J. A. Wagner, p. 12, pi. 11, (1827) ; 

 species S. hcemastomus Spix (==B. ovatus Miiller), and S. almeida, 

 Spix (=~B. pudicus Miiller). Strophochilus ALBERS-MARTENS, Die 

 Hel. 1860, p. 191, type B. almeida Spix. Coniclus ALBERS, Die 

 Hel. 1850, p. 147. 



Shell ovate-oblong, subperforate and solid, brown, or white and 

 rose under a yellow cuticle. Surface smoothish to the eye or finely 

 malleated, the lens showing close minute spiral striae, throughout (ex- 

 cept in S. pudicus'). Nepionic shell large. 



Aperture long-ovate, the lip brown or rose colored, well rejtexed 

 and recurved, often with a tooth within, colurnella reflexed, the fold 

 inconspicuous, not thickened. Type S. pudicus Mull. 



This group contains a number of Brazilian species of moderate 

 size, allied to Borus in the large nepionic shell. Strop hoc heilus 

 differs from Plekocheilus, Eurytus etc. in having the nepionic shell 

 proportionally large, post-nepionic whorls two or slightly less ; while 

 those groups have a much smaller nepionic shell, often very indis- 

 tinctly demarked, and more post-nepionic whorls. 

 The subgenus consists of two groups of species : 

 I. Strophocheilus (s. str.). Shell malleated ; no spiral striae, 



S. pudicus* 



II. Coniclus Alb. (restricted). Shell sculptured with minute spiral 

 striae 

 a. Surface of body-whorl finely malleated throughout. 



b. Obese ; peristome and parietal wall dark brown ; outer 

 lip toothed, unidentatus. 



bb. Oblong ; peristome rose and white ; lip not toothed, 



erythrosoma. 

 aa. Surface smooth or hardly malleated, lip roseate. 



b. Brown, with satiny bands ; spiral striae beaded ; earlier 



whorls spirally striated ; lip not toothed, milleri. 



bb. Yellow and rose ; earlier whorls vertically striated ; outer 



lip toothed, planidens. 



bbb. Chestnut colored, with zigzag streaks and spots of golden ;. 



outer lip not toothed, rhodocheilus. 



S. PUDICUS Muller. PI. 19, figs. 37, 38. 



Shell oval-oblong umbilicated, rather solid, roseeate under a thin 

 pellucid yellowish cuticle, the rose often fading to white on the back 

 of last whorl. Surface coarsely and irregularly netted with close Ion- 



