234 RHODEA. 



ate; whorls 6 including the nucleus, moderately convex, 

 brilliantly glossy, subplicate below the suture. Color trans- 

 lucent greenish-black, the last whorl marked with a dis- 

 tinctly denned white band. Columella subreflexed, white. 

 Lip simple, acute. Aperture somewhat narrowed towards 

 the base. Length 13 mm. (Dkr.) . 



Colombia: Pasto, in damp woods (F. C. Lehmann). 



Bulimus alb o-l alt eat us DKR., Jahrb. d. D. Malak. Ges. 

 ix, 1882, p. 378, pi. 11, f. 7, 8. 



The white belt of the last whorl is largely concealed on 

 the upper whorls. In the single specimen taken, there were 

 two shining yellowish-white pearl-like eggs, 2 mm. in 

 diameter. 



9. S. VESPERUS (Jousseaume). PL 37, fig. 91. 



Shell ovate-acuminate, thin, very glossy, obsoletely stri- 

 atulaite, greenish-black with a single white zone. Spire 

 rather long conic, the apex obtuse. Whorls 6, a little con- 

 vex, the last ample, a little descending in front. Aperture 

 oval; peristome simple, acute; eolumellar margin whitish, 

 straight. Length 17, diam. 8, aperture 8.5 x 4 mm. (Jouss.}. 



Ecuador: Los Puentos, near Quito (A. Cousin). 



Mesembrinus vesperus Jouss., Bull. Soc. Zool. de France 

 xii, 1887, p. 168, pi. 3, f. 2. COUSIN, t. c. p. 234. 



This species, of which but one example was taken, evidently 

 stands close to 8. alb ob alt eat us, differing in little except the 

 larger size. 



Genus RHODEA H. & A. Ad. 



Rhodea H. & A. ADAMS, Genera of Recent Mollusca ii, 

 p. 135, for calif arnica Pfr. (Feb. 1855). CROSSE, Journ. de 

 Conchyl. 1876, p. 5. SYKES, Journ. of Malacol. viii, 1901, 

 p. 20 (catalogue). 



The shell is imperforate, either dextral or sinistral, pillar- 

 shaped or tapering, with obtuse smooth apex; the earlier 

 whorls are convex, the later flat or concave, last whorl 

 acutely carinate in the middle, deeply concave below the 

 keel. The aperture is oblique, subtriangular, channelled at 



