312 mr. g. f. angas on new [ Mar. 5, 



Edward Bartlett. For Helix cornu-giganteum, Chemn., read H. 

 c/nestieriana, Crosse (seeJourn. de Conchyliologie, 1868, p. 269, pi. 

 ix. fig. 4). A large series of specimens of this latter species were 

 sent home lately from Madagascar by Mr. Waters ; and although I 

 observed certain peculiarities about them on comparing them with 

 typical specimens of H. cornu-giganteum, I then hesitated to sepa- 

 rate them from the latter species, regarding them as possibly a local 

 variety, and not being aware at the time that they had been elevated 

 to the rank of a species by M. Crosse. I have now great pleasure 

 in adopting that gentleman's name. 



Helix guestieriana differs from H. cornu-giganteum, Chemn. 

 (=.H. vesicalis, Lam.), in being somewhat smaller, paler in colour, 

 and more tumid, with the base less flattened and the umbilicus con- 

 cealed by a callus, and especially by having the inner lip constantly 

 more or less granulated — a character that I do not see referred to in 

 the description of the shell in the French Journal. 



Bulimus (Otostomus) quadrifasciatus, n. sp. (Plate XVIII. 

 %s. 2, 3.) 



Shell elongately ovate, rimate, moderately solid, shining, finely 

 longitudinally striated, white, transversely banded with light brown, 

 the last whorl with four bands, the central one being the widest ; 

 spire conical, apex obtuse ; whorls 6, somewhat convex ; aperture 

 oval, equal to the spire ; outer lip flattened and expanded at the 

 base. 



Alt. 1 inch 3 lines, diam. Gjy lines. 



Hab. Ecuador. 



Bulimus (Otostomus) napo, n. sp. (Plate XVIII. figs. 4, 5.) 



Shell rimate, ovately fusiform, moderately solid, shining, very 

 finely and irregularly striated, pale fawn-colour, with a narrow white 

 band next below the suture and a similar white band surrounding the 

 perforation ; spire sharply conical, somewhat obtuse at the apex ; 

 whorls 6, slightly convex ; aperture ovate, same length as the spire ; 

 outer lip expanded and flattened at the base, white behind, bordered 

 by a narrow suffused orange band. 



Alt. 1 inch 3 lines, diam. 5 •- lines. 



Hab. Ecuador. 



Bulimus (Eurytus) eros, n. sp. (Plate XVIII. figs. 6, 7.) 



Shell imperforate, oblong-ovate, thin, very finely and closely sha- 

 greened all over, the apical whorls marked with irregular longitudinal 

 striae, light-greenish olive, ornamented with small spots and cloudy 

 patches of a darker colour ; spire very short, apex obtuse, pink ; 

 whorls 4, rather convex, the last very large ; aperture ovate, more 

 than two thirds the length of the shell, effuse below ; outer lip 

 slightly expanded and reflexed, which, together with the columella 

 and the interior of the aperture, is of a bright rose-colour. 



Alt. 1 inch bh lines, diam. 8 lines. 



Hab. Ecuador. 



