Shells from South America. 511 



wliitish ; peristome thin, slightly reflexed ; columella de- 

 scending obliquely over the narrow umbilicus and suffused 

 into a very thin callus, which joins the lip above ; aperture 

 inversely auriform. 



Alt. 28, diara. maj. 11*5 mm. 



Aperture: alt. 12, diam. 5*5 mm. 



Ilah. E. Bolivia. 



The above species recalls in many ways Balimulus lilia- 

 ceus, Y6v., from Porto Rico ; among the shells received from 

 Bolivia at the same time there are a number of specimens 

 which would appear to be the young of the present species ; 

 some of these are stained with bright pink about the umbilical 

 region, a character which is totally lacking in the adult shell. 



Bulimulas (^Drymceus) interruptus, sp. n. (Fig. 1.) 



Shell fusiform, thin, semitransparent, yellowish white, 

 painted with five reddish-purple bands, the first four of which 

 are broken up so as to appear as rows of squarish blotches, 

 the fifth uninterrupted ; whorls 5^, rather flat, transversely 

 sculptured with lines of growth ; sutures impressed ; colu- 

 mella somewhat arched and reflexed over the very narrow 

 perforation ; peristome acute, slightly reflexed, especially 

 towards the base ; aperture oval. 



Alt. 25'5, diam. maj. lO'O mm. 



Aperture: alt. 11, diam. 6"5 mm. 



Hab. Merida, Venezuela. 



The shell appears to be greatly variable ; its principal 

 forms are mentioned below. 



Form " u." — Painted with transverse bands of reddish 

 purple, interrupted for a space of about 1^ mm. at the peri- 

 phery ; the last band, which is uninterrupted in the type, is 

 absent in this form. 



Form " /S." — Transverse bands more closely set and un- 

 interrupted ; ground-colour of shell flesh-colour. 



Ya,Y. palliduSjXiov. (Fig. 2.) — Shell of a uniform yellowish- 

 white colour, smoother than the type, the growth-lines being 

 not nearly so noticeable. 



Var. pallidus, form " y." — Flesh-coloured throughout. 



YsiY. pallidus, form '^8." — Pale yellow throughout. 



Bulimulus {Drymceus) selli, sp. n. (Fig. 3.) 

 Shell fusiform^ narrowly perforate, very thin, vitreous, 



