226 NESOPUPA. 



teeth of Nesopupa proper, while the rest of the shell, the shape 

 and smooth surface, is that of Vertigo. To unite the three 

 groups into one genus would obscure what vision we have of 

 their evolution, so that for the present I incline towards 

 recognizing both Ptychalcea and Nesopupa as genera. 



NESOPUPA (Vol. XXV, p. 274). 



Nesopupa (cfr. micro), Tera van Benthem Jutting, Treu- 

 bia VI, livr. 2, Feb. 1925, pp. 140, 143, fig. 1, is a species 

 found on the eastern part of Krakatau Island by Dammerman 

 in 1920. It is said to resemble N. micra of Mauritius, a form 

 of somewhat uncertain generic position, and which has not 

 been exactly described or figured (see Manual, XXV, p. 351). 

 The figures of the Krakatau form look like Gastrocopta; cf. 

 Manual, XXIV, pi. 23, 24. 



Nesopupa bandulana Connolly. PI. 29, fig. 15. 



Shell minute, ovate, thin, smooth, glossy, semi-transparent, 

 dark corneous-brown. Spire moderately produced, sides con- 

 vex, apex rounded. Whorls 4%, moderately convex. Apex 

 faintly microscopically punctate, later whorls sculptured with 

 the same faint punctation and very faint, comparatively dis- 

 tant, slightly oblique, transverse striae, hardly apparent under 

 50-fold magnification. Suture simple, shallow. Aperture 

 quadrate, narrowing and rounded at the base, with a pro- 

 nounced sinus at the top of the outer lip ; peristome white, 

 very slightly thickened; columellar margin a little reflexed; 

 dental processes six : a deep-set, in-running, mid-parietal 

 plait ; a smaller one, a little nearer the surface, half way be- 

 tween the last mentioned and the outer lip ; three rather deep- 

 set, equidistant, basal denticles, and an equally deep-set hori- 

 zontal lamella on the columella. Kima of moderate size. 

 Long. 1.5, diam. maj. 1.0 mm. (Connolly). 



Length 1.75, diam. 1.2 mm. ; paratype. 



Portuguese Southeast Africa: near Bandula Siding, B. & 

 M. Eailway (B. F. McDowell). 



Nesopupa oandtdana Connolly, Ann. Mag. N. H. (9), ix, 

 July 1922, p. 119. 



Here figured from a paratype supplied by Connolly. It is 

 remarkably like a Vertigo, but the strength of the angular 



