110 NESOPUPA. 



Sterkia calamitosa martiniana Pils. PI. 15, fig. 4. 



The shell is very similar to S. calamitosa but differs by the 

 larger size and longer whorls, and the presence of a supra- 

 palatal tubercle (rarely wanting). 



Length 1.95 mm., diam. 0.9 mm. ; fully 5 whorls. Type. 



Length 1.75 mm., diam. 0.9 mm. ; 5 whorls. Paratype. 



Length 1.60 mm., diam. 0.9 mm. ; smallest. 



San Martin Island, off Lower California, under stones 

 among plant debris (G. D. Hanna). 



Sterkia calamitosa martiniana Pilsbry, Proc. Calif. Acad. 

 Sci. (4), vol. 16, p. 186, pi. 12, fig. 2. April 22, 1927. 



There are a few beautiful albino specimens in the lot. 

 While very close to mainland calamitosa, the small differences 

 seem to indicate a slightly differentiated insular race. 



NESOPUPA (Vol. 25, p. 274). 



Nesopupa corrugata (Preston). Vol. 25, p. 362, 5th line 

 from bottom : for Fig. 14 read Fig. 12. 



Nesopupa rodriguezensis Connolly. PI. 21, fig. 8. 



Shell minute, acuminate ovate, rimate, smooth, semi-trans- 

 parent, moderately glossy, dark corneous brown. Spire 

 moderately produced, sides convex, apex bluntly rounded. 

 Whorls 414, rather convex, gradually increasing; apex 

 smoothly granulate; remainder, under fifty-fold magnifica- 

 tion, similarly granulate and sculptured with regular, nearly 

 straight, fine, slightly oblique transverse striolae, a little less 

 than half as broad as the space between them ; suture deep and 

 simple. Aperture subquadrate, rounded at the base; per- 

 istome whitish, very slightly expanded, outer lip nearly 

 straight and perpendicular in profile, but conspicuously sinu- 

 ate in plane just below the suture, dental process five-fold : a 

 short blunt plait at the angle of the paries and outer lip, and 

 a much longer one, parallel to it and much more deeply inset, 

 in the centre of the paries; a conspicuous denticle, equally 

 deeply inset, running out towards the point of the latter from 

 the base of the siuulus; a longer denticle, more deeply inset 



