MEXICAN LEPTINARIA. 319 



finely striatulate and ornamented with somewhat distant, 

 membranaceous and more or less caducious riblets, whitish. 

 Whorls 61/0, the upper ones a little convex, the suture dis- 

 tinct, subgradate, last whorl very convex at base, somewhat 

 sack-like. Aperture a little oblique, trapezoidal, the outer 

 margin convexly arched forward, basal margin well rounded; 

 columeUar margin thick, vertically ascending, encircled at its 

 lower part with a strong, entering lamelliform fold, dilated 

 above. Parietal wall covered with a wide callus bearing a 

 slender spiral lamella in the middle (Marts.). 



Length 12, diam. 6.66, aperture 6x6 mm. 



Length 11, diam. 6, aperture 5.5 x 3.5 mm. 



Length 10, diam. 5.5, aperture 4.5 x 3 mm. 



Length 9!/2, diam. 5, aperture 5x3 mm. 



The diameter of the aperture includes the columellar mar- 

 gin (Marts.). 



Costa Rica: Puerto Viejo (Biolley) ; Alto de Mano Tigre, 

 near Terraba (Pittier). 



L. solida MARTS., Biologia, p. 321, pi. 18, f. 18 (Oct., 1898). 



38. L. ELIS;E Tristram. PI. 42, fig. 38. 



Shell conic-ovate, rather thin, semipellucid, glossy, very 

 delicately striate; spire obtuse, conic, suture profound. 

 Whorls 5 to 6, convex, the last more than half the length of 

 the spire, smoothish. 'Columella intorted, pearly whitish in- 

 side; peristome expanded, the right margin sulcate, com- 

 pressed ; aperture acutely one-toothed on the inner margin. 

 Length 10.5, diam. 6 mm. (Tristram'). 



Guatemala: Coban (Salvin). 



Leptinaria eliscc TBISTR., P. Z. S., 1861, p. 231. FISCHER 

 et CROSSE, Miss. Scient. Mex., Moll., i, p. 625. MARTS., Bio- 

 logia, p. 322, pi. 18, f. 19. Tornatellina e., PFR., Monogr., 

 vi, p. 263. 



"The two specimens of this species sent for examination 

 by Mr. Salvin have the shell moderately thin, imperforate, 

 nearly smooth, ovate, pale yellowish, the whorl before the 

 last rather large, the last seen from the dorsal side being to 

 the rest of the length of the shell as 1 : %. The columellar 



