STROBILOPS, MEXICO, CENTRAL AMERICA. 35 



Height 1.55, diam. 2.4 mm. ; 5 whorls. Paratype. 



Height 1.5, diam. 2.2 mm. ; 4% whorls. Type. 



Guatemala : near Jocolo, in beach debris of Lake Izabal (A. 

 A. Hinkley). 



Strohilops streheli guatemalensis Hinkley, Nautilus, vol. 34, 

 Oct., 1920, p. 52. 



There is an obvious error in the measurement of width as 

 printed in Hinkley 's description. The type is figured. 



6. Strobilops veracruzensis, new species. PI. 4, fig. 6 ; pi. 9, 

 figs. 1, 2, 3. 

 The shell is pyramidal, the spire with weakly convex out- 

 lines, periphery bluntly subangular, base moderately convex. 

 Umbilicus narrow, its width contained about 10 times in the 

 diameter of the shell. Surface slightly glossy, the initial l^/o 

 whorls smooth, next whorl with some fine striation, after 

 which there are narrow, oblique ribs, mdely and unevenly 

 spaced, passing over the periphery but then disappearing ex- 

 cept around the margin of the umbilicus and behind the lip, 

 leaving the greater part of the base smooth. The whorls are 

 moderately convex. The aperture is oblique ; peristome blunt, 

 expanded, thickened within, dull orange-cinnamon, the pari- 

 etal callus rather thin. The parietal lamella penetrates in- 

 ward about two-thirds of a whorl, its edge inwardly having 

 numerous low nodes. The infraparietal lamella emerges, but 

 not to the edge of the callus, and inwardly it is shorter, length 

 about half a whorl, and more conspicuously nodose than the 

 parietal, the nodes rugose. Between the inner ends of these 

 lamellaB there is a short, low interparietal lamella, consisting 

 of a series of about half a dozen rugose tubercles strung 

 together. Nearly a half-whorl inward there is a small blunt 

 columellar lamella, a larger inner basal fold, followed by a 

 much larger, high and long basal, and at some distance 

 peripherad a long, rather low and laminar third basal fold 

 (PL 9, fig. 2). 



Height 1.9, diam. 2.1 mm. ; 5^ whorls. 



Mexico: neighborhood of Vera Cruz (H. Strebel). 



StroiUa labyrinthica, (Umgegend von Vera Cruz), Strebel, 



