508 



PROCEEDINGS OF THE ACADEMY OF 



[Aug., 



narrower and distinctly retracted at the base, the outer lip, in profile, 

 curving backward there, while in bisuturalis it is nearly straight. 

 Length 41 , diam. 18.5, length aperture 22.5 mm. 



" 43.5, " 18 , " " 25 " whorls 5|. 



" 41.5, " 18 , "• •' 23.6 " " 5f. 



•' 42.5, " 18 , " " 23.3 " " 5J. 



Between Tabernillo and San Pablo. Types No. 101.314, A. N. S. P., 

 collected by Dr. A. P. Brown. 

 This is further northwest than any Auris has been found hitherto. 



Leptinaria panamensis n. sp. Fig. 4. 



The shell is narrowly perforate, turrite-conic, thin, corneous, trans- 

 lucent, glossy, and smooth except for very faint 

 growth-lines. Whorls 6£, moderately convex. Aper- 

 ture ovate, subvertical. its length contained 2f times 

 in that of the shell. Outer lip thin, arching forward 

 somewhat above the middle. Columellar margin 

 reflexed, tapering downward, armed below the middle 

 with a strong oblique lamella. 



Length 8, diam. 3.3, length of aperture 3 mm. 



Between San Pablo and Tabernillo, on the new- 

 line of the Panama Railroad. Types No. 101,320, 

 A. N. S. P. 



This species is closely related to L. mexicana Pfr., 

 but differs by its smooth surface. 



Fig. 4. — L. pan 

 amensis. 



Salasiella browni n. sp. Fig. 5. 



The shell is subcylindric, the upper third tapering, thin, pale 

 yellowish, polished, irregularly sculptured with very 

 strongly arcuate growth wrinkles. The spire tapers 

 slightly to the obtuse apex. Whorls oh, strongly 

 convex, joined by a deep suture. Aperture very 

 narrow in the upper half. Outer lip thin, arching 

 very strongly forward in the middle. Columella 

 slightly concave, truncate as usual. 



Length 10.2, diam. 4, length of aperture 6 mm. 



Las Cascades. Types No. 101,325, A. N. S. P. 

 Also taken between Tabernillo and San Pablo. 



The largest shell, a dead one from the last locality, 

 measures: Length 12, diam. 4.5, aperture 7.2 mm.; 



whorls 5^. Named for Dr. Amos Brown, who Fi 5 g browi 



collected the specimens. 



'■in . 



