1899.] NATURAL SCIENCES OF PHILADELPHIA. 397 



Glandina michoacanensis n. sp. 



Shell obesely fusiform, rather thiu, of a rather dark dull reddish 

 color, with an irregular, pale sutural border. Surface slightly 

 shining, coarsely and irregularly plicate and finely plicatulate 

 longitudinally, the foldlets conspicuously decussated, cut into 

 oblong grains, the spirals becomiug obsolete at the extreme base. 

 Spire rather thick, continuing stout above, the apex obtuse. 

 Whorls 7 to 7^, the earlier 2^ smooth, the next one evenly rib- 

 striated, the last whorl obloug, rather obese, tapering below. Su- 

 ture well impressed, coarsely and irregularly denticulate. Aperture 

 rather small, its length (measured obliquely) a little exceeding half 

 that of the shell ; outer lip gently convex ; columella quite con- 

 cave in adult, straighter in immature specimens, strongly truncated 

 at base. 



Alt. 48.5, diara. 20.5, longest axis of aperture 25.7, gi'eatest 

 width 9.5 mm. 



Uruapam, State of Michoacan, Mexico. 



This species belongs to the first (Plexce) of the several sections 

 formed by Dr. von Martens in his excellent account of the genus in 

 the Blologia Centrali- Americana. It might reasonably be supposed 

 that so large a species from central Mexico would be known, but 

 a thorough search through the literature, with the considerable 

 collection of the Academy as a basis for comparison, fails to locate 

 the specimens within any of the numerous Mexican species hitherto 

 described. The dark, reddish color and conspicuous sculpture are 

 its more striking features. 



Streptostyla novoleonis n. s-p. 



Shell cylindric-obloug, bluut at the ends, dark reddish brown, 

 very glossy, almost smooth, the growth-wrinkles being incon- 

 spicuous. Spire short, conic, the apex obtuse. Whorls 6^, slowly 

 increasing, the latter half or three-fourths of the last one very 

 rapidly descending, the last whorl generally suddenly deflexed at its 

 termination. Aperture very long and narrow ; columella short, 

 rather thiu, moderately twisted. 



Alt. 17.2, diam. 7, length of aperture 12 mm. 



Alt. 16, diam. 6.7, length of aperture 11.8 mm. 



Diente, near Monterey, State of Nuevo Leon, Mexico. 



Smaller than S. shuttleworthi and the varieties subordinated 



