178 PROCEEDINGS OF THE ACADEMY OF [April, 



sculpture of vertical striae cut into beads by close spiral-lines. On 

 the last whorl the ribs and intervals do not end abruptly. The base 

 has weak spiral impressed lines. The aperture is rhombic; columella 

 thin and very slightly sinuous. 



Length 3.7, diam. 0.75, length of aperture 0.6 mm.; 9 post-nuclear 

 Avhorls. 



Type No. 3035, A. N. S. P. 



The microscopic sculpture is a distinctive feature of this species. 



Turbonilla (Tragula) egressa n. sp. 



The shell is slender, with a depressed-helicoid nuclear shell, fully 

 half immersed. Following whorls are subangular and overhang the 

 suture, and are flattened above the angle. Sculpture of rounded 

 vertical riblets as wide as their intervals on the first two whorls, but 

 gradually becoming more spaced, so that on the last 3 whorls the 

 intervals are wider. First three post-nuclear whorls have in the 

 intercostal intervals a single rounded cord on the angle, another 

 very weak one below the upper suture. On the next two whorls 

 there is an additional cord above the angle, another just above the 

 suture, and the subsutural cord is obsolete. Last whorl has the 

 vertical ribs extending nearly to the axis, the intervals crossed by a 

 spiral cord at, another above the periphery, and two strong cords on 

 the base, followed by about four faint ones, very low and difficult 

 to see. The aperture is ovate; columella thin, straight above, but 

 showing a small, sharp, oblique plait in an obliquely basal view. 



Length 2.5, diam. 0.75, length of aperture 0.65 mm.; 6^ post- 

 nuclear whorls. 



Type No. 3095. 



Odostomia (Odostomia) ingloria n. sp. 



Shell oblong-conic with obtuse summit, the first whorl convex, 

 turned down at the tip; following whorls fiat, with the suture rather 

 deeply impressed. Last whorl rounded peripherally'^, narrowly 

 rimate. Aperture ovate; columella a little thickened, bearing a small 

 oblique plait. Surface plain. 



Length 2.05, diam. 1 mm.; 5 whors. 



Type No. 3087, A. N. S. P. ^ 



An allied form, which may be called 0. ingloria calvata differs by 

 its shorter whorls, the last one noticeably subangular in front. 

 Length 2.5, diam. L05 mm.; slightly over 6 whorls. 



Type No. 3088, A. N. S. P. 



