1895.] NATURAL, SCIENCES OP PHILADELPHIA. 219 



Achatinella is given in the preface to this article. The species has 

 a central tooth which is long and slender, with a small reflection and 

 two minute cutting points. (H. Suter.) 



This distinct species is dedicated to Prof. A. B. Lyons, of Oahu 

 College, who has done much to stimulate the study of the Hawaiian 

 laud fauna. 



Aohatinella Lymaniana, n. sp. PI. X, figs. 12, 13. 



Shell sinistral, very minutely perforated, solid, ovate; spire con- 

 vexly conical, apex subacute; surface shining, covered with fine 

 incremental lines, under a strong lens showing minute decussating 

 stripe ; apical whorls smooth, when not eroded. Color dark purplish 

 brown, sometimes with longitudinal or transverse white flecks or 

 zigzag lines ; a white line traversing the suture ; apex light chestnut. 

 Whorls 6, very lightly margined above, somewhat convex ; suture 

 moderately impressed. Aperture oblique, white within, sublimate ; 

 peristome acute, thickened within, expanded, the columellar margin 

 slightly reflexed and covering the small perforation, color white on 

 both face and the reverse ; columella white, terminating in a slightly 

 developed flexuous fold. 



Length, 20} ; diam., 11 £ mm. 



Habitat, Waianae Mts., Island of Oahu. 



No opportunity for an examination of the animal has yet occurred. 



This species is typically very distinct from any other known species 

 of the bulimoid section of Achutinella. 



Named in honor of Mr. Ernest Lyman, to whom science is in- 

 debted for many additions to Hawaiian land shells. 



Section APEX von Martens. 

 Aohatinella vespertina, n. sp. PI. X, fig. 14. 



Shell dextral, minutely perforated, solid, globose, with the spire coni- 

 cal, lateral outlines slightly concave, apex subacute; surface shin- 

 ing, striated with delicate growth lines; apical whorls smooth. Of 

 a uniform delicate cream color, lighter on the upper whorls and 

 sutures ; sometimes with a few faint, white transverse lines on the 

 lower whorl. Whorls 6, narrowly margined above, the first three 

 plain, the rest slightly convex, the last somewhat inflated; suture 

 lightly impressed. Aperture very oblique, oval, white within; peris- 

 tome white, acute, thickened within, somewhat expanded, the basal 



