210 Descriptions of New Species of Acliatinella. 



Length 0.76 inch (19£ mill.) ; breadth 0.36 inch (9 mill.). 



Length of aperture 0.31 inch (S mill.). 



Average weight 3.50 grains. 



This variety approaches and passes into A. terebra Newc. 

 The two species are, however, distinctly characterized ; the 

 latter being more strongly sculptured, having the aperture more 

 elongately oval, and the suture more distinctly margined. 



Var. d. — With black or brown spiral bands. This passes 

 into A. splendida Newc., but is distinguished by its smaller 

 size and stronger columellar fold. Rather rare. 



Var. e. — White. This passes into A. attenuata Pfr. 



Var. f. — Pale ash-color. Passes into A. undosa Nob. 



Var. g. — Pale yellowish brown. Passes into A. crocea 

 Nob. 



Station. — On the Alii and other low trees, in damp elevated 

 regions. E. B. ! 



Habitat. — Wailuku, Maui. E. Bailey ! 



36. Acliatinella crocea. 



Plate VII. Fig. 36. 



T. dextrorsa, perforata, conico-ovata, solida, vix nitida, leviter striata, 

 et sub lente lineis spiralibus, confertissimis, undulatis distincte decussata, 

 lutea ; apice subacuta, albido et luteo oblique notata ; spira couica ; 

 sutura simplici, subimpressa ; anfr. 6, convexiusculis ; ultimo in medio 

 subplanato, yW longitudinis aequante ; plica, columellari mediocri, alba ; 

 apcrtura parum obliqua, sinuato-ovali, intus nivea ; perist. non expanso, 

 intus modice incrassato ; margine columellari dilatato, albo, patente ; 

 parietali nullo. 



Shell dextral, perforate, conic-ovate, solid, scarcely shining, 

 lightly striated, and microscopically distinctly decussated with 

 crowded undulating spiral lines, orange yellow; apex subacute, 



