1S1 Descriptions of New Species of Achatinella. 



columellar margin slightly dilated, corneous, adnate ; parietal 

 margin very thin. 



Length 0.30 inch (7f mill.). ' Breadth 0.15 inch (4 mill.). 



Length of body whorl 0.21 inch (5^ mill.). 



Average weight 0.20 grain. 



Station. — On damp ground in the woods. J. T. G. ! 



Habitat— Punaluu, Oahu. J. T. G. ! 



Var. b. — With stronger columellar fold. 



Habitat— Hauula, Oahu. J. T. G. ! 



Var. c. — A. little larger ; color, pale amber. 



Habitat — Helemanu, Oahu. J. T. G. ! 



Remarks. — This species is thinner and more elongate than 

 A. gummea Nob., with body whorl not so large, lip not thick- 

 ened, and columella scarcely plicate. 



There is a variety found in ICailua and Waimanalou with 

 stronger columellar fold, and more regularly conic spire. 



12. Achatinella triticea. 



Plate VI. Fig. 12. 



T. dextrorsa, imperforate, clongato-ovata, tcnui, nitida, pellucida, pal- 

 lida cornea, levissime striata ; apicc acutinscula, pallida ; spira convexo- 

 conica ; sutura simplici, levitcr impressa ; anfr. 6i, conycxiusculis ; plica 

 oolumellari mediana, alba, sub-lamelliformi ; apertura sinuato-pyriformi ; 

 pcrist. vix incrassato ; margin c dcxtro recto, arcuato ; columellari dila- 

 tato, corneo, adnato ; parietal i nullo. 



Shell dextral, imperforate, elongately ovate, thin, shining, 

 pellucid, pale corneous, very hnely striated ; apex somewhat 



