Descriptions of New Species of Achatinella. 239 



Length 0.65 inch (16£ millim.); breadth 0.40 inch (10 raillim.). 

 Length of body whorl 0.49 inch (12§ millim.). 

 Average weight 4.60 grains. 



Station. — On the leaves of trees. J. T. G. ! 

 Habitat. — Waimea, Pupukea, Waialei, Kahuku, and Hauula, 

 Oahu. J. T. G. ! Kaawa, Oahu. J. S. Emerson ! 



Remarks. — The dextral specimens are for the most part 

 found in Waimca and Pnpukea. 



This and the two preceding species vary much in form and 

 size. 



59. Achatinella contracta. 



Plate VIII. Fig. 59. 



T. sinistrorsa, imperforata, late conica, solida, nitida, striata, cincrea 

 vel flava, nigro-bifasciata ; apicc acutiuscula, alba ; spira conica ; sutura 

 marginata, modice imprcssa ; anfr. b\\ convexiusculis ; ultimo magno ; 

 plica columcllari mediana, alba, valida ; apertura truncato-auriformi, 

 intus albida ; perist. intus iucrassato ; margine extemo recto, arcuato, 

 subacuto ; coluinellari dilatato, adnato ; parietali nullo. 



Shell sinistral, imperforate, broadly conic, solid, shining, 

 striated, ash or fawn colored, with two black bands, one sutural, 

 the other revolving just above the suture on the spire, and en- 

 circling the base near the periphery of the body whorl ; apex 

 somewhat acute, white with brown suture ; spire regularly 

 conic ; suture marginate, moderately impressed ; whorls 5^, 

 slightly convex ; the last large ; columellar fold central, white, 

 strong ; aperture truncately auriform, white within ; peristome 

 thickened within ; with external margin unreflected, arcuate, 

 subacute ; columellar margin dilated, adnate ; parietal margin 

 wanting. 



Length 0.53 inch (13|- millim.); breadth 0.36 inch (9 millim.). 



Length of body whorl 0.39 inch (10 millim.). 



Average weight 4.00 grains. 



