Descriptions of New Species of Achatmella. 235 



albo-cincta ; apice acutiuscula ; spira convexo-conica ; sutura margi- 

 nata, alba, modicc impressa ; anfr. 6^-, convexis ; plica colurnollari 

 mediana, alba, mediocri ; apertura truncato-ovali, intus albida ; perist. 

 intus incrassato ; rnarginc cxterno recto, arcuato ; columcllari dilatato, 

 adnato ; parietali nullo. 



Shell sinistral, imperforate, ovate-conic, solid, shining, stri- 

 ated, brown banded with white ; apex somewhat acute ; spire 

 convexly conic ; suture marginate, white, moderately im- 

 pressed ; whorls 6-|, convex ; columellar fold central, white, 

 lerately developed ; aperture truncately oval, white within ; 

 peristome thickened within ; with external margin unrefiected, 

 arcuate ; columellar margin dilated, adnate ; parietal margin 

 wanting. 



Length 0.79 inch (20 millim.) ; breadth 0.43 inch (11 millim.). 



Length of body whorl 0.55 inch (14 millim.). 



Average weight 4.75 grains. 



Station. — On trees. J. T. G. ! 



Habitat.— Waimea, Oahu. J. T. G. ! 



Remarks. — My specimens of this species are more or less 

 bleached and faded. Continued se&rch was made for living 

 specimens, but without success. 



55. Acliatinella forinosa. 



Plate VIII. Fig. 55. 



T. sinistrorsa, imperforata, acumiuato-ovata, solida, nitid&, striata, 

 alba, nigro-bifasciata ; apice acutiuscula ; spira convexo-conica ; sutura 

 marginata, bene impressa ; anfr. 6^-, convexis ; plica columcllari mediana, 

 alba, valida ; apertura truncato-auriformi, intus alba ; perist. intus in- 

 crassato; margine externo recto, arcuato, acuto; columcllari dilatato, 

 adnato ; parietali nullo. 



Shell sinistral, imperforate, acuminately ovate, solid, shining, 

 striated, white, with two black bands, one entering the aper- 

 ture, sometimes with the upper part of the whorl of a pale 



