ACHATINELLA C^ESIA. 263 



mellar fold central, rose or white, moderately 'developed; 

 aperture semiorbicular, white within ; peristome slightly thick- 

 ened within ; with external margin unreflected, arcuate, acute ; 

 columellar margin dilated, adnate; parietal margin wanting. 

 Length 16y 2 , breadth 10, length of body-whorls 12% mm. 

 Average weight 4.6 grains. On the leaves of trees. Waimea, 

 Pupukea, Waialei, Kahuku and Hauula J. T. G. ! Kaawa, J. 

 S. Emerson ! The dextral specimens are for the most part 

 found in Waimea and Pupukea. This and the two preceding 

 species [albescens and dimorpha] vary much in form and 

 size' (Gulick). 



Achatinella contracta. PL 47, fig. 19, copy of original fig- 

 ure. "Shell sinistral, imperf orate, broadly conic, solid, shin- 

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

 sutural, the other revolving just above the suture on the spire 

 and encircling the base near the periphery of the body-whorl ; 

 apex somewhat acute, white with brown suture ; spire regu- 

 larly 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 IS 1 /^ breadth 9, length of body- 

 whorl 10 mm. Average weight 4 grains. On trees. Kaawa, 

 J. S. Emerson ! Hauula, J. T. G. ! The sutural band is 

 sometimes wanting, and some specimens have another band 

 entering the aperture. I have but one specimen from Hauula, 

 which is of the last mentioned variety, and is rather larger 

 than those from Kaawa. It is allied to A. zonata, nob., and 

 A. undulata Newc.' (Gulick). 



27. A. ODSIA Gulick. PL 44, figs. 13 to 16. 



"Shell sinistral, imperf orate, ovate-conic, solid, shining, 

 striated, so streaked with white and fawn brown as to have a 

 gray appearance ; apex somewhat acute ; spire convexly conic ; 

 suture marginate, moderately impressed ; whorls 6i/2, convex ; 

 columellar fold central, white, moderately developed; aper- 

 ture sinuately oval, white within ; peristome slightly thick- 

 ened within ; with external margin unreflected, arcuate, acute, 

 edged with brown ; columellar margin, dilated, adnate ; parie- 

 tal margin wanting. Length 18 1 /-?, breadth 10%, length of 

 body- whorl 13 mm. Average weight 4 grains' (Gulick}. 



"This with A. concidens and A. formosa nob., which are 



