ACHATINELLA LIVIDA. 249 



size yet discovered is given in the measurement. Length 14, 

 diam. 7 twentieths of an inch." (Newc.) 



Oahu: Waialua (Newcomb) ; Wahiawa (Cooke) ; Helemano 

 and Kawailoa (Gulick, chiefly sinistral form). 



Achatinella recta NEWC., P. Z. S. 1853, p. 145, pi. 23, f. 45, 

 1854. PPR. Monogr. iv, 535. GULICK, Evolution, Racial and 

 Habitudinal p. 41, pi. 2, f. 3 (Kawailoa). Achatinella glauca 

 GULICK, Ann. Lye. N. H. vi, p. 60, pi. 8, f. 51, 1858. 



Doctor Newcomb 's figure is reproduced on pi. 30, fig. 45. 

 A topotype from Newcomb, typical in pattern, is before me. 

 There is a broad purplish-brown band at the periphery, an- 

 other below it, and a very faint band in the middle of the 

 upper surface, cuticle yellow on the last whorl, lighter above. 

 Others of the same lot are bandless, or have a wide zone in 

 place of the two bands, pi. 53, figs. 13, 14, 15. The surface is 

 nearly smooth, under a lens showing light growth-lines and a 

 very faint oblique lineolation. The dark bands color the 

 internal lip-callus, which is thin and inconspicuous. The 

 columellar fold is rather small. As in A. livida, an ochra- 

 ceous band may usually be made out below the suture of the 

 embryonic whorls, but it is often very pale. 



The locality "Nuuanu valley" given by Mr. Sykes is a 

 mistake. Some other form, perhaps multizonata, must have 

 been taken for recta. 



Except in color, and in being partly dextral, recta does not 

 differ materially from livida. The classification of recta in 

 Bulimella with A. pulcherrima or A. ~byronii by various au- 

 thors is not easy to account for, as the lip is quite unlike those 

 forms. A majority of the specimens before me are sinistral, 

 but dextral shells are in the lots from Waialua, Kawailoa and 

 Wahiawa. 



Kawailoa. In a lot of 68 taken by Gulick, three are dextral. 

 The ground-color varies from straw yellow to citron yellow. 

 The bands vary from dark chestnut to honey yellow or paler. 

 Usually there are only two bands, one above, the other below 

 the periphery, but in a few there is a sutural band also. 



Two bands present, light in 14, dark in 11 shells. 



One band (ii) present, light in 32, dark in 7 shells. 



