ACHATINELLA TURGIDA. 295 



eastern ravines of Waiawa below the forest fence, no. 1861 

 coll. Spalding, some of which are illustrated in pi. 56, figs. 1 

 to Ic. It seems likely that the original lot came from this 

 part of Ewa district, and I propose that it be considered the 

 type locality. In one lot taken by Mr. Spalding there are 

 49 dextral, 38 sinistral shells. The first 2% whorls are ivory 

 yellow, the next (and last) embryonic whorl nearly or quite 

 white. The following neanic whorls almost always have a 

 nearly black band below the suture. The last whorl varies a 

 good deal in marking. 



(1) Ground yellow, mottled with brownish black, the mark- 

 ings sometimes arranged more in bands, sometimes more in 

 streaks (pi. 56, fig. 1Z>). 



(2) Ground yellow below, white above the periphery; more 

 or less mottled, and usually with some blackish bands (New- 

 comb's figure, pi. 29, fig. 10a; also pi. 56, fig. Ic). 



(3) Ground white, variously mottled and streaked or 

 banded with purplish black (Newcomb's figure, pi. 29, fig. 10; 

 also pi. 56, figs. 1, la, 2). 



(4) All post-embryonic whorls black (pi. 56, fig. 4). This 

 pattern is rather rare. 



All of these patterns except the last vary individually in 

 amount of marking in any lot, and there are also differences 

 between different lots in average tint. Thus, Mr. Spalding 's 

 lot no. 1898, from the forest fence colony, is as a whole darker 

 than his 1861 from the ravines below. One of Gulick's lots, 

 probably from lower down, is lighter than either (pi. 56, figs. 

 3, 3a). These differences are only noticeable in the mass. 

 Rarely two patterns of coloring may be seen on different parts 

 of a single shell, as in the specimen figured by Mr. Sykes, 

 Fauna Hawaiiensis, pi. xi, figs. 6, 7. 



The swollen shape of the last whorl in A. turgida has been 

 noted by Dr. Newcomb, but the contour varies rather widely. 

 The aperture is bluish white within, lip hardly expanded, well 

 thickened within, flesh color. Whorls 6 to 6 1 /3- Length 20.3, 

 diam. 13 mm. Length 18.2, diam. 14 mm. 



A peculiar pattern, white with gray markings, was noted in 

 the Spalding collection, no. 581, from the central ridge of 



