ACHATINELLA VULPINA. 221 



pattern is found with similar shells having a dark sutural 

 border, and pale mauve columellar fold, the virens pattern. 

 A few shells have some darker green spirals on the last whorl, 

 suggesting longispira (fig. 5&). 



Lower, towards the head of Waolani valley the color be- 

 comes paler (pi. 40, fig. 5c) the general tone olive-yellow, 

 varying toward green or yellow ocher in different specimens ; 

 sometimes with a few green spiral lines ; the sutural border is 

 often paler, and the spire partly white. 



Kalihi valley. A fine series in coll. L. A. Thurston, from 

 the southeastern branch above the waterfall, contains deep and 

 light green olivacea, deep chestnut and yellow forms of virens, 

 and the longispira pattern. It is a hybrid colony. 



Kalihi valley is also the locality of Mr. G-ulick's A. cucumis. 

 It is a slightly roughened form of olivacea and virens. The 

 color is olive with light yellowish olive streaks, colonial buff 

 with streaks of honey yellow, or ochraceous buff with blended 

 chestnut streaks. There is often a dark sutural line, as in 

 virens, but in a third of the lot the ground-color extends to 

 the suture. There is rarely a pale peripheral line or nar- 

 row band. The shape varies from ovate-conic to somewhat 

 pyramidal. There is a slight rim or thickening within the 

 lip. All the specimens seen are sinistral. I imagine that the 

 slight corrugation is due to unfavorable (dry) station of the 

 individual colony, and probably not a racial character. Two 

 of the original lot are figured, pi. 40, figs. 6, 6a. 



Kahauiki. A hybrid segregating into virens, longispira 

 and suturalis patterns is prevalent. There are also longispira- 

 analoga hybrids, and shells suffused and streaked with chest- 

 nut. These patterns are shown in pi. 40, figs. 7 to 7c, ridge 

 running up from Fort Shaf ter ; figs. 8, 9, central ridge ; figs. 10 

 to 10<i, western ridge ; all collected by Mr. Irwin Spalding. 

 Some from the western ridge also have the pattern of pi. 

 40, fig. 8. 



A special Kahauiki pattern is shown in pi. 40, fig. 9, cen- 

 tral ridge of Kahauiki. The shell is yellow, green or chestnut, 

 with a broad chestnut band below the suture. This may be 

 called the suturalis pattern. It occurs in a nearly pure 



