86 AURICULELLA, OAHU. 



Summit Waimano-Manana ridge. Uniform yellow, or with, 

 the spire slate or vinaceous rufous; in the latter case some- 

 times having a peripheral band of the same color. Found in 

 ieie axils. Figs. 17-19. 



Waiawa; Ahonui, also Opaeula. Dark olive-buff, becoming 

 white on the back and base, spire sometimes rufous; peristome 

 white. 



Kalaikoa; Wahiawa. Similar to preceding, or cinnamon or 

 tawny olive, spire light or dark; peristome white. These are 

 like two of the common Waolani patterns. 



Poamoho. Like figs. 9, 20, 13, or rarely with a rufous 

 peripheral band. 



Helemano (fig. 20), Kawailoa, Waialee, Pupukea. Amber 

 yellow with white sutural line and white peristome. 



On the north side of the main range, the specimens from 

 Hakipuu and Kaliuwaa are yellow, with, white sutural line. 

 Those from Kahaluu are plain yellow, white, or cinnamon 

 (the base a little lighter), or the spire is cinnamon, last whorl 

 white with a cinnamon band. 



The localities " Kaala and Mt. Tantalus (Perkins) " are 

 doubtful, the first certainly erroneous, probably based upon a 

 specimen of A. ambusta obliqua. 



The range of pulchra eastward is still rather indefinite. 

 From the western ridge of Nuuanu and westward, A. auricula 

 is not found; but some specimens not distinguishable from 

 pulchra are found in the A. auricula territory. Thus at the 

 base of the eastern ridge of Nuuanu, in the Luakaha district, 

 opposite the reservoir, the authors found a few pulchra among 

 the much more numerous A. auricida. A Kalihi series from 

 the Gulick collection is clearly pulchra. The shell is white 

 with yellowish spire, or greenish yellow above the periphery, 

 the tubercle in the angle well developed. Even among Gu- 

 lick 's Palolo auricula, one can find some individuals with the 

 characters of pulchra. Yet as a general rule, only auricula is 

 found east of Nuuanu. 



8. A. AMBUSTA Pease. PL 23, figs. 1, 2. 



" Shell solid, imperforate, conically ovate, sinistral " [or 



