174 ACHATINELLA PUPUKANIOE. 



(Irwin Spalding, W. D. Wilder). Also " Mauna Kope " a 

 peak at head of the Kalihi-Moanalua ridge (Wilder). 



This beautiful shell is the most ornate of the fuscobasis 

 series. It is isolated from lyonsiana and fuscobasis by the 

 deeply cut Nuuaiiu valley, which even at the pali is lower 

 than any form of fuscobasis has been found. The Lanihuli 

 colony is practically a pure race ; the splitting of the basal 

 patch into bands in one lot from Mr. Wilder, and the varia- 

 tion in the subsutural white border being fairly referable to 

 " fluctuating variation.' In the specimens taken by Spald- 

 ing on the Koolau side of the peak the basal dark area is un- 

 split (fig. 2). 



On the peak at the head of the Kalihi-Moanalua ridge there 

 are shells with the typical pattern, a few with darker periph- 

 eral and basal bands on a tawny ground (pi. 40, figs. 3, 3&) 

 and others with a tawny ground and blackish-chestnut base 

 (A. castanea pattern), the subsutural border white. Both of 

 these are rare mutations. 



12. A. PUPUKANIOE Pilsbry & Cooke, n. sp. PI. 35, figs. 14 

 to 17. 



The shell is dextral, conic, the greatest diameter near the 

 base, solid, brilliantly glossy; uniform white, ivory yellow 

 with white sutural line, or either of these tints- with a burnt 

 sienna band immediately above, a wider and darker one 

 below the periphery. Suture margined but without a dark 

 line. Spire white. Lip not expanded, the edge brownish, 

 internal rib white, or sometimes the whole lip is pale-pink. 

 Columellar fold rather strong and abrupt, white. 



Length 16.3, diam. 9.7, aperture 7.8 mm. ; 6 whorls. 



Length 16, diam. 9.2, aperture 8 mm. 



Oahu : Crest of the Waimano-Manana ridge, 1 to 1% miles 

 from its junction with the main range. Types 108068 A. N. 

 S. P., Pilsbry, 17-11-1913 ; also head of Waiawa valley, Irwin 

 Spalding. 



This species, which I collected in company with Messrs. 

 Spalding and Merriam, has a great resemblance to A. fusco- 

 basis ; but that is invariably sinistral, and separated from tho 



