ACHATINELLA STEWARTII. 207 



coll.). Gulick specimens from Manoa, exact locality not spe- 

 cified, show the same patterns (pi. 38, figs. 5, 6, 6a). There 

 are also a few of the stewartii pattern suffused and streaked 

 with pink. Mr. Spalding has also collected stewartii, forms 

 1, 2 and 3, on the Manoa side of the Manoa-Palolo ridge. 



Makiki valley has various forms not found on the Manoa- 

 Palolo ridge. A series is shown in pi. 38, figs. 14, 19 to 19c, 

 coll. by Gulick; fig. 17, Cooke coll., and figs. 18, 18o, from 

 Thaanum. The usual pattern has an ochraceous-orange tone, 

 shading towards burnt sienna on the latter part of the last 

 whorl (fig. 18), or there may be two dark lines or bands (fig. 

 19a), or the bands may unite to form a broad black-brown 

 zone (fig. 19c), or the whole lower part may be blackish (fig. 

 18a) or chestnut (fig. 17) ; all having the blackish border be- 

 low the suture. Reeve's A. adusta has the same pattern. 

 Other lots in the Gulick collection have four blackish bands on 

 a citron or colonial buff ground, the shell dextral (fig. 14). 

 There are also Makiki specimens like pi. 38, figs. 16, 4a and 5. 



Rarely A. stewartii occurs with white ground and the usual 

 sutural and columellar bands and purplish columella. One 

 lot from Makiki in the Gulick collection contains a specimen 

 with the ground pure white ; one white with the base pale 

 yellow, the whole faintly streaked with pale pinkish cinnamon 

 (pi. 38, fig. 16), another similar but having an incomplete 

 zone of chestnut streaks below the middle, and some paler 

 lines, (fig. 16a). These shells were thought by Gulick to be 

 A. fuscozona, but I feel sure that they are stewartii. 



Near the top of Mt. Tantalus there is or was a hand- 

 some form with the last whorl chestnut-black, lighter or yellow 

 below the black sutural border (pi. 38, fig. 20, Cooke coll; 

 fig. 21, Gulick coll.). It approaches A. vulpina, but seems to 

 be a melanistic form of stewartii. 



Yla. A. STEWARTII PRODUCTA Reeve. PL 38, figs. 7 to 13 ; pi. 

 43, figs. 10 to 106. 



' * Shell somewhat elongately conical, dextral ; whorls con- 

 vex, slightly margined at the sutures ; columella conspicuously 

 callous-toothed; apex rather small. Olive-green, apex, colu- 



