254 ACHATINELLA CURTA. 



a pink band (like A. delta var. &. of Gulick), and various 

 forms of the undulata pattern (pi. 45, figs. 4 to 9), from the 

 pattern figured by Newcomb to forms with the streaks almost 

 or entirely wanting, the band remaining. A last vestige of 

 the undulata pattern is usually visible in a minute irregu- 

 larity or mottling of the dark peripheral band in specimens 

 which have otherwise the color of curia. There are also 

 tawny-streaked forms without a band, the typical undulata 

 pattern. 



Helemano. In a small ravine south of Helemano, Mr. 

 Spalding found curta, with chestnut sutural band and plain 

 (no. 2274-5 of his coll.). His no. 2268 from Helemano have 

 a yellow base, white above. Gulick found the same form, 

 which he called A. delta var. b. (pi. 46, figs. 6, 7, 8). Gulick 

 also obtained a large series of typical rhodoraphe in Helemano, 

 which he regarded as the metropolis of this form (pi. 46, 

 figs. 1, 2, no. 92210 A. N. S.), associated with specimens like 

 pi. 45, fig. 3. In a gulch west of Helemano Mr. Spalding 

 found curta with black and with pink sutural border, and 

 with a light brown subsutural line, in the same colony (pi. 46, 

 figs. 3, 4). 



' l Waialua ' ' is the type locality of curta and undulata, but 

 just where Newcomb collected in the extensive district which 

 went under his name, I do not know. Perfectly typical curta 

 has been taken by Mr. Thaanum on the left side of Poamoho, 

 with specimens without the chestnut sutural band (pi. 45, figs. 

 12, 13). Mr. D. D. Baldwin obtained typical undulata and a 

 pale form perhaps referable to emersoni in "Waialua," local- 

 ity not more exactly given (pi. 45, figs. 14, 15, 16). 



In the bottom of gulch east of Opaeula along the stream, 

 Mr. Spalding took curta with the sutural band: (a) blackish- 

 chestnut, (6) varying to tawny, approaching rhodoraphe, and 

 (c) with brownish vinaceous streaks on a cream-buff ground, 

 suture with a narrow tawny band (pi. 46, fig. 9), also vary- 

 ing to nearly white. Some have more or less olive-yellow suf- 

 fusion of the base or last whorl. This form approaches 

 undulata. There are also white and yellow curta without 

 sutural band in this colony, which is related to the streaked 

 form from Kawaiholona. 



