92 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO3 



half chamois; first postembryonic whorl light buff, with a central 

 line of cinnamon buff, on the penultimate whorl, the subsutural band 

 light pinkish cinnamon, remainder of the whorl light brownish drab, 

 faintly spirally lined and axially streaked with pale pinkish cinnamon, 

 last whorl subsutural band avellaneous, below which is a line of 

 cartridge buff, supraperipheral band pale pinkish iuff axially streaked 

 with brownish drab, basal band same color but also spirally lined with 

 brownish drab, peripheral band cartridge buff; lip cinnamon shading 

 to white within ; columella callus white ; impressed sutural band shades 

 from cameo brown on the first two whorls to wood brown on the first 

 half of the last whorl to cinnamon on the last half whorl. Length 

 16.8 mm., greater diameter 12.3 mm., spire height 8.4 mm., number 

 of whorls 6. 



Distribution, area 66??: Waipio, Gulick. Gulick also reports the 

 subspecies from Ahonui, Kalaikoa, Wahiawa. The district of Waipio 

 includes Waikakalaua and Kipapa Gulches. The holotype of A. a. 

 polymorpha surely did not come from north of Kipapa Gulch as 

 Gulick reports, because the range of color patterns of one race does 

 not extend over several gulches, although the same pattern may be 

 repeated in widely separated areas. The holotype probably came 

 from lower Kipapa or Panihakea Gulch in the district of Waiawa be- 

 cause it is similar to the shells existing in that region today. I have 

 tentatively plotted the possible region of the type locality, area 66??, 

 on fig. 5a, p. 105. Holotype, MCZ 39901. 



A specimen (pi. 8, fig. 28) with a color pattern similar to the holo- 

 type has the embryonic whorls pale pinkish buff, banded on the lower 

 half of the last embryonic whorl with light buff, on the first embryonic 

 whorl at the edge of the suture a line of benzo brown ; postembryonic 

 whorls pale pinkish buff, first postembryonic whorls spirally lined 

 with wood brown, last two whorls banded with drab, the bands lined 

 and streaked with cinnamon drab and benzo brown ; impressed sutural 

 band russet shading to tawny on the last whorl ; lip, outer margin 

 cinnamon buff, inner margin and columella callus white. Length 

 16.4 mm., greater diameter 11. 7 mm., spire height 8.8 mm. 



The color pattern on a sinistral shell (pi. 8, fig. 28a) is much lighter 

 and shows an elongate specimen ; the first embryonic whorl and a half 

 bicolored, upper half white, lower half hair brown, remaining em- 

 bryonic whorls white, banded on the lower fourth of the whorl with a 

 faint shade of cream buff ; postembryonic whorls avellaneous spirally 

 lined, banded, and streaked with white ; impressed sutural band snuff 

 brown on the first whorl lightening to light pinkish cinnamon on the 

 last two whorls ; lip not formed. 



