24 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO3 



line at the lower edge of the whorl, which finally may fade out en- 

 tirely on the last quarter whorl. 



a. Embryonic whorls pointed. First embryonic whorl light reddish 

 brown (pecan brown, army brown, walnut brown, sepia), remaining 

 embryonic whorls usually white. Exceptions are A. a. buena, A. a. 

 cinerca, and A. a. hanleyana, which have yellow or yellow-banded 

 embryonic whorls (such as pinkish buff, tilleul buff, cinnamon buff). 



I. Small usually lowland forms, occurring mostly in zone 11,^ re- 

 gions I, la, which may be white or buff, lined, banded, streaked, or 

 spotted with brown or reddish brown, or the patterns may be gray or 

 gray brown. The mean length ranges from 15.5 to 20.5 mm. 



Group of A. a. cestus Newcomb 



1. A. a. muricolor, new subspecies 



2. A. a. waialaeensis, new subspecies 



3. A. a. forbesiana Pfeiffer 



4. A. a. fuscostriata, new subspecies 



5. A. a. innotabilis Smith 



6. A. a. cestus Newcomb 



7. A. a. simulator Pilsbry and Cooke 



8. A. a. buena, new subspecies 



9. A. a. globosa Pfeiffer 



10. A. a. hanleyana Pfeift'er 



11. A. a. simulans Reeve 



II. White obese forms lined with reddish brown having a mean 

 length of 18.5 to 20.5 mm., and occurring in zone III, regions I, 

 la. They are larger than shells belonging to the group oi A. a. cestus. 



Group of A. a. vittata Reeve 



1. A. a. vittata Reeve 



2. A. a. cinerea Sykes 



3. A. a. albofasciata Smith 



4. A. a. oliveri, new subspecies 



5. A. a. rubidipicta, new subspecies 



b. Embryonic whorls blunt, usually banded with yellow. Forms 

 occurring between North Waiawa Stream and the upper portion of 

 the North-South Kaukonahua Ridge. 



I. The color pattern may have the white ground tinted or banded 

 with buff or gray, or the ground may be buff or a light shade of gray. 

 The shell is usually lined or banded with gray, reddish brown, or 



1 For discussion of zones and regions see pp. 189, 190, and figs. 7, 8, pp. 194, 195. 



