26 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO3 



11. Large obese shells found mostly in zone III, region IT, and 

 zone \\, region Ilia, between Moanalua and Waiawa Streams. Em- 

 bryonic whorls moderately pointed, usually white but sometimes 

 cream buff; mean length, 18.5 to 21.5 mm. 



Group of A. a. fiirgida Newcomb 



a. ovum Pfeiffer 



a. bruneola, new subspecies 



a. aureola, new subspecies 



a. zvaimaluetisis, new subspecies 



a. turgida Newcomb 



a. nieadowsi, new subspecies 



a. perplexa Pilsbry and Cooke 



a. nigripicta, new subspecies 



a. cookei Baldwin 



a. simulacrum Pilsbry and Cooke 



a. ruhidilinea, new subspecies 



a. chromatacme Pilsbry and Cooke 



a. griseihasis, new subspecies 



a. alhipraetexta, new subspecies 



Note. — A. a. chromatacme differs from the remaining subspecies 

 of this group in having shells with darker embryonic whorls of tan 

 or yellowish brown. A. a. griseihasis has more loosely coiled em- 

 bryonic whorls which are intermediate between the embryonic whorls 

 of the groups of A. a. turgida and A. a. leucorraphe. 



b. Embryonic whorls white in a few forms, but usually they are 

 tinted with buff or yellow, or are a deep shade of yellow or yellowish 

 brown. 



I. Small shells probably from zone I or lower zone II, region IV, 

 between South Kaukonahua Stream and North Helemano Stream. 

 All forms extinct as far as is known. Gray or gray-brown lined or 

 streaked color patterns, embryonic whorls white or tinted cream color. 



Group of A. a. coniformis Gulick 



1. A. a. coniformis Gulick 



2. A. a. apexalba, new subspecies 



3. A. a. versicolor Gulick 



4. A. a. wahiawa, new subspecies 



II. Shells with color patterns of light pastel shades of pink, yellow, 

 deep cream, or blue gray, usually lightly axially streaked with simi- 

 lar colors darker than the ground color. They occur in zone II and 

 probably zone I, region IV, between South Kaukonahua Stream and 



