98 PARTULINA, SECTION BALDWINIA. 



ties and the shells differ much in shape. Mr. Homer, of Ku- 

 kuihaele, has succeeded in selecting from several thousand 

 no fewer than 200 and odd more or less distinct varieties. 

 For the present purpose of the author it will suffice to enum- 

 erate a few only of the more marked forms in the author's 

 own collection. 



" 1. Uniform light gray, with or without faint brown 

 markings on apical whorls. 



" 2. Distinct brownish-gray with more or less distinct mark- 

 ings on apical whorls. Undoubtedly these two forms, the 

 second being but a slight variation of the first, are to be con- 

 sidered as the typical ones of the colony; at a rough guess 

 one-half of all would come under one or the other. 



"3. Dark brown, almost -chestnut, with lighter colored 

 apical whorls; lower whorl sometimes with, sometimes with- 

 out, gray spots. 



" 4. Light gray with broad or narrow light-brown band 

 across body whorl. 



"5. Light gray with broad white band across body whorl, 

 bordered with narrow brown band. 



" 6. Light gray, more or less streaked and spotted with 

 brown; a distinct white band on body- whorl bordered by a 

 chestnut band. 



" 7. Light gray, with chestnut body- whorl bordered above 

 and below with white. 



" 8. Many-banded with alternate bands of brown and 

 white from apex to base, some narrow, some broad. 



" 9. Dwarfed and somewhat distorted form, running 

 through all the above variations, and found only on mamani 

 trees (Sopkora chrysophylla) . 



[Plate 16, figs. 2 to 12, represent shells from this colony.] 



" The exact size and shape of the above varieties vary 

 almost interminably and, it is perhaps needless to say, inter- 

 grade with each other completely. 



" The above brief notes afford but little idea of the great 

 variety and apparent distinctness of some of the color forms. 

 Many species of the genus Ackatinella appear in printed lists 

 which are based upon color characters much less marked than 



