AchaiincUa Multizonata. 75 



This group comes nearest, in color, to A. bcllula Smith, but differs 

 in form and size from that species. 



The seventh group is made up of the color-variety Z. This 

 color-variety agrees with several of the other color-varieties in the 

 markings of the lower whorls, but differs from them in the very 

 dark banded apex. Of this group 96 per cent, were found on sub- 

 ridges I and II ; 70 per cent, were found on guava, and 23 per cent, 

 on lehua. 



The seventeen sub-ridges on which these shells were found 

 may be divided into six districfts, according to shells found on them. 

 The first district comprises the sub-ridges I and II. The charadler- 

 istic color-variety of this district is Z. This color-variety repre- 

 sents 72 per cent, of the shells from this district; 96 per cent, of 

 this color-variety are from these two sub-ridges. 



The second district comprises the sub-ridges III-V. The 

 charadleristic color-variety of this district is N. All the specimens 

 of this color- variety were from this district. 



The third district is made up of sub-ridges VI-VIII. Group 

 five contains the chara(5leristic shells of this district, from which 

 48 per cent, of this group came. 



The fourth district is made up of the sub-ridges IX-XIII. The 

 characfteristic shells of this district are group two ; 47 per cent, of 

 this group were from this district. 



The fifth district is made up of the sub-ridge XIV. The fifth 

 group charac5lerizes this district ; 48 per cent, of this group are 

 from this district. This group represents 64 per cent, of the shells 

 from this district. 



The sixth district is made up of sub-ridges XV-XVII. The 

 sixth group contains the characfteristic shells of this district. All 

 but two specimens of this group were from this district. 



There are seven of the color-varieties of which over 95 per cent, 

 came from two or three consecutive ridges. These are: H, with 

 97 per cent, from sub-ridges XIII-XIV ; J, with 95 per cent, from 

 XII-XIV ; N, with 100 per cent, from III-V ; O, with 96 per cent, 

 from XIII and XIV; W, with 100 per cent, from XVI-XVII ; 

 X, with 100 per cent, from XV-XVII; and Z, with 96 per 



