ACHATTNELLA VULPINA. 223 



Halawa valley is type locality of A. analog a Gulick in which 

 the shell is two or several banded with deep brown, and 

 A. longispira Smith, which has green and brown spiral lines 

 typically, but is never gametically pure, as many other pat- 

 terns occur in the colonies. There are blends between the 

 analoga and longispira patterns. There are also specimens re- 

 ferred by Mr. Gulick to fuscolineata Smith, but which seem 

 to me to be split-banded individuals of analoga. A selection 

 from the Gulick series is figured, pi. 40, figs. 15 to 15d, analoga, 

 and pi. 41, figs. 5 to 5g, longispira. A peculiar analoga with 

 the fuscolineata pattern from the western valley of Halawa is 

 shown in pi. 40, fig. 13, coll. by Spalding. 



In the middle fork of Halawa Mr. Thaanum obtained a fine 

 set of virens (pi. 40, figs. 14, 14&), pure except for variations 

 in the ground-color, which may be apricot yellow or olive, as 

 in figs. 14, 14a, or a deep green, like pi. 40, fig. 10. All are 

 sinistral. 



Aeia. The prevalent variety is a fine form of virens similar 

 to the Halawa lot described above. The color varies from 

 chestnut or olive (like pi. 40, figs. 14, 14a, Halawa) to black- 

 ish green ( pi. 41, fig. 6, Aeia). The summit of green in- 

 dividuals is frequently marked with chestnut on the first 

 neanic whorl, sometimes on the embryonic whorls also. Occa- 

 sionally there are two dark bands, showing some tincture of 

 analoga blood; and in some colonies rare specimens have the 

 longispira pattern. All are sinistral. 



In the Cooke collection there are a few shells similar to the 

 dwarf race of upper Moanalua, the color chestnut below, paler 

 upwards. 



Waimalu valley. Yellow and chestnut forms of virens 

 with the usual sutural band are in Mr. Spalding 's collection. 

 All sinistral. 



Waiau. Mr. Spalding found green virens patterns, together 

 with longispira pattern, all dextral. 



Waimano. Dr. Cooke collected green virens, olivacea and 

 a form (pi. 41, fig. 7) resembling colorata, except that it has 

 no dark sutural band. 



Manana. On the western ridge Mr. Wilder collected green 



