WA1ANAE SPECIES. 



341 



ground for allowing it specific rank, as a working arrange- 

 ment. A. concavospira does not seem directly related to 

 lymaniatia, which inhabits the same district, but rather to the 



SKBTCH OF WAIANAE RANGE, THE PRINCIPAL RIDGES REPRESENTED BY LINES. 



bicolor stock. The area of concavospira and lymaniana forms 

 a long and narrow extension of the tree-shell country, which 

 broadens out from Lihue westward. 



