ACHATINELLA ROSEA. 153 



Length 22.3, diam. 13.6, aperture 11.5 mm. ; 6 l / 2 whorls. 

 Length 22.7, diam. 13, aperture 10.7 mm. 



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Specimens of a lot from ' Waialua, ' Thaanum, measure : 



Length 21.7, diam. 12.3, aperture 10.5 mm. ; GI/? whorls. 



Length 21.5, diam. 12, aperture 10.5 mm. 



Length 18.3, diam. 12.4, aperture 10 mm. 



Length 17.3, diam. 10, aperture 8.3 mm. ; 6 whorls. 



Specimens from Ahonui in Mr. Thaanum 's collection are 

 white and pink, the usual coloration. 



Messrs. J. S. and Oliver P. Emerson collected quantities of 

 dark-red rosea in the ravine in which the Waialua plantation 

 built its Kamoku reservoir, next west of Opaeula. This was 

 over fifty years ago, and the colony has been extinct these 

 many years. 



On the middle ridge of Poamoho (between the western and 

 central branches of the stream), a colony about a mile above 

 the forest limit contains shells with the last whorl white, white 

 with two rose bauds, or rose-tinted with deeper rose bands 

 defining a median white zone. The lip and columellar fold 

 are deep rose color. PI. 34, figs. 2, 2a, coll. by Irwin Spald- 

 ing. The same form has been given me by Mr. Thaanum, coll. 

 by Mr. Kuhns. A mile further up, just west of the main 

 ridge, the shells have the summit dark; color of last whorl 

 pinard yellow with white suture ; the same with tawny bands 

 and spire ; yellow ocher with tawny bands and darker spire, 

 or flesh color changing to coral-pink near the suture. In all, 

 the lip is more or less blackish (pi. 34, figs. 6 to 6c, coll. by 

 Irwin Spalding). These shells are small, length 18 to 19.5 

 mm. 



In Opaeula, at about 1,700 ft., Mr. Wilder found very dark 

 specimens, last whorl raw sienna with chestnut base, together 

 with pale green-yellow shells, both having the peristome and 

 summit dark (pi. 34, figs. 5, 5a) . It was probably lower down 

 that Gulick found the ordinary white and pink rosea from 

 Opaeula in his collection. 



Similar but larger shells were taken by Mr. Spalding in the 

 eastern branch of the north fork of Kaukinehua (pi. 34, figs. 

 7). Other specimens from the same or an adjacent col- 



