244 ACHATINELLA JUDDII. 



The type specimen measures, length 16, diam. 9.7, aperture 

 7.7 mm., but others of the lot from Kalaikoa, are larger, 

 length 18.1, diam. 10.5 mm.; whorls nearly 6 (pi. 42, fig. 8). 

 Some shells from Kalaikoa are more streaked, with faint 

 bands, as in those from Wahiawa. 



Shells from Ahonui, Gulick coll., are streaked as in those of 

 Wahiawa, but in some there are broad white zones cutting the 

 streaks into bands (pi. 42, fig. 7). 



In "Wahiawa" (pi. 54, figs. 14, 14a, Gulick coll.) and Wai- 

 kakalaua (pi. 54, fig. 10, coll. by Spalding) the bands are 

 merely indicated by pale spirals which cross the copious 

 streaks, which are of a light Payne 's gray or violet plumbeous 

 tint. This pattern also occurs in the more western localities, 

 as noted above. It is constant in a series of about 150 taken 

 by Mr. Spalding in Waikakalaua. Also in a series from ' ' Wai- 

 pio," Spalding coll. 



In a series from Waipio district, recently received from Mr. 

 Thaanum, collected by Mr. Kuhns, the pattern consists of 

 brown linear streaks on a pale Quaker drab ground, white, 

 below the suture and often at the base. This pattern usually 

 disappears rather abruptly on the last whorl or sometimes on 

 the penultimate (pi. 54, figs. 9, 9a, 96). There is also a very 

 pale specimen, yellowish at the base, with a chestnut-black 

 band below the periphery, another around the columella. It 

 approaches some forms of A. juddii. 



SERIES OF A. LIVTOA. 

 23. A. JUDDII Baldwin. PI. 49, figs. 17 to 22. 



"Shell dextral, imperf orate, solid, pyramidally conical, 

 apex obtuse; surface shining, covered with very delicate in- 

 cremental lines ; the nuclear whorls smooth. Color light gray, 

 shading into light chestnut on the apical whorls, the gray 

 more intense under the cuticle ; with two black lines, one be- 

 low and one at the periphery, the latter faint and continued 

 on the spire; between the lines a white band which revolves 

 on the suture to the very tip of the apex. Whorls 6, mar- 

 gined above, slightly convex ; suture lightly impressed. Aper- 

 ture oblique, oval, white, the light gray of the exterior surface 



