ACHATINELLA JUDDII. 245 



exhibiting a darker shade within; peristome acute, slightly 

 thickened within, a little expanded, columellar margin very 

 slightly reflected, white, the coloring of the exterior dark 

 lines reappearing rather more intense on the inner edge; 

 cohimella white, terminating in a moderately developed flexu- 

 ous fold. Length, 15; diam. 9y 2 mm.' (Baldwin). 



Oahu: Halawa (Baldwin) ; Aiea (Cooke, Spalding) ; east- 

 ern crest of Kalauao valley, and Kalauao-Waimalu ridge 

 (Spalding). 



Achatinella juddii BALDWIN, Proc. Acad. Nat. Sci. Phila., 

 1895, p. 216, pi. 10, f. 3, 4. 



'No opportunity for an examination of the animal has yet 

 occurred. The shell is typically very distinct from any other 

 known species. The light chestnut band on the apical whorls 

 is a characteristic and invariable feature. The basal portion 

 of the shell sometimes has a yellowish hue. In immature 

 shells the colors are more intense. 



"Named in honor of Hon. A. F. Judd, Chief Justice of the 

 Republic of Hawaii, by whose son the shell was discovered.' 

 (Baldwin). 



A. juddii was discovered by Mr. Albert F. Judd, the present 

 President of the Bishop Museum Board of Trustees. It is 

 related to A. papyracea, a more capacious shell. By the color 

 of its embryo and the gray-streaked pattern it is also related 

 to A. livida from which it differs by the more pyramidal shape 

 and various details of coloration. It is rather widely separ- 

 ated from other members of the papyracea and the livida 

 groups, and seems to be quite distinct from all other species. 



Figs. 17, 18 represent two of the type lot. All of the 

 Halawa shells sent by Mr. Baldwin (which are probably from 

 the Halawa- Aiea ridge) have a gray-streaked zone above the 

 periphery, bordered by a blackish or darker gray line below, 

 a white or yellowish subperipheral belt followed by a blackish 

 or dark-gray band, the base being white with faint gray 

 streaks, or straw yellow. The embryonic whorls are bicolored, 

 ochraceous with a white zone above the suture. 



In a series from Aiea, collected by Dr. Cooke on lehua trees 

 at top of ridge, the same pattern predominates ; but there are 



