348 ACHATINELLA MUSTELINA. 



Lihue. This is a district of somewhat indefinite limits r 

 where Gulick, Newcomb, and other naturalists of their day 

 collected, on the east and southeast slopes from Kanehoa. In- 

 deed, Lihue ("Lehui") and Mokuleia seems to have been the 

 chief sources of their Waianae shells. 



In the large Lihue series before me from Gulick the muste- 

 lina-multilineata forms have a wide sutural white band, as in 

 Popouwela. They vary widely in size, from IS 1 /^ x 10 to 2Qy 2 

 x 13^3 mm., and a few have the turbiniformis contour. They 

 have linear streaks of fawn on a buff ground, with or without 

 dark and light spiral lines or bands. PL 63, fig. 13cZ is a 

 slender shell of this series, others of the Gulick lots are fig- 

 ured on pi. 61, figs. 7, la. They resemble the Popouwela shells, 

 and also, in some specimens, are remarkably like A. decora. 



A. m. bicolor 'Gulick' Pfeiffer is typical of Lihue. PL 63, 

 figs. 13 to 13c, Gulick collection. It is chestnut-brown to 

 blackish carob-brown below, white above. Typically the white 

 should extend almost to the periphery, and leave a mere line 

 of dark brown above the suture, but in the series of over 200 

 before me, this ideal is rarely attained. The white band com- 

 monly varies from 1% to 4 mm. wide on the last whorl. The 

 sutural border is often tawny. The summit is warm or ochra- 

 ceous buff, paler or dusky at the tip, and often has paler bands 

 on the last embryonic whorl. Figs. 13&, 13c show unusual ex- 

 tremes of shape. With the lots of bicolor there are a few 

 shells transitional to the pattern shown in pi. 61, figs. 7, la. 

 Probably the bicolor occurs low, the lighter form higher on 

 the ridges, with more or less admixture in the colonies. The 

 original description of bicolor follows. 



"A. [chatinella] bicolor 'Gulick' Pfr. Shell subperforate, 

 globose-conic, solid, lightly striate, glossy; whitish, obliquely 

 streaked with brownish ; spire conic, with rather acute apex, 

 white ; suture broadly impressed-marginate ; whorls 51/2, the 

 upper ones flat, penultimate more convex, the last nearly equal 

 to the spire, globose, black-chestnut below the periphery. 

 Aperture oblique, subauriform ; columellar fold high, nodi- 

 form ; peristome labiate within, brown-bordered, the right 

 margin narrowly expanded ; columellar margin dilated, sub- 

 adnate. Length 16!/2, diam. 11 rnm. ; aperture 8% mm. long, 

 5 wide. Inhabits Lehui, island of Oahu' : (Pfr.). 



