316 ACHATINELLA SWIFTH. 



36a. A. SWIFTII CHROMATACME ii. subsp. PI. 59, figs. 5, 5a, 



The shell is dextral, imperforate, solid, with straight-sided 

 or very slightly concave spire ; glossy ; embryonic shell chest- 

 nut brown with pale or whitish spirals, and fading to white 

 at the apex. Later whorls copiously streaked with burnt 

 umber (varying to blackish) on a warm buff ground; the 

 streaks usually blended together more or less, and not reach- 

 ing up to the suture, and usually interrupted by a white line 

 or band at the periphery. There are also, in some specimens, 

 indistinct pale spiral lines over the streaks. In other speci- 

 mens of the type lot the ground-color is white, and the mark- 

 ings olive gray ; the embryonic whorls colored as in the other 

 pattern. The suture is margined with an impressed line on 

 the last 2!/2 or 3 whorls. Whorls not very convex, the last a 

 little inflated in some individuals. Aperture pale blue within, 

 the lip and columellar fold lilac, lip dark-edged. 



Length 20, diam. 12.5 mm. ; 6 1 /^ whorls. 



Length 18.4, diam. 13 mm. 



Length 18.4, diam. 12.5 mm. 



Waiawa. Cotypes no. 108804 A. N. S. P. and in Bishop 

 Mus., from Mr. Thaanum's collection. 



This peculiar form was collected by Mr. Kuhns, who se- 

 cured a good series. The dark colored embryonic shell with 

 white apex is peculiar and unlike any other known form of 

 the region. The strongly tinted lip and columellar fold as 

 well as the more produced spire are unlike A. swiftii; and in- 

 deed, chromatacme is grouped with A. swiftii merely as a 

 temporary expedient, because one feels some diffidence about 

 proposing a "new species" in the turgida-swiftii group. It 

 does not seem to be directly related to any form of A. turgida 

 I have examined, yet the possibility of such a relationship 

 must be considered. 



' 



. A. (SWIFTII?) DOLIUM Pfeiffer. PL 30, fig. 15. 



Shell perforate, ovate-conic, rather thin, lightly striatu- 

 late, little shining, pale buff variegated with brownish bands 

 and narrow streaks ; spire conic, apex rather acute ; suture 

 scarcely marginate; whorls 6, convex, the last a little longer 



