NO. I ACHATINELLA APEXFULVA DIXON WELCH 73 



embryonic whorl cartridge-buff with the tip either white or a little darkened, 

 bluish or fleshy, the rest of the embryonic whorls white. First neanic whorl 

 often marked with brown. The lip is vinaceous pink or light brownish vinaceous, 

 fading on the rather strong lip-rib. About 6 percent are sinistral. 



Length 20.7 mm., diam. 13.6 mm., 63 whorls. 



Length 18.0 mm., diam. 12 mm. 



Lateral spurs, and northern ridge of Waimano Valley, C. M. Cooke. Cotypes, 

 1 192 Cooke coll. and 108802 A.N.S.P. 



The grayish color and pale lip are the chief characters of this race, of which 

 there are about 130 specimens in Dr. Cooke's collection. It varies a good deal. 

 The bluish-gray streaks are often absent, or visible only on the bands, and 

 the latter vary from light to dark. The sutural margin is usually touched faintly 

 or distinctly with tawny. Figures 5, 5a are typical patterns. 



Distribution, area 40: Waimano-Manana Ridge, locality 221^*, 

 elevation 1,050-1,100 feet, 1926; 222*, elevation 1,100-1,150 feet, 

 1929, both collected by Meinecke (figs. 4, 4a, p. 53). Cooke's type lo- 

 cality in Waimano probably extends over areas 40 and 44, because the 

 type lot (BBM 72723-72753) contains a mixture of the typical pcr- 

 plexa patterns of area 40 and the nigripicta var. i patterns which in the 

 Meinecke collection are limited to area 44. Other collectors of this 

 form are Wilder, BBM 50550-50551, and J. S. Emerson, BBM 

 102243. The Emerson lot is dominantly from the upper region of 

 area 44, while the Wilder lots come mostly from the lower area 40. 

 Both lots have many intermediate forms the patterns of which would 

 identify them with either area. 



Pilsbry's plate 56, figure 5, is considered the lectotype and is re- 

 produced in this paper on plate 6, figure 16. The figure is slightly 

 larger in proportion to the other figures. All the typical perplexa 

 forms of the original Cooke lot are studied. The usual form (pi. i, 

 fig. 47) and gray pattern on about 55 percent of the shells has the 

 embryonic whorls white; first half postembryonic whorl pale pinkish 

 bufif axially streaked with cinnamon, remaining postembryonic whorls 

 white finely axially streaked and lined with light drab or a shade 

 between light drab and tawny olive, peripheral band on last whorl 

 white ; impressed sutural band a faint shade of tawny olive ; lip 

 and columella callus seashell pink. Length 18.4 mm., greater diameter 

 12.8 mm., spire height lo.o mm. 



A variant of the typical color pattern, which may be considered a 

 grayish pattern (pi. 6, fig. 17), has the first half postembryonic whorl 

 sayal brown banded with a line of pale pinkish buff, last half verona 

 brown ; penultimate whorl drab streaked and tinted with benzo brown 

 on the first half of the whorl, lower fourth of the whorl banded with 

 pale gull gray, last whorl pale gull gray axially streaked with white. 



