PARTULINA, MOLOKAI. 33 



tinct (figs. 7, 8). According to Borcherding, this pattern comes 

 from Pelekunu. 



Another form has close hair-like lines, of brown, cream, and 

 pale lilac, in harmony with growth-lines, over the whole post- 

 embryonic shell. It is glossy, with typical embryonic colora- 

 tion (fig. 9). Borcherding figures a shell of this pattern from 

 Makakupaia. 



In fully adult shells the outer and basal lips expand slightly. 

 The lip and columella are brown in nearly all specimens, but 

 in some light ones it is a vinous brown. The interior varies 

 from nearly white to lilac or violaceous of various tints. The 

 surface is glossy, and the spiral strife weak or subobsolete. 



Length 26.5, diam. 15.5, aperture 14 mm.; 6f whorls. 



Length 24, diam. 14, aperture 13 mm. ; 6^ whorls. 



Color- var. schauinslandi Borcherding. PI. 9, figs. 10, 11. 



The shell is very glossy, white or yellowish white, uniform 

 or with faint, pale buff lines along growth lines on the last one 

 or two whorls. Interior white or pink, the narrow lip roseate- 

 brownish or nearly white, collumellar fold fleshy brown. The 

 suture has a distinct narrow margin defined by an impressed line. 

 Length 24, diam. 13, aperture 12 mm.; 6J whorls. 



Young shells are sometimes white above, yellow below the 

 angular periphery. In some specimens there are faint stripes 

 on the last embryonic whorl. These are transitions from 

 schauinslandi to the paler forms of proxima such as that from 

 Pelekunu valley, clearly showing its genesis from the latter, 

 the only difference being loss of color. This has been fully set 

 forth by Herr Borcherding, and is well shown by the large 

 series I have examined. 



Molokai: Kaluahauoni and Waileia (Meyer). 



12. P. THEODOREI (Baldwin). PI. 9, figs. 14, 15. 



Shell sinistral, minutely perforate, rather thin, narrowly 

 pyramidal, glossy, with sculpture of rather rude growth lines 

 and minute, rather weakly incised, spiral stria3. Embryonic 

 whorls whitish, the last one usually marked with broad, protrac- 

 tive brown stripes. Following whorls have irregular purple- 



