80 PAKTULINA, MOLOKAI. 



fleshy-pink. Length 16, diam. 9 to 10 mm. See pi. 23, fig. 12 

 (copy from Reeve). Embryos of this form show very pala 

 wax-yellow bands proceeding from a yellow apex, which ap- 

 parently fade out in the adult stage. Waikolo and Puunea 

 specimens correspond exactly with Reeve's figure. The orig- 

 inal locality was probably Kalae, or perhaps Puunea, within 

 easy walking distance from Kalae. A series collected by 

 Cooke and Pilsbry in Puunea is figured, pi. 26, figs. 13 to 13c. 

 A little further north, between Puunea and Kilohana, there 

 are transition forms to mighelsiana, pi. 26, fig. 14, both color 

 and shape being intermediate in various examples. This 

 place is not far from the northern cliff. 



(&) Similar to the above, but lacking the peripheral chest- 

 nut band. Occurs with the typical pattern. 



(c) Both sutural and peripheral bands wanting. Colu- 

 mella and aperture white or pink. 



(d) Variously banded with chestnut, the bands often oc- 

 cupying most of the surface. Kalae (Meyer). 



(e) White, variously banded with chestnut or with a sutural 

 line only, or no bands whatever, the umbilical region alone 

 yellow tinted, or sometimes also white. 



(/) Bicolored, white above, greenish-yellow or olive below 

 the periphery. Aperture and columella white or pink. May 

 be a derivative of forms g or c. 



(g) Same as /, but having a dark sutural line, sometimes a 

 subperipheral line also, and occasionally an olive line in the 

 middle of the upper surface. Fig. 9. This form is evidently 

 a derivative of the typical ~bella pattern. 



Whether the more eastern of Borcherding's localities really 

 have bella forms I do not know, but the typical bella coun- 

 try is in the region southward of the Leper Settlement pen- 

 insula. A series from Ualapue, collected by Mr. Thaanum 

 (pi. 26, figs. 15 to 15e) seems to carry ~bella into the polita 

 area. I do not know the locality of pi. 23, figs. 2-8, collected 

 by Mr. Meyer. 



43&. P. MIGHELSIANA POLITA (Newcomb). PI. 24, figs. 1 to 6. 

 Shell dextral, conic-ovate, polished, light-yellow, a portion 



