PARTULINA, MOLOKAI. 37 



conic; suture impressed, whorls 6, convex, sometimes sub- 

 angular above, the last equal to half the length of the shell. 

 Aperture vertical, ovate; columellar fold superior, strong, white; 

 lip slightly expanded, callous within; leaden-gray, encircled 

 with lines or bands of reddish-brown, the last whorl ornamented 

 with a white band at the base. Length 25, diam. 13 mm. 

 (Pease). 



Molokai (Pease); Kawela and Makakupaia (Meyer). 



Partulina compta PEASE, Journ. de Conchyl. xvii, 1869, p. 

 175; P. Z. S. 1869, p. 647. BORCHERDING, Zoologica xix, p. 

 57, pi. 3, f. 14-16, 18-20. 



"This species, which comes from the island of Molokai, is 

 very closely related to P. splendida Newc., which lives on Maui. 

 It is more contracted at the base and sometimes has a peculiar 

 angulation of the upper part of the whorls. In coloration it is 

 nearer P. grisea Newc." (Pse.). 



The ground-color is white or nearly so in the specimens fig- 

 ured by Borcherding and before me in the Academy, Cooke and 

 University of Wisconsin collections. Otherwise they agree well 

 with Pease's description. It would probably be more correct 

 to describe the shell as brown, pale or dark, cut by white bands 

 and lines. It differs from A. redfieldi by its white coiumella 

 and lip. The following race is almost fully connected with 

 compta by intermediate specimens, and may perhaps be found 

 to be superfluous. I retain it here because both Borcherding 

 and Hyatt have recognized it, though under different names. 



146. P. dwightii concomitans Hyatt, n. var. PI. 8, figs. 9 to 13. 



Similar to dwightii in the acutely pyramidal contour, solidity, 

 wide white lip, etc. ; but it differs by the predominance of chest- 

 nut-brown (rarely olive-brown) which forms nearly a solid 

 color on the last two whorls except that there is a subperipheral 

 white belt and sometimes a white line on the upper surface, 

 continuing on the penultimate whorl; the suture has a narrow 

 white edge. 



Molokai (A. N. S. P. and Cooke collections): Makakupaia 

 (figs. 9, 10, 12), Kawela (fig. 11) and Makolelau (Meyer). 



Partulina grisea Nc., BORCHERDING, Zoologica xix, p. 69, pi. 



