PARTULINA, MAUI. 47 



Achatinella pyramidata GUL. , Ann. Lye. vi, p. 204, pi. 7. f. 

 32, 1856. BALDWIN, Catalogue p. 7. SYKES, Fauna Hawaii- 

 ensis p. 317. 



Figured from a typical specimen from the Gulick collection, 

 no. 92704 A. N. S. P. 



11 This shell differs from the A. splendida Newc. in its smaller 

 size and pyramidal form, with spire less convex, body-whorl 

 less ventricose, aperture smaller and less oblique, lip less ex- 

 panded and reflected. It also differs in being without perfora- 

 tion, and is very rarely sinistral. 



"The A. perdix Reeve differs from this in its broader and 

 more ventricose form, its more convex spire, with whorls more 

 swollen, with aperture broader, and frequently subangulated, 

 the arrangement of colors is also different. Looking only at the 

 type of this species, it would be placed in the same group with 

 A. splendida, yet it is so closely connected by intermediate varie- 

 ties with A. perdix that it has hitherto been considered a variety 

 of that species. 



" Var. b. With black basal band. A small speciman has the 

 following dimensions: length .8, breadth .43, length of aper- 

 ture .35 inch, weight 4 grains. 



"Var. c. Without band. I have a small specimen of the 

 brown variety of A. splendida which closely resembles this. 



" Var. d. With apex chestnut-brown, not tessellated; very 

 rare. 



' ' Var. e. W T ith irregular white spots. This variety passes 

 into A. perdix" (Gulick). 



22. P. USTULATA (Gulick). PI. 13, figs. 5, 6. 



"Shell sinistral, perforate, ovate-conic, obliquely produced at 

 the base, solid, scarcely shining, striated and microscopically 

 distinctly decussated, brown with a whitish band encircling the 

 base. Apex subacute, tessellated with white and brown; spire 

 conical, somewhat curvilinear; suture simple, lightly impressed, 

 marked with a narrow white line; whorls 6J, moderately con- 

 vex, the last large, equal to 72 hundredths of the length. Col- 

 umellar fold strong, white, oblique. Aperture very oblique, 

 sinuously oval; peristome thickened within, reflected anteriorly, 



