PRONESOPUPA. 11 



surface structure slightly more closely punctate than those of 

 the typical form. 



Section Edentulopupa new section. 



Pronesopupse of 4-4% whorls, with rather close costae (35- 

 40 on the last whorl) ; embryonic whorls, granulose, minutely 

 spirally striate; costce with faint narrow membranous mar- 

 gins. Aperture edentulous. Reproduction ovoviviparous. 

 Type P. admodesta. 



Distribution: nearly all of the Hawaiian Islands. Speci- 

 mens have been found from a few hundred feet elevation to 

 nearly 4,000 ft. Most of the specimens were taken on the 

 bark of trees, a few on a stone wall and dead leaves on the 

 ground. 



7. PRONESOPUPA ADMODESTA (Migh.). PI. 1, fig. 13. 



''Shell minute, ovate, greenish brown; whorls 3%, convex; 

 incremental stria? very fine; aperture circular, unarmed; lip 

 simple, thin, slightly reflected ; umbilicus small. Length 1/20 

 [1.25 mm.], diam. 1/40 [0.62 mm.] inch. Oahu" (Migkels). 



Oahu : Nuuanu; Luakaha on stone wall, Glen Ada (Cooke) ; 

 Tantalus, near edge of crater, on the bark of lehua and koa 

 trees (Cooke) ; Waianae Mts. Palehua on dead ieie leaves 

 (Cooke); northeast ridge of Kaala (Bridwell). Kauai: 

 Kaholuamanu (Forbes, one specimen). Molokai: Puukole- 

 kole (Cooke & Pilsbry) (Cooke) ; Kalihi (Cooke, one speci- 

 men). Hawaii: Hilo (Ancey collection, one specimen). 



Pupa admodesta MIGHELS, Proc. Bost. Soc. Nat. Hist., ii, 

 Jan. 1845, p. 19. PFR., Monographia Hel. Viv., ii, p. 302. 

 ANCEY, Mem. Soc. Zool. France, v, 1892, p. 708. Not Pupa 

 admodesta BOETTGER, in von Martens' Conch. Mittheil., i, 

 1880, p. 58, pi. 12, f. 15 (= P. boettgeri). 



Of the numerous forms of Pronesopupa found on Oahu, we 

 have selected as typical of admodesta the specimens from 

 Luakaha, Nuuanu. 



The shell is narrowly umbilicate (umbilicus cleft-like), 

 brownish with a greenish tinge, ovate, costulate, with low, 

 sharp, close, thread-like membranous costae. Spire with con- 



