PUPOIDOPSIS. 



107 



rould cause it to be looked for here. Young specimens are 

 >thless like the adult stage. 



'UPOIDOPSIS HAWAIENSIS Pils. & Cooke, n. sp. PL 17, fig. 2. 



The shell is umbilicate and rimate, conic-turrited, thin, 

 dnaceous-cinnamon to pinkish-buff or white (the specimens 

 ;ing fossil, and more or less faded) ; very weakly striate. 

 'he whorls are conspicuously inflated and increase rather 

 ipidly, the first and especially the second being unusually 

 irge ; the last whorl ascends slightly and slowly to the aper- 

 ire, and is rounded around the somewhat funnel-shaped 

 umbilicus. The aperture is somewhat oblique, ovate, without 

 teeth, its length contained 2.4 to 2.8 times in that of the shell. 

 The peristome is built forward nearly to the ventral convexity 

 >f the whorl; the margins converge and are connected by a 

 rery thin parietal callus; outer and basal margins are very 

 lightly expanded, somewhat thickened within; columella 

 mcave, the columellar margin dilated. 

 Length 3.83, diam. 2.28, aperture 1.55 mm. ; 4^/ 2 whorls. 

 Length 3.57, diam. 2.15, aperture 1.4 mm. ; 4% whorls. 

 Length 3.4, diam. 2.05, aperture 1.22 mm. ; 4% whorls. 

 Oahu: Kaelepulu, Kailua, on a low rock shelf, abundant 

 (Pilsbry; type 129782 A. N. S. P., cotype in Bishop Mus.) ; 

 de, west of stream, between the road and the sea, in a dune 

 ieposit, and on the calcareous sandstone bluff 1% miles west 

 >f Kahuku (Cooke and Pilsbry). On the kona side of the 

 tain range on the coral plain below Ewa mill and Waimanalo 

 ; Cooke). 



Molokai: Mauiia Loa, northern slope, where the shifting 

 ids cross, and Kaiehu, west of and near Moomomi (Cooke) ; 

 [oomomi (Cooke and Pilsbry). 

 West Maui: Waihee (Cooke). 



Some of the best-preserved shells are translucent enough to 

 LOW the axis faintly through the last whorl. 

 It has been found only in Holocene and perhaps Pleistocene 

 leposits, which also contain a multitude of other land shells, 

 'upillidae, Tornatellinidae, Amastridae, Helicinidse and others. 

 Most of these deposits are from near sea level to a few hun- 



