PUPOIDOPSIS. 107 



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

 toothless like the adult stage. 



PUPOIDOPSIS HAWAIENSIS Pils. & Cooke, n. sp. PI. 17, fig. 2. 



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

 vinaceous-cinnamon. to pinkish-buff or white (the specimens 

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

 The whorls are conspicuously inflated and increase rather 

 rapidly, the first and especially the second being unusually 

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

 ture, 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 

 of the whorl; the margins converge and are connected by a 

 very thin parietal callus; outer and basal margins are very 

 slightly expanded, somewhat thickened within ; columella 

 concave, the columellar margin dilated. 



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



Length 3.57, diam. 2.15, aperture 1.4 mm. ; 4y 2 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.) ; 

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

 deposit, and on the calcareous sandstone bluff l 1 /^ miles west 

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

 main range on the coral plain below Ewa mill and Waimaualo 

 (Cooke). 



Molokai: Mauna Loa, northern slope, where the shifting 

 sands cross, and Kaiehu, west of and near Moomorni (Cooke) ; 

 Moomomi (Cooke and Pilsbry). 



WestMaui: Waihee (Cooke). 



Some of the best-preserved shells are translucent enough to 

 show the axis faintly through the last whorl. 



It has been found only in Holoceue and perhaps Pleistocene 

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

 Pupillidae, Tornatellinida?, Amastridae, Helicinidae and others. 

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



