254 LYROPUPA. 



The last whorl is impressed by a moderately deep and wide 

 sulcus parallel with the suture, the base being narrowly 

 rounded and prominent. The aperture is rounded below, 

 truncate above, the sinulus not very well denned. The angu- 

 lar lamella is short and very low. The parietal lamella is 

 median, oblique, deeply placed, its deeply penetrating inner 

 part stronger. The columellar lamella, rather deep within, 

 appears as a plate with arcuate outline ; the upper end recedes, 

 the plate standing obliquely. The upper palatal fold is low, 

 slender, and does not penetrate far. Lower palatal is more 

 deeply placed, very strong, somewhat curved, and penetrates 

 to the back. There is a strong but short, obliquely axial basal 

 fold. The peristome is whitish, somewhat thickened and well 

 expanded, continuous. 



Length 2.25, diam. 1.4, aperture 0.72 mm. ; 5% whorls. 



Hawaii: Olaa (Thaanum). Type 11050 Bishop Museum; 

 paratypes 18769 Bishop Museum, 119469 A. N. S. P. and 838 

 Thaanum Coll. 



Lyropupa lyrata (Gld.) ANCEY, Proc. Malac. Soc. London, 

 vi, 1904, p. 124; not Pupa lyrata Gould. 



This species is based on specimens believed by Mr. Ancey 

 to be Gould's Pupa lyrata. It is well distinguished from 

 allied forms by the very convex whorls, the unusually strong 

 lower palatal fold and the short, high, deeply placed basal 

 fold, stronger than in any related form. It is not nearly re- 

 lated to L. lyrata, which differs by the well-developed angular 

 lamella and the spiral striation. 



L. anceyana stands close to L. hawaiensis, but it is smaller 

 with the ribs more widely spaced, the spire more tapering, and 

 the whorls are conspicuously more convex. 



14. LYROPUPA SCABRA P. & C., n. sp. PI. 26, figs. 1, 2. 



The shell is perforate and rimate, tapers above, last two 

 whorls forming a short, cylindric portion; russet with sculp- 

 ture of well-spaced ribs, about 16 on the last whorl. Last two- 

 thirds of the last whorl has a deep and wide sulcus. The 

 aperture is dark within with pale brown peristome and teeth. 

 Angular lamella short, rather low. Parietal strong. Colu- 



