250 LYROPUPA. 



leaves and debris in the woods on the western ridge of Popou- 

 wela, with Endodonta and other small shells. 



In the type specimen there are 6% whorls, the embryonic 

 whorls are wrinkled-granulose. The last whorl has 22 slightly 

 oblique, slightly flexuous ribs. The angular lamella is short, 

 low, blunt ; the parietal is deeply seated, curved, its edge bent 

 outwards, hardly emerging further than the inner termination 

 of the angular; the columellar is strong, deeply and axially 

 seated on the columella, nodule-like viewed from the back. 

 The lower palatal fold is short and rather high. Some dis- 

 tance beyond it there is a strong, oblique, white tubercle below 

 the inner end of the upper palatal plica. A very weak basal 

 appears below it (fig. 6). The type specimen, according 

 to my method of measuring, has the following dimensions: 

 length 2.38, diam. 1.22, apert. (vert.) 0.75 mm. The speci- 

 mens figured are from Popouwela. Figure 5 measures : length 

 2.3, diam. 1.28, apert, (vert.) 0.75 mm. 6 whorls. 



10. LYROPUPA ANTIQUA C. & P., n. sp. PL 21, figs. 8, 9, 11. 



The shell is oblong, somewhat cylindric, slowly tapering to 

 the apex, the whorls rather narrow and convex; sculpture of 

 strong, somewhat oblique ribs, 15 to 17 on the last whorl. 

 The last whorl has a broad and deep spiral concavity somewhat 

 below the middle. Armature of the aperture is outwardly as 

 in L. mirabilis, the angular lamella low and short, the parietal 

 deeply placed, becoming strong deep within, flaring towards 

 the upper palatal. The columellar lamella is rather massive. 

 The upper palatal fold is relatively rather short. Lower 

 palatal very deeply placed, low in front, where it is parallel 

 with the upper, then stronger and turning downward, pene- 

 trating well beyond the upper palatal (pi. 21, fig. 8). 



Length 2.8, diam. 1.4, aperture 0.8 mm. ; 6% whorls. 



Oahu : Manoa, in pleistocene deposits along the Upper Manoa 

 Road (Thaanum, Cooke). Type 11047, Bishop Museum; para- 

 types 45280, Bishop Museum and 119472 A. N. S. P. 



This species is easily separated from L. mirabilis by its 

 larger size, more numerous whorls and fewer ribs on the last 

 whorl. Internally it differs by the continuous, strongly bent 

 lower palatal fold. 



