LYROPUPA. 



253 



Length 2.05, diam. 1.15, aperture 0.75 mm. (type). 



Length 2.1, diam. 1.33, aperture 0.75 mm. 



Length 2.2, diam. 1.2, aperture 0.8 mm. 



Molokai: Kalihi, type loc. (Pilsbry & Cooke), Kalamaula 

 (Thaanum), Kawela. (Cooke), also fossil at Kaluaaha, Kalau- 

 papa and Kaiehu (Cooke); Lanai: Mahana and Kaiholena 

 (Forbes). Type 33627 Bishop Museum (fig. 6) ; para type 

 108919 A. N. S. P. (figs. 7, 10, 11). 



L. sparna differs from L. mirabilis by the palatal armature. 

 It resembles L. antique, in this respect, but the shell is smaller 

 and the ribs thinner and more numerous. L. hawaiiensis is 

 a larger, more robust shell, with less triangular aperture and 

 a stronger basal fold, but closely related. It occurred along 

 the pipe-line trail in some abundance among dead leaves. 



As far as known, only two specimens have been collected on 

 Lanai, one from each of the localities mentioned above. These 

 two specimens agree very closely with those from Molokai. 

 One of them measures, length 2.1, diam. 1.25 mm., 5% whorls. 



12a. L. sparna simdifera P. & C. PL 22, fig. 13. 



The angular lamella is developed as a distinct though small 

 plate, and the upper palatal fold is somewhat stronger than 

 in sparna>, the sinulus being therefore better defined. The 

 lower palatal fold is strong and deeply placed, more than 

 half of its length beyond the inner end of the upper palatal. 



Length 2.2, diam. 1.1 mm. 



Molokai : Western ravine of Kamalo ; also in small numbers 

 along the pipe-line trail with L. sparna (Cooke & Pilsbry). 



13. LYROPUPA ANCEYANA C. & P., n. sp. PL 26, figs. 3, 6. 



The shell is sinistral, ovate, chestnut-brown, scarcely shin- 

 ing. Sculpture of strong, rather narrow, equidistant, oblique 

 ribs, slightly flexuous on the last whorl, where they are often 

 more prominent above the middle, and number 12 to 14; 

 minute striae of growth may be seen between the ribs, but 

 no spiral strise. The first 1% whorls are microscopically 

 granulose. The spire is oblong-tapering, the summit obtuse. 

 The whorls are very convex, the suture deep and undulating. 



