244 LYROPUPA. 



(figs. 9, 10). There is a very small and very deeply placed 

 basal fold, at least in some specimens. Peristome very slightly 

 expanded. 



Length 3, diam. 1.62, apert. 1.1 mm. 



Length 2.7, diam. 1.6 mm. 



Hawaii : In pleistocene deposits at Mana and Palihoukapapa 

 (Henshaw, Thaanum). Type 18746 Bishop Museum; para- 

 types 18756 Bishop Museum, 119453 A. N. S. P., also in 

 Henshaw and Thaanum colls. 



Lyropupa magdalenae var. prisca ANCEY, Journal of Mala- 

 cology, London, xi, 1904, p. 68, pi. 5, f. 19. ? Pupa lyrata 

 Gould, BOETTGER in v. Marts., Conchol. Mittheil., i, 1881, p. 

 61, pi. 12, f. 17 (Auf der Iiisel Hawaii). 



The above description is not drawn from Ancey 's type speci- 

 men but from another from Mana, as the former is not in per- 

 fect condition. Ancey gave Palihoukapapa as the type local- 

 ity but as this species is extremely rare in the deposits and 

 common in those from Mana, I am of the opinion that the 

 former locality is an error. Two nearly equal lots of earth 

 from each locality were picked over and the Mana lot contained 

 nearly 200 specimens of prisca to 1 from Palihoukapapa. From 

 the number of specimens of prisca in the Ancey collection I 

 have no doubt but that his came from the Mana deposit. 



L. prisca is in no way closely related to L. magdalence, the 

 surface sculpture of the embryonic whorls is enough to separ- 

 ate the two as species. It differs from the other species from 

 Hawaii in having close, fine, spiral striae in the interstices be- 

 tween the costa? in the most perfectly preserved examples; 

 these stria? are almost or entirely absent in most the specimens 

 examined, due to the fossil condition of the shells. Ancey 's 

 measurements in the Journal of Malacology are somewhat con- 

 fusing; his type measures, length 2.8, diam. 1.5 mm. 



Dr. Boettger's description and figure of what he identified as 

 Pupa lyrata appears to have been based upon recent specimens 

 of this or some very closely related Lyropupa. He placed 

 V. striatula Pease in the synonymy of lyrata, but without hav- 

 ing any knowledge of it other than the original description. 



L. thaanumi of Maui is very near akin to prisca; but the 



