216 TOBNATELLIDES OF HAWAIIAN ISLANDS. 



Molokai : Mapulehu (type loc.), Kaluaaha (Cooke) ; Waia 

 lua (Thaanum), Puunea (Pilsbry & Cooke). Type no. 36243 

 Bishop Museum, cotypes no. 111847 P. A. N. S. and in Thaa- 

 num coll. 



In an immature specimen with 5y 2 whorls the embryonic 

 whorls are minutely spirally striate, the parietal lamella is 

 strong and oblique, 0.13 mm. in height. The columellar folds 

 are not as strongly developed as usual and almost equal in size. 

 The upper is 0.07 mm. in height (fig. 3). 



It is one of the most distinct species of the genus, and the 

 only one to show any color-pattern. Unfortunately an inju- 

 dicious amount of potash was used in cleaning these shells 

 and they have lost something of their original color. 



In Mapulehu all the specimens were taken on the dead 

 leaves of the Ti (Cordyline terminate). 



22. T. TDM G. & P., n. sp. PL 47, figs. 3, 5, 6. 



Shell perforate, ovate, light-corneous, thin, transparent, 

 shining, nearly smooth, under a lens minutely striate. Spire 

 convexly conic, apex subacute. Suture simple, well impressed. 

 Whorls 6%, convex, slowly increasing, compressed, the last 

 tumid, subsaccate below. Aperture rather small, ovate. Pari- 

 etal lamella of moderate size, oblique. Columella almost 

 straight, simple, with two well-developed, oblique folds, both 

 of which extend to the margin of the columella. Peristome 

 thin, convex. Umbilicus small, circular, deep. Length 3.6, 

 diam. 1.7, axis of apert. 1.2, par. lam. 0.18, umb. 0.14 mm. 



Oahu: Palehua, in the Waianae Mts. (type loc., Cooke), 

 Popowela, Makiki, Nuuanu, etc. (Spalding, Cooke). Type no. 

 14178 Bishop Museum, cotypes no. 111721 P. A. N. S. and 

 Spalding coll. 



T. idee is widely spread on Oahu but it is rather rare, 

 seldom are more than three of four specimens taken in a single 

 day's collecting. It is terrestrial and is usually found on the 

 dead leaves of the Ti (Cordyline terminalis). At first sight 

 it might be taken for a small species of Tornatellaria, but it 

 differs from that genus in being viviparous, and the embry- 

 onic whorls are not spirally striate. 



