ELASMIAS. 115 



Distribution of Elasmias. 



Hawaiian Islands : 1, E. fuscum. 2, E. luakahaense. 3, E. 

 anceyanum. 



Polynesia: 4, E. ovatum. 4a, E. o. apertum. 5, E. pease- 

 anum. 



Australia, New Guinea: 6, E. wakefieldic? (T. eucharis, T. 

 terrestris). 



New Caledonia : 7, E. mariei. 



Philippines, East Indies, Maldive Is. : 8, E. manilense. 9, 

 E. citreum. 10. E. sundanum. 



Mauritius, Bourbon : 11, E. cernicum. 



Caroline Is. : 12, E. ovatulum. 



Marianne Is. : 13, E. quadrasi. 



Islands of Izu, Japan : 14, E. kitaiwojimanum. 



Hawaiian Species, 

 a. Parietal lamella strongly developed in adults ; columellar 



plate broad. 



b. Shell not transparent, brownish. E. fuscum, no. 1. 

 bb. Shell thin, transparent, corneous. 



E. luakahaense, no. 2. 

 aa. Parietal lamella low ; columellar plate narrow. 



E. anceyanum, no. 3. 



1. E. FUSCUM (Ancey). PI. 29, figs. 1 to 6. 



Shell broadly ovate-conoidal, imperforate, moderately thin 

 but somewhat solid, tawny corneous, faintly marked with 

 growth-striae. Spire conic, obtuse, short, less than one-half 

 the length of the shell. Whorls 4^, convex, suture not deep, 

 the last large, ovate. Aperture ample, irregularly ovate, 

 tapering above, distinctly oblique. Parietal lamella white, 

 large, compressed, quite prominent but short, soon disappear- 

 ing. Columellar process callous and flat, equal in size to that 

 of T. aperta, with the callus slightly twisted above, obliquely 

 truncate below. Length 3.25, diam. 2.2, length of aperture 

 1.75 mm. (Ancey). 



Hawaii: Olaa, Puna (type loc., Thaanum), Kona (Hen- 

 shaw), Crest of Kilauea (B. Sharp). Maui: Kaupakalua 



