238 TORNATP:LLIDKS OF HAWAIIAN ISLANDS. 



In the metaneanic substage there are two high coluinellar 

 lamellae, the lower one somewhat the stronger and a somewhat 

 diffuse entering callous ridge, lower palatal in position, much 

 as in some young Auriculellas. The coluinellar lamella? per- 

 sist in the paraueanic substage, but the palatal ridge gradu- 

 ally disappears (fig. 4). 



Oahu : Western ridge of Popouwela, Waianae Mountains, 

 in the "Endodonta locality'' (Spaldiug, Cooke & Pilsbry). 

 Types no. 108894 A. N. S. P., cotypes in B. P. B. Mus. 



This species, like nearly all the Popouwela forms, was taken 

 in abundance. The last whorl is less shortened and less ab- 

 ruptly terminated below than in any form of T. perkinsi. The 

 color is darker, and the parietal lamella larger. The palatal 

 callus of the young shell is a remarkable feature. 



Ordinarily one cannot see distinct coluinellar lamella? within 

 the aperture of adults, in oblique view ; but one specimen of 

 full size and appearing to be adult (pi. 51, fig. 7) shows them 

 well developed far within, though not visible in a direct, 

 front view. Possibly we have to do with another species, but 

 it may be a case of individual retention of a feature of im- 

 maturity. 



43. T. BRUNNEUS C. & P., n. sp. PL 51, figs. 5, 6. 



Shell perforate, narrowly ovately-turrited, reddish-brown, 

 embryonic whorls corneous, somewhat glossy, nearly smooth, 

 under a lens minutely striated, quite thin, subdiaphanous. 

 Spire turrited, apex somewhat acute. Suture simple, im- 

 pressed. Whorls 6, convex, slowly and regularly increasing, 

 the last rotund, with somewhat saccate base. Aperture 

 broadly ovate. Parietal lamella well developed, slightly ob- 

 lique. Columella tumid above, furnished with a single minute, 

 almost transverse fold just below the parietal wall. Peristonie 

 simple, erect, outer margin convex. Umbilicus minute, oval. 

 Length 2.45, diam. 1.3, axis of apert. 0.95, par. lam. 0.14, umb. 

 0.3 mm. 



Oahu: Nuuanu near the Pali, on the leaves of a grass 

 (Agrostis variabilis). Type no. 36266 Bishop Museum, co- 

 types no. 111715 P. A. N. S. 



