TORNATELLIDES OF HAWAIIAN ISLANDS. 211 



Of the Hawaiian species of Tomatettides, T. bryani is most 

 closely related to T. kahoolavensis. It differs from the latter 

 by its smaller size, straighter arid more conical outlines of the 

 spire, stronger parietal lamella, etc. This species was taken 

 with Tornatellina graeilis, but was not nearly so abundant as 

 that species. 



16. T. KAHOOLAVENSIS C. & P., n. sp. PI. 46, figs. 3, 4, 7. 



Shell perforate, cylindrical!; turrited, in fossil state white, 

 glossy, under a strong lens minutely striate, thin, translu- 

 cent. Spire elongate, subcylindrical, with slightly convex out- 

 lines ; apex subacute. Suture well impressed, indistinctly mar- 

 gined. Whorls 6, the embryonic increasing rapidly, smooth, 

 the rest increasing very slowly and regularly, convex, the last 

 cylindrical, rounded below, slightly flattened about the um- 

 bilicus. Aperture rather long, ovate, with a regularly curved 

 outer margin. Parietal lamella low, erect. Columella nar- 

 rowly triangular, unarmed. Peristome thin, erect. Umbili- 

 cus rather small, pyriform. Length 3.2, diam. 1.55, axis of 

 apert. 1.1, par. lam. 0.05, umb. 0.29 mm. 



Kahoolawe : Hakioawa (type loc., Pilsbry, Cooke), Hana- 

 kaea (Pilsbry), Ahupuiki and Kanapou (Forbes and Stokes). 

 Type no. 36249 Bishop Museum, cotypes no. 111724 P. A. 

 N. S. 



An immature specimen, with nearly 5 whorls, has the apical 

 whorls smooth, without a trace of spiral lines. The parietal 

 lamella is low, erect, about 0.09 mm. in height. The columella 

 is furnished with two low oblique folds, the upper of which 

 is hardly visible (fig. 3). 



This is the most abundant species of Tornatellides found 

 on the island. It was present in all the fossil deposits. The 

 only other species of this genus found there is referable to T. 

 macromphala Anc. Tornatellina gracilis is also very abun- 

 dant, and Tornatellina baldwini rather rare. 



T. kahoolavensis undoubtedly belongs to the procerulus 

 group. The upper columellar fold is a little more strongly 

 developed than in most of the species. In size and form it 

 approaches T. irregularis of West Maui. Probably T. con- 



