TORNATELLIDES OF HAWAIIAN ISLANDS. 245 



East Maui: Kaupakalua (Baldwin), Haua (Forbes), Kai- 

 ula (Cooke). West Maui: Waikapu (Forbes), Maunahooma 

 (Cooke). Molokai: Kaluaaha (Thaanum), Maunahui, Mapu- 

 lelm (Cooke). Lanai (Forbes). Hawaii: Keehia (Thaa- 

 num) . Type no. 18450 Bishop Museum. 



Tornatellina- terebra ANCEY, Journ. de ConchyL, li, 1903, p. 

 303, pi. 12, f. 17, 18. 



"I at one time referred this remarkable species to T. per- 

 kinsi Sykes, discovered by Mr. Perkins on the island of Kauai, 

 which it resembles in the very much lengthened shape. Mr. 

 Sykes, to whom I sent an example of T. terebra, has pointed 

 out to me that the two species are different. T. terebra has a 

 very curious peculiarity: the parietal lamella has the shape 

 of a saw, of which the very acute and spiniform teeth are di- 

 rected forward and are very regular and remarkably strong 

 for so small a shell. The columella of immature individuals 

 is provided with two folds which become very indistinctly ap- 

 parent in the adult. The spire seems to be more acute than in 

 T. perkinsi, and the whorls are even closer, while the size is 

 smaller. This species appears to be constant in these charac- 

 ters. It is not common" (Ancey). 



None of the specimens which we have seen from East Maui 

 has over iy 2 whorls. A specimen from Maunahooma, West 

 Maui, has just 8 whorls and measures : length 2.95, diam. 1.1, 

 axis of apert. 0.75, par. lam. 0.09 mm. In this specimen the 

 columella is unarmed. A specimen from Lanai has 8^ whorls 

 and measures : length 3.3, diam. 1.1, axis of apert. 0.73, par. 

 lam. 0.11, umb. 0.12 mm. Both columellar folds are present, 

 the upper being slightly stronger than the lower. A speci- 

 men (pi. 52, fig. 1) from Kaluaaha, Molokai, has 8 l / 2 

 whorls and measures : length 3.5, diam. 1.2, axis of apert. 0.8, 

 par. lam. 0.12, umb. 0.12 mm. The apical whorls are lighter- 

 colored than the rest of the shell and smooth. The suture is 

 indistinctly margined, minutely and almost regularly crenu- 

 late. The surface of the shell is minutely striate. The colu- 

 mellar folds are minute, and the parietal lamella is incised to 

 about one-half its height. 



An immature specimen (pi. 52. fig. 2) from Mapulehu, 



