TOBNATELLIDES OF HAWAIIAN ISLANDS. 207 



lighter colored than the typical form and the parietal lamella 

 is merely indicated by a faintly raised line. A form of pro- 

 cerulus is found on the crest of Kilauea. 



In the Ancey collection is a series from Kaupakalua, East 

 Maui, with the MS. name T. peponum var. majuscula. These 

 are rather large fully adult specimens of procenda. One of 

 the specimens with slightly more than 6 whorls measures: 

 length 3.7, diam. 1.9, axis of apert. 1.5, par. lam. 0.13 mm. 



Embryonic shells from an Oahuan form have the first 

 whorl indistinctly spirally striate, the second whorl is faintly 

 transversely striate. The shells are minutely perforate. The 

 parietal lamella is low and the columella is unarmed. 



lla. T. procerulus puukolekolensis P. & C., n. subsp. PI. 45, 

 figs. 7, 8. 



More compact in form than T. procerulus, with the umbil- 

 icus very much larger. Length 3, diam. 1.8 mm., with 5% 

 whorls. 



Molokai : in the bottom of a small ravine east of Puu Kole- 

 kole (Pilsbry & Cooke). Cotypes no. 108669 A. N. S. P. and 

 33669 B. P. B. Mus. 



116. T. procerulus kailucmus P. & C., n. subsp. PL 45, fig. 9. 



The shell resembles T. p. puukolekolensis by the umbilicus, 

 which is much larger than in T. procerulus. It differs from 

 the Molokaian form by the thicker, more obtuse spire. The 

 parietal lamella is quite low and nearly a half-whorl long. 

 Length 2.9, diam. 1.7 mm. 



Oahu : Kaelepulu, Kailua, in ledges and around the base of 

 a low coral bluff (Pilsbry). 



The umbilicus is much larger than in T. kahoolavensis. 



12. T. KAMALOENSIS P. & C., n. sp. PL 45, figs. 10, 11. 



The shell is perforate, oblong-conic, pale brown; spire 

 straightly conic. Whorls 5i/, convex. Aperture ovate, the 

 columellar margin well reflexed, columella slightly convex. 

 Parietal lamella nearly a half-whorl long, moderately high. 

 Umbilicus minute. Length 2.8, diam. 1.5, length of aperture 

 1 mm. 



