TORNATELLIDES OF HAWAIIAN ISLANDS. 205 



Shells from Hilo and vicinity are thinner, lighter colored, 

 and smoother than typical specimens, and, besides, the em- 

 bryonic whorls are minutely spirally striate. An adult shell 

 with 5 whorls measures: length 2.5, diam. 1.4, axis of apert. 

 1.0 mm. 



Typical compacta is not present in any of the fossil earth 

 we have examined from Hamakua. 



11. T. PROCERULUS (Aiicey). PL 45, figs. 4, 5, 6. 



"Shell of the group of T. peponum" [Ancey not Gould, see 

 note below], " but more robust, oblong, thin, subpellucid, 

 corneous, obsoletely marked with fine growth-lines, openly per- 

 forate, the perforation minute but distinct. Spire long- 

 conoid, rather obtuse. Whorls 6, a little convex, regularly and 

 rather slowly increasing, the last regularly ovate, hardly an- 

 gular. Aperture oblong, sublunate, tapering above, slightly 

 oblique. Parietal wall provided with a small median lamella. 

 Columella unarmed but swollen. Peristome acute, the left 

 margin triangularly expanded. Length 3.5, diam. 2, alt. apert. 

 1.33 mm." (Ancey). 



East Maui: Kaupakalua, type loc. (Baldwin). Very com- 

 mon on all the islands except Kahoolawe. Cotypes no. 18442 

 Bishop Museum and 89843 P. A. N. S. ; lectotype no. 36246 

 Bishop Museum. 



Tornatellina procerula ANCEY, Jourii. de Conchy!., li, 1903, 

 p. 302, pi. 12, f. 13, 14; Journ. of Malac., xi, 1904, p. 69. 

 HENSHAW, t. c., p. 63. Tornatellina peponum GLD., ANCEY, 

 Bull. Soc. Malac. France, vi, 1889, p. 240; Journ. de Conchyl., 

 li, 1903, p. 301. 



1 ' T. procerula is larger than peponum, of more robust form, 

 but similar in other characters. In the young stage T. pe- 

 ponum has an acute columellar denticle which disappears 

 with age. This peculiarity I have not noticed in T. procerula' 9 

 (Ancey) . 



T. procerulus with T. macromphala and Tornatellina ob- 

 longa are the commonest species of Tornatellimdce found on 

 the Hawaiian Islands. These three species are abundant from 

 near the seacoast, in favorable localities, to about 2,500 ft. ele- 



