TORNATELLIDES OF HAWAIIAN ISLANDS. 213 



lower columellar fold is deeply seated, 0.09 mm. in height ami 

 there is a slight swelling on the upper part of the columella, 

 but no distinct upper fold. The embryonic whorls are smooth 

 and there is no indication of spiral striae. 



18. T. SUBANGULATUS (Ancey). PI. 46, figs. 9, 10. 



"Shell oblong-conic, thin, rather shining, pale-corneous, 

 pellucid, having inconspicuous growth-lines; openly umbili- 

 cate, the umbilicus cylindric, not very wide. Spire regularly 

 conic, the apex rather small, somewhat obtuse. Whorls 6, a 

 little convex, suture linear, the last whorl oblong, tapering 

 and obscurely roundly-compressed, at the base, at the begin- 

 ning more or less subangular. Aperture suboblique, narrowed 

 at both ends, the parietal Avail bearing a moderate spiral la- 

 mella. Columella somewhat swollen, unarmed, broadly di- 

 lated. Length 3, diam. 1.75, alt. apert. 1.33 mm." (Ancey). 



East Maui: Kaupakalua (Baldwin), Kula (Cooke). Type 

 no. 18449 Bishop Museum, paratypes no. 18608 Bishop Mu- 

 seum and no. 111846 P. A. N. S. 



Tornatdliua xiibangulatu ANCEY, Journ. de Conchyl.. li, 

 3903, p. 303, pi. 12, f. 15, 16. 



'It differs from T. pcponum [ Ancey 's pepo-nmn equals 

 procenda] by the very regularly conic though quite long spire, 

 the usually distinct angulation at the beginning of the last 

 whorl, its tapering base, which narrows the aperture in this 

 part, making it more or less angular; finally its umbilicus is 

 well open and cylindric, though not reaching the size of that 

 of T. macromphala, and is covered in a front view of the shell 

 by a wide dilation of the columella. This is more or less 

 swollen but constantly unarmed, even in the young stage" 

 (Ancey). 



A specimen from the Ancey coll. (no. 18608 Bishop Mu- 

 seum) with 614 whorls measures: length 3.3, diam. 1.75, axis 

 of apert. 1.3, par. lam. 0.13, umb. 0.63 mm. This species ap- 

 pears to be very variable in the development of the columellar 

 fold of immature specimens. 



Very rarely the columellar fold is absent as stated by An- 

 coy. Usually only the lower columellar fold is present, the 



