228 TORNATELL1DES OF HAWAIIAN ISLANDS. 



Whorls 6 to 614, slowly and regularly increasing, a trifle eon- 

 vex, parted by a simple suture, the last whorl short, dilated, 

 saccate, hardly angular. Aperture short, small, nearly ver- 

 tical, obliquely truncate above; furnished with a small or 

 moderately small parietal lamella. Columella tumid, bearing 

 two spiral lamellae (visible in the young stage, but in adults 

 more or less obsolete, especially the lower one which is some- 

 times almost entirely absent). Peristome simple, the colu- 

 mellar margin dilated, expanded. Length 2.75, diam. 1.75, 

 alt. apert. 1 mm.'' (Ancey). 



East Maui: Kaupakalua (type loc.) and Keanae. Oaliu: 

 Tantalus (Baldwin). Molokai and Kahoolawe (Cooke & Pils- 

 bry). All islands except Niihau. Cotypes no. 18439 Bishop 

 Museum, topotypes no. 111834 P. A. N. S. 



Tornatellina macromphala ANC., Journ. de Conchyl., li, 

 1903, p. 296, pi. 12, f. 3, 4. HENSHAW and ANCEY, Journ. of 

 Malacology, xi, 1904, pp. 63, 70. 



' ' This species is remarkable, when completely developed, for 

 the swollen base and the amplitude of the umbilicus. Young 

 shells are more narrowly perforate and have readily visible 

 though small columellar lamella?, which are feeble or nearly 

 disappear in the adult' 1 (Ancey}. 



The shells from the different islands are remarkably alike 

 and the species is very common and generally distributed. 

 Ancey 's specimens from Keana?, East Maui, do not seem to 

 have passed into the collection of the Bishop Museum, al- 

 though there are other species of Tornatellides from this 

 locality. The type specimen of this species was not isolated 

 by Ancey in his collection, in which there is but a single lot of 

 six specimens labeled in his handwriting. This lot is un- 

 doubtedly the type lot, and is from Kaupakalua, East Maui. 

 There are, besides this type lot, eighteen other lots of this 

 species from Maui in the Ancey collection, none of which were 

 labeled, except as to locality. 



Most of the specimens of the type series are larger than the 

 measurements given in the description. The specimen which 

 best fits the description has 6^ whorls and measures : length 

 2.9, diam. 1.6, <ixis of apert. 1, par. him. 0.09. umb. 0.5 mm. 



