HAWAIIAN NESOPUPAE. 285 



sulci corresponding to the palatal plicae ; the lower sulcus is 

 strongly arched, shallow, broad, terminating at a little distance 

 back of the aperture, the upper longer, shallower, not as 

 strongly curved, extending nearly to the peristome. Aperture 

 truncate-ovate, scarcely oblique, its outer margin slightly 

 sinuous, lip insertions converging somewhat, sometimes united 

 by a thin callus, thickened at and near the lip insertion. 

 Angular lamella long, high, of nearly uniform height, nearly 

 parallel to the parietal, extending to the margin of the outer 

 lip ; parietal lamella more deeply seated, strong, long and 

 somewhat oblique. Columellar lamella strong, deeply seated, 

 at first transverse to the columella, then abruptly turned down- 

 wards almost at a right angle and extending to the base of 

 the columella. Upper palatal fold strong, long, with a slight 

 depression back of its outer end, its margin nearly touching 

 that of the angular lamella; extending nearly to the margin 

 of the peristome. The lower palatal fold is deeply immersed, 

 long, strong within, tapering gradually to its anterior end. 

 Peristome with the outer and basal margins uniformly thick- 

 ened within, the columellar margin narrowly, triangularly 

 arched above the umbilicus. 



Length 1.53, diam. 0.86, greatest length of apert. 0.5 mm. 



Oahu: Makua, type loc. (Forbes & Cooke), and Lualualei 

 (Cooke), in the Waianae Mts. ; Kailua (Pilsbry, Cooke), 

 Waimanalo, Rocky Hill, Manoa, Kahala, Malaekahana, Kahuku 

 and Kawailoa (Cooke) in the Koolau Mts. 



Molokai : Kalaeokailio Pt., Mauna Loa, Shifting Sands and 

 Moomomi (Cooke & Pilsbry). 



Lanai : Mahana Gulch a single living specimen, and Western 

 End (Forbes). 



Kahoolawe: Kanapou, (Stokes, Forbes) and Schooner Bay 

 (Pilsbry and Cooke). 



East Maui: Kanaio and Auwahi (Fleming). 



Hawaii: Puuwaawaa (Thurston), Kona (Thwing, Gouveia), 

 Huehue, Kapulehu and Waiaha (Gouveia). All specimens 

 fossil from more or less recent beds, except the single fresh 

 specimen from Mahana Gulch, Lanai. Type 11066 Bishop 

 Museum, para types 42942 Bishop Museum and 44707 A. N. S. P. 



