HAWAIIAN XESOPUPAK. 289 



or nearly obsolete. Angular and parietal lamellae about as 

 long as in the typical form, nearly straight, the parietal emerg- 

 ing further than typical. 



Length 1.6, diam. 1 mm. 



Length 1.48, diam. 0.95 mm. 



Widely distributed on the wooded part of Molokai, the typa 

 from upper Kaunakakai, along the pipe-line trail. It occurs 

 as far west as Puunea, north of Meyer's lake. 



56. Nesopnpa baldirini Itiiniiriisix P. & C., 11. subsp. PI. 27, 

 figs. 13, 14, If). 



The surface has weak ribs, or largely obsolete, last whorl 

 with both sulci deep, surface strongly convex between them; 

 base swollen. Angular and parietal lamellae somewhat longer 

 than in typical baldwini. Columellar lamella, with the inner 

 knob somewhat turned down. 



Length 1.5, diam. 0.9 mm. ; 5V> whorls. 



Lanai. 



Section I)ifra>iesopi<j><t <!. & P., new section. 



The shells are minute, dextral (except for N. infrequens) ; 

 migle lamella short, not reaching the margin of the aperture, 

 parallel to the parietal; upper palatal plica much shorter than 

 the lower, neither of which is accompanied by a sulcus on the 

 back of the last whorl ; with a slight swelling just back of and 

 parallel to the margin of the aperture; columellar lamella 

 obliquely seated, not descending, when viewed from above 

 slightly sigmoid. Type N. limatida. 



They are usually found on the fronds of ferns or leaves of 

 low plants, but occasionally on the trunks of trees. 



Key to Species of Section In-franesopupa. 



m\ Shell sinistral. N. infrequent, no. 12. 



<r. Shell dextral. 



ft 1 . Adult shells nearly 2.1 mm. in length. 



c 1 . Surface, between stria?, covered with minute 

 anastomosing wrinkles. Maui. 



N. bishopi, no. 10. 



