6 PRONESOPUPA. 



Molokai: Pelekunu (Forbes), Mapulehu, Kalamaula 

 (Cooke). 



West Maui: Waikapu, Honokahau (Forbes), lao, Waihee 

 (Cooke). East Maui: Kaupakalua, Keanae (Baldwin), Kai- 

 lua, Alalele (Cooke). 



Hawaii: District of Hilo (Forbes, Thaanum) ; Reed's 

 Island, four miles Olaa Eoad, Rainbow Falls (Cooke), Mau- 

 lua Gulch (Thaanum). District of Puna (Thurston and 

 Thaanum), Kaueleau, Keaau, Pahoa (Thurston), Olaa (Ly- 

 man and Cooke). District of South Kona: Hookena (A. 

 Gouveia), Honomalino (Thurston), Kapua (Forbes). Dis- 

 trict of North Kona: Holualoa, Waiaha and Hienaloli (A. 

 Gouveia). District of Hamakua; Keehia (Thaanum), Wai- 

 pio (Baldwin), Fossil Mana (Thaanum). "Central" Hawaii 

 (Forbes). 



Lectotype 12509, Cotypes 18695, Bishop Museum. 



Pupa acanthinula ANCEY, Mem. Soc. Zool. de France, v, 

 1892, p. 709. 



P. acanthinula appears to be widely distributed on all the 

 islands except Kauai and Lanai. No specimens have, as yet, 

 been reported from these two islands. Except for the shells 

 collected by Mr. Forbes from "Central Hawaii", all of the 

 specimens here examined came from elevations of less than 

 1,000 ft. The species is usually found on the trunks of trees, 

 or the leaves of low shrubs or plants. Very few specimens 

 have been found on the ground, or on dead leaves or stones. 



Ancey 's type material consists of eight individuals, of 

 which six are in good condition. One of these has been 

 chosen to represent the species. This specimen measures: 

 length 1.7, diam. 1.55, aperture, oblique alt. 0.93 mm. The 

 differences between these measurements and those given by 

 Ancey are probably due to the method of taking them. In 

 none of Ancey 's type material, though carefully measured, is 

 the diameter equal to the length. The smallest adult of 

 Ancey 's type material measures: length 1.6, diam. 1.32, aper- 

 ture 0.98 mm. In none of the specimens is there any indica- 

 tion of parietal or angular lamellae. Acanthinula is most 

 easily recognized by its rather widely spaced riblets, 20-25 



