292 FAUNA HAWAIIENSIS 



Pterodiscus Pilsbry. 

 Type, P. wesleyi Sykes. 



( I ) Pterodiscus digonophorns Ancej'. 



Paiula digonophora Ancey, Bull. Soc. Malac. France, vi. (1889), p. 171 ; Sykes, 



P. Malac. Soc. London, iii. pi. xiii. figs. 9 — 11. 

 H.-\ii. Oahu (Ancey); Waianae Mts. (Baldwin). 



(2) Pterodiscus petasus Ancey. 



Pterodiscus petasus Ancey, P. Malac. Soc. London, iii. (1899), p. 268, pi. xii. 



fig- 4- 

 H.\B. Oahu. Waianae Mts. (Ancey). 



(3) Pterodiscus zveslcyi Sykes. 



Endodonta [Pterodiscus) wcs/eyi Sy'kes, P. Malac. Soc. London, iii. (1896), p. 127. 

 Endodonta [Pterodiscus) alata Pfeiffer, Pilsbry, Man. Conch. (2) ix. p. 36, pi. w. 

 fig. 44 [nee Helix alata, Pfeiffer]. 



Wkv,. Hawaiian Islands. 



The following two species, placed in this group by Mr Pilsbry', with the habitat of 

 Hawaiian Islands, are unknown to me. They were originally described from " Islands 

 of the Central Pacific " by Pease : the first has been recorded from Tahiti, but never 

 again found there, and Mons. Ancey has suggested a Hawaiian origin ; the second has 

 been localized as from (?) Lanai. They are Helix prostrata and H. depressiformis 

 (P. Zool. Soc. London, 1864, p. 670). 



Fam. HELICIDAE. 



Papuixa von Martens. 



Papuina Mart., Die Heliceen, Ed. 2, i860, p. 166 (type Helix lituus. Lesson). 



(i) Papuina barnaclei Smith. 



Helix [Merope?) barnaclei Smith, Ann. Nat. Hist. (4) xx. p. 242. 



I am informed that careful search has been made, in the neighbourhood indicated, 

 but that no trace of the species can be found. At present, bearing in mind on the one 



' Man. Conch. (2) ix. p. 36. 



