MOLLUSCA 357 
(2) Leptachatina acuminata Gould. 
Achatinella acuminata Gould, P. Boston Soc. 1. (1847), p. 200; U. S. Explor. 
Exped. Mollusca, pl. vi. fig. 100. 
Plateexcile fies: 135803 a 
The type of the genus; the radula is figured from a dissection by Lt.-Col. H. H. 
Godwin-Austen, F.R.S. 
Has. Kauai (Gould); Hanalei (Baldwin); Kaholuamano (Perkins). 
(3) Leptachatina antigua Pease. 
Leptachatina antigua Pease, P. Zool. Soc. London, 1869, p. 651 (nom. sol.) ; 
J. Conchyl. xvi. (1870), p. 94; Crosse, J. Conchyl. xxiv. p. 98, pl. m1. fig. 6. 
Leptachatina antiguata Pease, J. Conchyl. xvii. (1870), p. 87 [err. typ. ]. 
Has. Kauai (Pease); Mana (Baldwin). 
(4) Leptachatina approximans Ancey. 
Leptachatina approximans Ancey, Naturaliste, 1897, p. 222. 
Has. Waianae, Oahu (Ancey). 
(5) Leptachatina arborea, n. sp. 
Testa ovato-oblonga, turrita, tenuis vel tenuiuscula, dextrorsa, cornea, longitudina- 
liter levissime striatula; anfr. 6—7, plano-convexi, ultimus 2 altitudinis testae 
aequans ; sutura bene impressa; apertura quadrato-ovata, margine dextro subincras- 
satulo, columellari verticali, incrassato, reflexo, plica parva vix conspicua munito. 
mt os diam. 3°60 mill; Plate XI. fig. 21. 
The plica is very inconspicuous; the colour becomes lighter in adult specimens, and 
then the polished, transparent gloss disappears and the shell becomes of a straw colour. 
Over thirty specimens were collected by Mr Perkins ; they vary slightly in shape, a 
few being broader in proportion to the length, and having more inflated whorls. 
Mr Baldwin sends me the following note: ‘It is found on the Candle-nut tree 
(Aleurites moluccana), among the leaves of the Bird-nest fern (Aspdentum nidus), some- 
times at a height of 30 or 4o feet. All the other known species of Leftachatina are 
terrestrial—under rocks or on dead leaves and decaying wood.” 
Has. Hawaii, Kona at 4000 feet (Perkins); Olaa, Hilo (Baldwin). 
