328 FAUNA HAWAIIENSIS 



van stewarti Green. 



Achatina stewarti Ore&n, Contrib. Macl. Lye. Philad. i. (1827, July), p. 47, pi. iv. 



figs. 1—4. 

 Achatinella stewarti Green, Reeve, Conch. Icon. Achatinella, sp. 26. 

 Achathiella pulcherrima Reeve, 1. c. sp. 23, fig. a [nee Swainson]. 

 Achatinella tricolor Smith, P. Zool. Soc. London, 1873, p. 70, pi. ix. fig. 6. 

 Hab. Oahu (various authors); Heia (Smith); Nuuanu and Mt. Tantalus 

 (Perkins). 



van crassidentata Pfeiffer. 



Achatinella {Achatinellastruni) crassidentata Pfeiffer, P. Zool. Soc. London, 1855, 



p. 6, pi. XXX. fig. 23. 

 Achatinella diversa Gulick, Ann. Lye, New York, vi. p. 220, pi. vii. fig. 42 



(1856, Dec). 

 Achatinella varia Gulick, t. c. p. 222, pi. vii. fig. 43. 

 Achatinella arialoga Gulick, t. c. p. 227, pi. vii. fig. 47. 



Hab. Oahu, Halawa (Baldwin) ; Halawa, Palolo, Waialae and Wailupe (Gulick) ; 

 Waialae and Nuuanu (Perkins). 



van liliacea Pfeiffer. 



Achatinella [Achatinellastrum) liliacea Pfeiffer, P. Zool. Soc. London, 1859, 

 p. 31. 



Hab. Oahu (Baldwin). 



The difficulty of arriving at a satisfactory dividing line between A. vulpina and 

 A. producta is very great. As at present arranged, A. vulpina is the brown shell, 

 van stewarti the greenish coloured form, van crassidentata the parti-coloured, and 

 van liliacea the bandless variety ; all the above being sinistral. A. producta on the 

 other hand is reserved for the larger and, usually, dextral form. 



(106) Achatinella [Achatinellastrum) ivailuaensis, sp. nov. 



Testa dextrorsa, subperforata, nitida, turrita, solidula, levissime striata, alba, lineis 

 castaneis picta, apud peripheriam zona alba, in sutura linea nigro-castanea notata ; 

 anfr. 5 — 5-^, regulariter crescentes, convexi ; apertura auriformis ; margine columellari 

 plica fusca mediocri munita, margine dextro acuto, callo parietali tenuissimo. Long. 

 15-5, alt. 8-4 mill. Plate XI. fig. 19. 



A pretty little shell of the group of A. Bella Reeve, of Molokai. A variety also 

 occurred (Plate XI. fig. 20) in which the banding is almost obsolete, save in the suture 

 of the earliest whorls and in one strong dark band below the periphery. 



Hab. Maui, Wailua (Perkins). 



