MOLLUSCA 329 
(107) Achatinella (Achatinellastrum) zonata Gulick. 
Achatinella zonata Gulick, Ann. Lyc. New York, vi. p. 237, pl. vim. fig. 58. 
Achatinella glauca Gulick, t.c. p. 232, pl. vin. fig. 51. 
United by Newcomb with A. ¢rzlzneata Gulick; it appears however to have 
much flatter whorls, and I follow Mr Baldwin, with some little doubt, in restoring it to 
specific rank. According to Newcomb, A. glauca is a synonym of A. “vida Swain., 
but specimens in the Brit. Mus. ‘‘named from Gulick’s type” as a variety, lead me to 
place it here. 
Has. Oahu, Waimea, Pupukea, Waialei, Kahuku, Hauula, and Kaawa (Gulick); 
above Ewa (Perkins). 
The following appears to be only a manuscript name: 
Achatinellastrum olesontt Baldwin, Cat. Shells Hawaiian Islands, 1893, p. 5. 
Has. Oahu, Nuuanu. 
PERDICELLA Pease. 
Perdicella Pease, P. Zool. Soc. London, 1869, p. 649. 
Pease, unfortunately, having named no type, it becomes necessary to select one 
and I propose to take A. helena Newc. The species come from Maui and Molokai. 
(1) Perdicella fulgurans, sp. nov. 
Testa subperforata, dextrorsa, ovato-turrita, nitida, sub lente lineis spiralibus 
confertim sculpta, albida, strigis fulgurantibus castaneis elegantissime picta, sutura 
modice impressa, apice obtusulo ; anfr. 54, plano-convexi, ultimis 3 longitudinis testae 
aequans ; apertura ovato-pyriformis, intus lilacina; peristoma margine dextro simplici, 
columellari subreflexo; plica columellaris torta, subprominens, mediocris, rapide 
ascendens. Long. 16; lat. 8; long. apert. 8:1 ; lat. apert. 4:9 mill. (Plate XI. fig. 5.) 
This very pretty shell is akin to P. zedvina Pfr., but may be readily separated 
from it by its greater size, by being much broader in proportion to the length, and by 
the colour-pattern being finer in design and more zigzag. The protoconch is brown, 
then becoming paler with a dark shade near the sutural line. It is the Partulina 
zebrina Pfr. of Mr Baldwin’s valuable catalogue. 
Has. E. Maui, Makawao to Huelo (Baldwin); Maui (Hutchison). 
