Original Descriptions of Achatinella. 43 



letely plaited ; aperture oblique, truneately oval, light brown 

 within ; peristome scarcely thickened within ; with external mar- 

 gin anteriorly reflected, arcuate ; columellar margin dilated, not 

 appressed ; parietal margin wanting. 



Length 0.76 in. (19 1-3 mill.), breadth 0.42 in. (10 2-3 mill.). 



Length of body whorl 0.53 in. (13 1-2 mill.). 



Weight 2.50 grains. 



Remarks. Somewhat resembles A. buddii Newc, in style of 

 coloring, but lacks the black tip of that species, and decidedly 

 differs in the reflected lip, and deeply perforated umbilicus. 



Hab; Hawaiian Ids. — Gk. Niu. 



51. Achatinella fuscosona Smith. 



A. fuscozona Sm. P. Zool. Soc. London, 1S73, p. 76; pi. ix, fig. 9. 



Testa sinistrorsa, ovato-conica, perforata, parum nitida, incrementi lineis 

 et transversim (sub lente) minutissime striata, albida, plusve minusve dilute 

 fusco oblique strigata, transversimque obscure lineata vel zonata ; sutura dis- 

 tincte fusco margiuata, anfract. 6 1-2, couvexi, ult. amplus ; apex nigresceus; 

 apertura alba; perist. tenue, intus leviter limbatum ; plica columellaris 

 valida, rubescens (interdum albida ). Long. 21, diam. 12 mill. 



Var. Testa elongato-conica ; sutura zona latissima fusca cincta. Long. 

 23 1-2, diam. 11 mill. 



Shell sinistral, ovately conic, perforate, hardly shining, trans- 

 versely and very minutely striated with lines of growth, whitish, 

 more or less obliquely striped with light brown, and transversely 

 obscurely lined or banded ; suture distinctly margined with brown, 

 whorls 6 1-2, convex, the last broad; apex blackish; aperture 

 white ; lip thin, lightly edged within ; columellar fold strong, red 

 (sometimes whitish). 



Var. Shell elongately conic ; suture encircled with a very 

 broad brown band. 



Affinities. It is intermediate between A. adusta Rve. and 

 A. buddii Newc. 



Hab. Makiki, on Oahu ; two or three specimens have been 

 found in Palolo. 



Mr. Baldwin places this shell with A. buddii Newc. It is also 

 very near to A. pexa Ok. Dr. Cooke found the type shell to be a 

 white variety of A, buddii. 



52. Achatinella augusta Smith. 



A. augusta Sm. P. Zool. Soc. London, 1S73, p. 74; pi, ix, fig. 7. 



Testa sinistrorsa. ovato-conica, nitida, incrementi lineis et transversim 

 exilissime striata, viridis, saturate viridi strigata lineisque spiralibus viridi- 

 bus ruiisque obscuris cincta, infra suturam albatn zona Maya ornata ; sutura 



