Original Descriptions of Achatinella . 29 



Var. Shell dextral ; first 3 whorls pale, the following 2 and 

 the upper half of the last whorl striped with gray-brown, the lower 

 half yellow, banded with gray-brown. 



Affinities. It is allied to A . apicatus Newc . , and A . lilaceus Gk . 

 Remarks. In Ahonui two-thirds of the specimens are sinis- 

 tral ; in Kalaikoa only about one-eighth are sinistral. — Sm. 



Hab. Most abundant in Kalaikoa and Ahonui, but it is some- 

 times found in valleys to the west as far as Waialee. — Sm. 



31. Achatinella valida Pfeiffer. 



A , va/ida Pfr. P. Zool. Soc. London, 1855, p. 6; pi. xxx, fig. 24. 



A. testa imperforata, dextrorsa (rarius sinistrorsa ), ovato-conica, solida, 

 sublaevigata, cinereo-fusca, pallide subfasciata et nigro strigatula ; spira ele- 

 vata, conica, apice fusca, acuta; sutura marginata, alba; anfr. 6, priinis 3 

 planis, sequentibus convexiusculis, ultimo 2-5 longitudinis subyequente, in- 

 flate; apertura obliqua, truncato-auriformi ; plica columellari supera, nodi- 

 formi, parum torta ; perist. fusco limbato, margine dextro subrecto, stricti- 

 usculo, columellari dilatato, appresso. Long. 21 1-2, diam. 13 mill. 



B. Nigra, pallide interrupte lineolata vel fasciata. 



Shell dextral (more rarely sinistral), imperforate, ovately 

 conical, solid, smooth, ashy brown with fine pale bands and black 

 stripes; spire elevated, conical, apex brown, acute ; suture mar- 

 gined, white ; whorls 6, first three flat, the following somewhat 

 convex, the last inflated, equal to 2-5 of the length ; aperture ob- 

 lique, truncate-auriform ; columellar fold high, nodiform, slightly 

 twisted ; lip margined with brown, nearly erect at the right mar- 

 gin, somewhat constricted, expanded at the columella, appressed. 



Hab. H. I. — Frick. Helemano to Waialee. 



Mr. Baldwin places this with A. swiftii Newc. 



Dr. Cooke found the type shells to be longer and narrower 

 than the typical swiftii, and it may come from the Waianae side of 

 Waialua. 



32. Achatinella cinerosa Pfeiffer. 



A. cinerosa Pfr. P. Zool. Soc. London, 1855, p. 2, pi. xxx, fig. 5. 



A. testa dextrorsa, imperforate, ovato-conica, solida, subhevigata, 

 nitida, fusco-grisea, lineis fuscis et albis radiata ; spira conica, apice acuti- 

 nscula, alba; sutura subcrenulata, albo-marginata ; anfr. 6, vix convexius- 

 culis, ultimo spira paulo breviore, basi rotundato ; apertura parum obliqua, 

 truncato-auriformi ; plica columellari torta, valida, dentiformi ; perist. crasse 

 albo-labiato, margine dextro substricto, breviter expanso, columellari crasso, 

 adnato. Long. 21, diam. 11 mill. 



B. Fulvida, fusco radiata, sutura concolore. 



Shell dextral, imperforate, ovately conical, solid, smooth, 

 shining, brown-gray, striped with brown and white lines ; spire 

 conical, apex somewhat acute, white ; suture subcrenulate, white- 



