2o Original Descriptions of Achatinella . 



spira vix breviore ; plica coluniellari crassa, tuberculiformi, pallide lilacea ; 

 apertura diagonali, sinuato-semicirculari ; perist. recto, nigro-fusco, limbato, 

 intus crenato-labiato. Long. 19 t-2, diam. 13 mill. 



Shell sinistral, imperforate, globosely conical, solid, roughly 

 striate, rather shiny, whitish ; spire concavely conical, apex acute; 

 suture deeply margined ; whorls 51-2, the upper plain, the follow- 

 ing convex, the last inflated, hardly shorter than the spire ; colu- 

 mellar fold thick, tuberculiform, pale lilac ; aperture diagonal, 

 sinuously semicircular ; lip erect, blackish brown, margined, crenu- 

 lately thickened within. 



Hab. Oahu. — Newc. Nuuanu. 



FORBESIANA GROUP. 

 16. Achatinella forbesiana Pfeiffer. 



A.forbesiana Pfr. P. Zool. Soc. London, 1855, p. 5; pi. xxx, fig 16. 



A. testa subperforata, dextrorsa vel sinistrorsa, ovato-conica, solida, cou- 

 ferte striatula, nitida, grisea vel albida, fasciis crebris griseis vel fuscis, 

 ssepe confluentibus picta ; spira exacte conica, sursum alba, apiculo nigro 

 acutiuscnlo ; sutura marginata ; anfr. 6, convexiusculis, ultimo spira paulo 

 breviore, rotundato ; apertura obliqua, obauriformi ; plica columellari supera, 

 valida, nod i for mi ; perist. fusculo vel carneo limbato, margine externo 

 breviter expanso, columellari crasso, subadnato. Long. 19, diam. 10 1-2 mill. 



Shell subperforate, dextral or sinistral, ovately conical, solid, 

 closely striated, shining, gray or whitish, marked with numerous 

 gray or brown bands, often confluent ; spire markedly conical, 

 white above, with a somewhat acute black-tipped apex ; suture 

 margined ; whorls 6, somewhat convex, the last a little shorter 

 than the spire, rounded ; aperture oblique, obauriform ; columellar 

 fold high, .strong, tuberculiform ; lip margined with brownish or 

 flesh color, with the external edge slightly expanded, thickened 

 at the columella, subadnate. 



Hab. Waialua, Oahu. — Bald. Near Waipio. 



17. Achatinella coniformis Gulick. 



Apex coniformis Gk. P. Zool. Soc. London. 1873, p. So; pi. ix. fig. 23. 



Testa sinistrorsa (interdum dextrorsa), globoso-conica, nitida, incre- 

 rnenti lineis oblique (haud spiralibus) striata, brunnea, dilute brunneo stri- 

 gata, lineis spiralibus pluribus albidis indistincte cincta ; sutura saturate 

 brunneo marginata; spira leviter concava ; anfract. 6 1-2, primi 3 1-2 con- 

 vexiusculi, albidi, casteri convexi ; apertura recedens, alba ; perist. paulu- 

 lum dilatatum intusque incrassaturn, margine dilute roseo (vel brunneo) 

 tinctum ; plica columellaris valida. Long. 18, diam. 12 mill. 



Var. Testa sinistrorsa, cinereo-fusca, albo strigata, et lineis paucis spi- 

 ralibus albis cincta ; sutura brunnea. 



