1 8 Origmal Descriptions of Achatinella. 



short, slightly couvexly conic, subacute ; suture lightly impressed, 

 submarginate ; whorls 5, moderately convex, the last ventricose 

 nearly as long as the spire ; brown at the base ; aperture oblique, 

 subquadrangularly oval, pearly within ; columellar fold inconspicu- 

 ous, hardly twisted ; lip acute, brown-margined, inner edge of lip 

 white, margin thickened at the columella, subadnate. 



Hab. H. I. — Frick. Nuuanu. 



Its appearance is very similar to A. decora Fer., and if found 

 in Nuuanu Valley is undoubtedly that shell. Mr. Baldwin places 

 it as an inflated variety. 



TURGIDA GROUP. 

 1/ 12. Achatinella turgida Newcomb. 



A. tiirgida Newc. P. Zool. Soc. London, 1853, p. 134; pi. xxii, figs. 10, loa. 



Shell ventricose, pointed at the apex, sinistral or dextral, 

 smooth, polished, gradually enlarging for four turns and then very 

 rapidly, the last two forming most of the shell ; suture slightly 

 impressed, beneath which revolves a linear depression ; aperture 

 subovate ; columella short, terminating in a strong conical tubercle 

 projedling into the aperture; outer lip simple, thickened within, 

 slightly tinged with pink or brown ; tubercle the same ; fauces 

 white ; coloring ejitremely various, ground white, yellow or black, 

 with (or without) longitudinal zigzag lines, transverse bands or 

 blotches covering the surface. Long. 14/20, lat. 11/20 poll. 



Hab. Ewa. — Newc. The metropolis of this shell is Waipio. 

 This and the following three shells may be placed together 

 as the turgida group. 



13. Achatinella polymorpha Gulick. 



Apex polymorpha Gk. P. Zool. Soc. London, 1873, p. Si ; pi. x, fig. 5. 



Testa dextrorsa, subperforata, globoso-conica, nitida, incrementi lineis 

 (haud spiralibus) striata, dilute brunnea, zonis pluribus strigisque cyaneo- 

 nigris ornata, zona lata nivea ad peripheriam cincta ; sutura leviter margin- 

 ata, brunnea; anfract. 6, primi 4 convexiusculi albidi, Cicteri convexi ; spira 

 leviter concava ; apertura alba ; perist. margine brunneo tinctum, intus in- 

 crassatum ; plica columellaris valida, albida. Long. 17, diam. 12 mill. 



Var. A. Testa cervina, sutura brunnea. 



Var. B. Testa alba, zonis panels basique brunneis ornata; sutura brunnea. 



Shell dextral, subperforate, globosel}' conical, shining, stria- 

 ted with lines of growth (not spiral), light brown, marked with 

 many bands and bluish black stripes, encircled with a broad snow- 

 white band at the periphery; suture slightly margined, brown ; 



