74 MESSRS. UULICK AND SMITH ON [Jan. 7, 



which is readily distinguished from this by the two black lines upon 

 the periphery of the whorl. The black or dark brown lines of that 

 species belong to the solid substance of the shell, while the green and 

 yellow bands of this species belong to the epidermis. 



Remarks. No dextral form of this shell has been found. The 

 specimen figured is from Halawa. 



Achatinella augusta, Sm. (Plate IX. fig. 7 •) B.M. 



Testa sinistrorsa, ovato-conica, nitida, increment! lineis et transver- 

 sim exilissime striata, viridis, saturate viridi strigata lineisque 

 spiralibus viridibus rufisque obscuris cincta, infra suturam albam 

 zona flava ornata ; sutura distincte albo marginata ; anfract. 6|, 

 primi 4 convexiusculi, cceteri convexi ; apertura alba ; perist. 

 tenue, intus dilute fusco tinctum ; plica columellaris valida, fusco- 

 rosea. 

 Long. 24 mill., diam. 12|. 



Var. Testa omnino flava, suturam infra zona alba cincta. 

 Station. On trees. 



Habitat. The metropolis of the species is Waialae, near the east 

 end of Oahu. It is also found in Wailupe and Palolo. 



Affinities. This species is, on the one hand, closely related to A. 

 plumata, Grk., from which it is distinguished by its green and yellow 

 epidermis, which is entirely wanting in that species, and to A.ful- 

 gens, Nwc, from which it differs in being without the broad black 

 bands, which belong not only to the epidermis, but to the solid part 

 of the shell of A. fulgens. It has been described by Newcomb and 

 Pfeiffer as a variety of the latter species. 



Remarks. This species is always sinistral. The specimen figured 

 is from Waialae. 



Achatinella rhodorhaphe, Sm. (Plate IX. fig. 10.) B.M. 



Testa sinistrorsa, breviter ovato-conica, imperforata, nitida, incre- 

 ment i lineis et transversim {sub lente) exilissime striata, flava, 

 suturam infra zona lata dilute rosea cincta ; anfract. 6, convexi, 

 primi 3 albi ; sutura distincte marginata ; apertura alba; perist. 

 margine acuta intus limbatum ; plica columellaris valida, rosea 

 (interdum alba). 



Long. 15 mill., diam. 8|. 



Var. Testa flava, suturam infra castaneo zonata. 



Station. On trees. 



Habitat. The metropolis of the species is Helemano, on Oahu. It 

 is also found in Ahonui, Wahiawa, Opaiula, and Kawailoa. 



Affinities. It is related to A. livida, Swn., and A. curta, Nwc, but 

 is easily distinguished from either. 



Remarks. This species is always sinistral. 



Achatinella diluta, Sm. (Plate IX. fig. 14.) B.M. 



Testa dextrorsa, ovato-subconica, nitida, incrementi lineis transver- 

 simquc indistincte minutissime striata, dilute luteo-virens, lineis 

 pluribus transversis viridibus obscuris cincta ; sutura leviter mar- 



