22 Original Descriptions of Achatinclla. 



Shell dextral (sometimes sinistral), short ovate-conic, hardly 

 shining, striated with lines of growth (not spiral), more or less 

 bright yellow, the whorls encircled in the middle with a broad 

 brown band (sometimes 2-3 bands at the base); suture narrowly 

 margined with brown (sometimes with white); whorls 6, slightly 

 convex, the first 3 always white ; spire almost perfectly conical, 

 hardly concave ; aperture whitish, receding ; lip light rose, some- 

 what expanded, thickened within ; columellar fold large, rose. 



Affinities. It is most nearl}^ allied to A. tiiberans Gk. 

 Remarks. In Kalaikoa all are dextral ; in Ahonui one-tenth 

 are sinistral. — Gk. 



Hab. The metropolis is in Kalaikoa, on Oahu ; it is also 

 found in Ahonui. — Gk. 



Named from its yellow color. 



20. Achatinella tuberans Gulick. 



Apex liibenins Gk. P. Zool. Soc. London, 1S73, p. 81 ; pi. x, fig. 3. 



Testa dextrorsa, globoso-conica, nitida, incrementi lineis (haud spirali- 

 bus) striata, cinereo strigata, zonis pluribus albidis nigro-fuscisque inter- 

 rupta ; sutura marginata, pallida; anfract. 6, prirni 3 albidi, convexiusculi, 

 caeteri convexi ; spira concava ; apertiira alba ; perist. aliquanto dilatatum, 

 intus incrassatum, dilute roseo-fusco tinctum ; plica columellaris valida, 

 albida. Long. 20, diam. 13 1-2 mill. 



Var. A. Testa alba, fusco luteoque varie zonata. 



Var. B. Testa subflava, nigro-fusco crebre zonata. 



Shell dextral, globosely conical, shining, striated with lines of 

 growth (not spiral), striped with ash, separated into many whitish 

 and blackish brown bands ; suture margined, whitish ; whorls 6, 

 first 3 whitish, somewhat convex, the others convex; spire con- 

 cave ; aperture white ; lip somewhat expanded, thickened within, 

 tinged with light rose brown ; columellar fold strong, whitish. 



This is a dextral species. Sinistral forms are found only in a 

 few specimens passing into other species. — Gk. 



Affinities. It is most nearly allied to A . flavidus Gk. 



Hab. The metropolis of this species is Kalaikoa, on Oahu. 

 It is also found in Ahonui ; and single specimens have been 

 brought from Wahiawa and Helemano. — Gk. 



31. Achatinella leucorrhaphe Gulick. 



Apex leiicorthaphc Gk. P. Zool. Soc. London. 1873, p. 79; pi. x, fig. 2. 



Testa dextrorsa, breviter ovato-conica, incrementi lineis (baud spirali- 

 bus) striata, grisea, strigis saturate cinereis irregulariter interruptis, line- 

 isque spiralibus paucis albis indistinctis ornata ; sutura late niveo marginata; 



