32 Original Descriptions of Achati7ielia. 



36. Achatinella napus Pfeiffer. 



A. nafiiii Pfr. P. Zool. Soc. lyOndon, iS.ss, p. 5, pi. xxx, fig. 19. 



A. testa imperforata, dextrorsa, turrita, solida, striatula, nitidula, albida, 

 fasciis griseo-carneis et interdum linei.s ca.staueis cingulata ; .spira elongato- 

 conica, apice alba, acuta; sutvira distincte marginata ; anfr. 6 1-2. .superis 

 plaiiis, .sequeiitibus convexiusculis, ultimo 1-3 longitudinis subitquante, 

 rotundato ; apertura diagoiiali, truncato-auriformi ; plica columellari svipera, 

 mediocri, leviter torta ; perist. intus labiato, margine dextro recto, colu- 

 mellari subdilatato, adnato. Long, ig 1-2, diam. 10 1-2 mill. 



Shell dextral, imperforate, turrited, solid, somewhat striated, 

 shiny, whitish, encircled with grayish flesh -colored bands and 

 sometimes chestnut lines ; spire elongate-conic, apex white, acute; 

 suture distindtly margined ; whorls 6 1-2, the upper flat, the fol- 

 lowing somewhat convex, the last nearly equal to 1-3 the length, 

 rounded ; aperture diagonal, truncate-auriform ; columellar fold 

 high, not large, lightly twi.sted ; peristome thickened within, right 

 margin erect, somewhat expanded at the columella, adnate. 



Hab. Waialee.— Bald. 



Dr. Cooke found the type shell rather narrow for a shell of 

 this sec5lion. The third and fourth whorls are light brown, with 

 broad and narrow white or light brown bands ; the suture is brown. 



37. Achatinella leuco^ona Gulick. 



Apex leticosomn Gk. P. Zool. Soc. London, 187,3, p. S3; pi. x, fig. 6. 



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

 (liaud spiralibus) striata, griseo-brunnea, saturate griseo-brunneo strigata, 

 ad peripheriam zona alba interrupta ; sutvira di.stincte albo marginata ; spira 

 recte conica ; anfract. 6, primi 3 convexiusculi, caeteri convexi ; apertura alba; 

 perist. paululum dilatatum, dilute roseo-fusco tinctum, intus incrassatum; 

 plica columellaris valida, alba. Long. 19, diam. 12 mill. 



Shell subperforate, dextral, globose-conical, shining, striated 

 with lines of growth (not spiral), grayish-brown, striped with dark 

 grayish-brown, separated at the periphery by a white band ; suture 

 distincflly margined with white ; spire decidedly conical ; whorls 6, 

 fir.st three slightly convex, the others convex ; aperture white ; 

 lip very slightly dilated, tinged with ro.se-brown, thickened within ; 

 columellar fold .strong, white. 



Affinities. It is related to and passes into A. naptis Pfr., 

 which is also found in Waialee ; but the usual forms are distin- 

 guished by having a shorter spire and a white suture, and in 1)eing 

 free from the yellowish hue of that species. 



Remarks. This species is always dextral. — Gk. 



Hab. The metropolis of this species is in Waialee. A few 

 specimens have also been found in Wahiawa. — Gk. 



