J2 Original Description!^ of Achatinettd. 



36. Achatinella napus Pfeiffer. 



A. napus Pfr. P. Zool. Soc. London. 1855, p. 5, pi. xxx. fig. 19. 



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

 fasciis griseo-carneis et interdum lineis castaneis cingulata ; spira elongato- 

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

 planis, sequentibus convcxiusculis, ultimo 1-3 longitudinis svibarqiiante, 

 rotundato ; apertura diagonal!, truncato-auriformi ; plica cokimellari supera, 

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

 mellari subdilatato, adnato. Long. 19 1-2, diam. 10 1-2 mill. 



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

 shin}', whitish, encircled with graj'ish flesh-colored bands and 

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

 suture distinctly 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, lighth- twisted ; 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 sedlion. 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 leucozonns Gk. P. Zool. Soc. London, 1873, p. S3 ; pi. x, fig. 6. 



Testa subperforata, dextrorsa, globoso-conica, nitida, increment! lineis 

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

 ad periplieriam zona alba interrupta ; sutura distincte albo marginata ; spira 

 rccte conica ; anfract. 6, primi 3 convexiusculi, cieteri convex! ; 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 

 distindlly margined with white ; spire decidedly conical ; whorls 6. 

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

 lip very slightly dilated, tinged with rose-brown, thickened within ; 

 coltimellar fold strong, white. 



Affinities. It is related to and passes into A. napus 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 being 

 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. 



