98 Original Descriptions of .Iclialiiiclla. 



This is generally a white shell, with the exception (jf the black 

 band mentioned above ; however, some examples have a dark 

 sutural band, like A. bclla Rve., and others are pure white with 

 no bands of anv kind. 



TKSSELLATA GROUP. 

 152. Achatinella tessellata Newcomb. 



A. Ifiii-Uata Xewc. 1". Zool. Soc. I.omloii, i\=;.;. p. 139, pi. x.xiii. fiK- 26. 



vShell sinistral, oblong-ovate, solid ; whorls 6, convex, the last 

 somewhat inflated ; white or fawn-coloured ground, very finel\- 

 shagreened, plain, or variously striped with transverse black or 

 chestnut bands ; the upper whorls always tessellated black and 

 white ; aperture white or roseate, ovate, effuse below ; columella 

 short and broadly callous; lip expanded, thickened within and 

 seraireflected ; animal light grey, tentacles black, mantle slate- 

 colour. Long. 21/20, lat. 12/20 poll. 



Found at Kalai on Tutui trees, and on the broad leaf of the Ti. 

 Has some resemblance to virgulata Mighels, but the tessellated 

 top at once distinguishes it. 



Animal dark slate above, tentacles of same color ; strongly 

 granulate, bottom of foot light olive ; mantle black ; as long as 

 the shell ; movements sluggish. — Newc. 



Hab. Kalae to Waikolu.— Bald. 



153. Achatinella rufa Newcomb. 



A. yiifa Xewc. P. Zool. Soc. London. 1853, p. 130. pi. xxii. fig. 3. 



Shell couically ovate, solid; 6 whorls, flatly convex, with decus- 

 sating striae ; columella strongly callous ; suture plain, moderately 

 impressed ; umbilicus small and open ; lip expanded, and subreflcct- 

 ed below ; ground colour browmish red, covered with an epidermis 

 of a mottled brown and white, the latter arranged on the central 

 whorls in fine zigzag markings, which are lost on the last whorl in a 

 uniform grayish umber. The inferior half of the last whorl ( usually ) 

 encircled by a broad white band. Long. 18/20, lat. 10/20 poll. 



This is a ver}' rare species, the numbers found .scarcely fur- 

 nishing materials for a description to fix or determine the perma- 

 nent charadlers. 



Animal light flesh colour, tentacles slightly tinged with brown, 

 mantle dark brown, longer than the shell, movements lively.— 

 Newc. 



