Original Descriptions of Achatinella. • 187 



Hab. Sandwich Ids. — Frick. 



May be a variety of A. sordida Newe. from the Waianae Mts., 

 Oahu. 



351. Achatinella crassidentata Pfeiffer. 



A. crassidentata Pfr. P. Zool. Soc. London, 1855, p. f >, pi. xxx, fig. 23. 



A. testa imperforata, sinistrorsa, solidula, striatula, parum nitida, alba, 

 fasciis 11011 nullis luteis ornata, interdum basi virenti-lutea ; spira conica, 

 apice obtusula; sutura marginata; anfr. 5 1-2, convexiusculis, ultimo 3-7 longi- 

 tudinis subaequante, basi rotundato; apertura diagonali, sinuato-semiovali; 

 plica colurnellari supera, crassissima, dentiformi; perist. simplice, margine 

 externo acuto, leviter arcuato, colurnellari brevi, angusto. Long. 20, diam. 

 1 1 mill. 



Shell imperforate, sinistral, somewhat solid, slightly striate, 

 hardly shining, white, ornamented with several yellowish bands, 

 sometimes greenish yellow on the base ; spire conical; apex some- 

 what obtuse ; snture marginate ; whorls 51-2, slightly convex, 

 with the last nearly equal to 3-7 of the length, rotundate at the 

 base; aperture diagonal, sinuately semioval; columellar fold high, 

 very thick, tooth-like; lip simple, external margin acute, slightly 

 arcuate, columellar margin short, narrow. 



Hab. Sandwich Ids. — Frick. Palolo to Waialae, Oahu. 



This shell agrees with A. diver sa Gk. 



352. Achatinella hybrida Newcomb. 



A . hybrida Xewc. P. Zool. Soc. London, 1S53, p. 147, pi. xxiii, fig. 52. 



Shell dextral, conical; whorls 6, rounded, margined above, 

 the last somewhat inflated; suture well impressed; columella white 

 or brownish, terminating in a twisted plait; aperture ovate, white; 

 lip simple, thickened within ; striae longitudinal, fine ; colour of 

 shell green, or brown on the last whorl, above white, with fine 

 longitudinal veins of the colour of the epidermis. Long. 18-20, 

 lat. 10-20 poll. 



Hab. Kolau, Oahu. — Newc. 



This shell is a manufactured variety from A. prodncta Rve. 



353. Achatinella macrostoma Pfeiffer. 



.-I. macrostoma Pfr. P. Zool. Soc. London, 1S55, p. 2, pi. xxx, fig. 6. 



A. testa dextrorsa, imperforata, conico-ovata, solidula, levissirne stri- 

 atula, nitida, fulva, fasciis non nullis pallidis et fuscis variegata; spira conica, 

 obtusula; sutura submarginata; anfr. 5 1-2, modice convexis, ultimo spiram 

 sequante, superne turgido, medio attenuato, basi rotundato; apertura parum 

 obliqua, ampla, obauriformi, intus alba; perist. albo, leviter labiato, mar- 

 gine dextro expanse superne valde curvato, columellari dilatato, adnato. 

 hong. 21 1-2, diam. 11 mill. 



