54 Original Descriptions of Achatinella. 



vix convexiusculis, ultimo 2-5 longitudinis fere aequante ; apertura obliqua, 

 truncato-auriformi ; plica colum. alba, valida, dentiformi, subsulcata ; perist. 

 recto, acuto, pone linibum fusculum albo labiato. Long. 24, diam. 11 mill. 



Shell imperforate, oblong-turreted, somewhat solid, smooth, 

 pale flesh-eolored, ornamented with close brown stripes, often en- 

 circled by one or two black lines; spire turreted, apex somewhat 

 acute, white ; suture lightly margined, pale ; whorls 6 1-2, scarcely 

 convex, the last almost equal to 2-5 the length ; aperture oblique, 

 truncate-auriform ; columellar fold white, strong, dentiform, sub- 

 sulcate ; peristome erect, acute, with white lip behind the brown 

 edge. 



Hab. Pauoa and Tantalus. 



This is a common shell found near Honolulu, and certainly 

 comes very near to A. produrta Rve. Both sinistral and dextral 

 examples occur. 



OLIVACEA GROUP. 



66. Achatinella olivacea Reeve. 



A. olivacea Rve. Conch. Icon. Achat., London, 1850, sp. 20. 



Shell oblong-conical, sinistral, whorls convex, thinly margined 

 round the upper part, columella with a twisted plait ; dark green- 

 olive, encircled with rather obscure brownish lines, columella and 

 interior of the aperture white. 



Hab. Manoa to Nuuanu. — Bald. 



This group is very nearly related to the producta group. 



67. Achatinella prasinus Reeve. 



A.prasinus Rve. Conch. Icon. Achat., London, 1S50, sp. 27. 



Shell oblong-conical, sinistral, whorls convex, obliquely some- 

 what rudely impressly striated, columella short, twisted-plaited ; 

 very dark green, encircled with obscure dark lines, white at the 

 apex, columella white. 



There is a slight peculiarity of form, and a very distinct 

 arrangement of colors in this species. — Newc. 



Hab. Nuuanu and Kalihi. 



It seems to be one of the dark green forms of A. olivacea Rve. 



68. Achatinella castanea Reeve. 



A. castanea Rve. Conch. Icon. Achat., London, 1S50, sp. 24. 



Shell oblong-conical, sinistral, rather obtuse at the apex, 

 whorls convex, thinly margined round the upper part, columella 



