54 dfi^hia/ Descriptions of Achatinella. 



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

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

 recto, acuto, pone limbum fusculum albo labiate. Long. 24, diam. 11 mill. 



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

 pale flesh-colored, 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.produda Rve. Both sinistral and dextral 

 examples occur. 



OLIVACEA GROUP. 



66. Achatinella olivacea Reeve. 



A. olivacea Rve. Conch. Icon. Achat., London, 1S50, sp. 20. 



Shell oblong-conical, sinistral, whorls convex, thinlj- 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 prodtida group. 



67. Achatinella prasinus Reeve. 



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



Shell oblong-conical, sinistral, whorls convex, obliquelj- 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 verj- 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. cailatiea 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 



