Original Descriptions of Achatinella . 149 



transverse; lip simple, erect, acute, with the columellar margin 

 dilated, reflexed, subadnate. 



Hab. Wahiawa. 



Mr. Baldwin places this with A. nigrolabris Pfr. It is also 

 closely related to A. spirizona Fer. from the opposite range of 

 mountains. 



253. Achatinella decorticata Gulick. 



A. decorticata Gk. P. Zool. Soc. London, 1S73, p. S4, pi. x, fig-. 14. 



T. ovato-conica, dextrorsa, incrementi lineis leviter striata, castanea, 

 labrum versus nigrescens ; anfract. 6-61-2, convexiusculi, primi 3 politi; 

 sutura simplex, palida; apertura intus dilute sordido-caerulea; perist. tenue 

 intus nigrescens, vix incrassatum; plica columellaris tenuis. Long. 16, diam. 

 8 1-2 mill. 



Shell ovate-conic, dextral, lightly striate with lines of growth, 

 chestnut, blackish toward the lip; whorls 6-6 1-2, somewhat con- 

 vex, first three polished; suture simple, pale; aperture light dirty 

 blue within ; lip narrowly blackish within, scarcely thickened; 

 columellar fold thin. 



Affinities. It is allied to Avi. elliptica Gk., the metropolis of 

 which lies to the northwest of this, and to Am. i?ifiafa Pfr., which 

 is found in the valleys to the east. — Gk. 



Remarks. It is always dextral. The specimen figured is 

 from Kawailoa. — Gk. 



Hab. The metropolis of the species is Kawailoa. It is also 

 found in Helemauo, Opaiula, Wainiea, Waialee and Kahuku. 



254. Achatinella elliptica Gulick. 



Amastra elliptica Gk. I'. Zool. Soc. London. 1S73, p. >i:^, pi. x, fig. 15. 



T. dextrorsa, ovata, haud nitida, incrementi lineis leviter striata; an- 

 fract. 5 1-2 convexi, primi 4 1-2 fusco-cornei, et ultimus pallidior, epider- 

 mide saturate olivacea (anfr. ult. antice partim detrita) vestiti; spira sub- 

 turrita, sutura simplex; apertura alba, antice roseo tincta (interdum alba); 

 perist. tenue, intus levissime incrassatum; columella arcuata, labro callo 

 tenui juncta, dente compresso subbasali munita. Long. 15, diam. 8 1-2 mill. 



.Shell dextral, ovate, not shining, lightly striate with lines of 

 growth; whorls 51-2 convex, first 41-2 brownish horn color, and 

 the last lighter, covered with a dark olive epidermis (partly worn 

 away on the upper portion of the last whorl); spire subturreted, 

 suture simple; aperture white colored with rose above (sometimes 

 white); lip thin, very lightly thickened within; columella curved, 

 united to the lip by a thin callus, furnished with a subbasal com- 

 pressed tooth. 



Station. On the ground in the forest. 



