270 ACHATINELLA C^ESIA. 



rose; peristome thickened within; with external margin un- 

 reflected, arcuate, acute; columellar margin dilated, adnate; 

 parietal margin wanting. Length 19, breadth 10, length of 

 body-whorl 13y 2 mm. Average weight 5.6 grains. 



"Station, on trees. Habitat, Hakipu, Oahu, J. T. G. ! 

 Waikane, Frick. 



"Var. b, white. Var. c, pale green. Remarks: allied to 

 A. dimorpha Nob." (Gulick). 



"Achatinella scitula. Shell sinistral, imperf orate, elon- 

 gately ovate, solid, shining, striated, streaked with brown and 

 pale fawn; apex subacute; spire convexly elongate; suture 

 marginate, moderately impressed; whorls 6%, convex; colu- 

 mella with a moderately developed white fold near the body- 

 whorl ; aperture sinuately ellipsoidal, white within ; peristome 

 well thickened within; with external margin unreflected, 

 slightly compressed in the middle, with the anterior edge arcu- 

 ate ; columellar margin dilated, adnate, parietal margin want- 

 ing. Length 21, breadth 102/ 3 , length of body-whorl 13y 2 

 mm. Average weight 4.8 grains. 



''Station, on trees. Habitat, Hakipu, Oahu, J. T. G.! 



' ' Remarks : There is a green variety which passes into var. 

 c. of the last described species. But in that species the 

 suture and columella are dark, while in this they are light- 

 colored. 



" Achatinella cervina. Shell sinistral, scarcely perforate, 

 ovate conic, rather thin, shining, striated, fawn colored, with 

 obscure brown spiral lines; apex subacute; spire convexly 

 conic; suture obsoletely margined, moderately impressed; 

 whorls 6, convex; columellar fold central, white, sublamelli- 

 form, well twisted; aperture sinuately oval, white within, 

 peristome slightly thickened within ; with external margin un- 

 reflected, arcuate ; columellar margin dilated, adnate, parietal 

 margin wanting. Length 20, breadth 11%, length of body- 

 whorl 14 mm. Average weight 3.8 grains. 



" Habitat, Kahana, Oahu, very rare, J. T. G" (Gulick). 



Species of the Waianae range. 



In the systematic classification these species are about 

 equally related to the series of A. papyracea and to that of 

 A. livida. All of them are extremely rare shells, each species 

 known from a single small colony only, and by this we mean 

 a single clump of bananas or the like. A. lehuiensis and its var- 

 iety gulickiana have been found but once, and that over fifty 

 years ago, a single individual of each. A. thaanumi is known 



