84 Original Descriptions of Achatinella. 



bands, one encircling the base, the other passing around the per- 

 iphery and revolving on the spire just above the suture ; the two 

 bands are sometimes confluent, and often the shell is uniform white, 

 without bands. Whorls 6, narrowly margined above, somewhat 

 convex ; suture moderately impressed. Aperture oblique, white 

 within, sinuately oval ; peristome white, rather obtuse, thickened 

 within, basal and columellar margins slightly expanded, extremi- 

 ties united by a very thin callus ; columella terminating in a strong, 

 tortuous white fold. Length 17, diam. 11 1-2 mm. 



Animal. Mantle black, sometimes mottled with white, mar- 

 gined with a narrow line of lighter shade. Superior and under 

 portion of foot light brown. Tentacles, tentacular sheath, and 

 front above very dark brown. 



This distinct species is dedicated to Prof. A. B. Lyons, of 

 Oahu College, who has done much to stimulate the study of the 

 Hawaiian land fauna. — Bald. 



Hab. Konahuanui Mt., at an altitude of about 3000 feet 

 above sea level. — Bald. 



This may prove to be closely related to A. soiccrbyana Pfr. 

 found on the Kalihi ridges. 



125. Achatinella luteostoma Baldwin. 



A. luteostoma Bald. P. Acad. Phil., 1895, p. 217, pi. x, figs. 7, S. 



Shell sinistral, imperforate, solid, ovate, spire coiivexly coni- 

 cal, apex obtuse ; surface shining, marked with fine growth lines, 

 under a strong lens seen to be decussated by close, extremely mi- 

 nute spiral striae, apical whorls smooth. Color white, with a red- 

 dish-yellow lip. Whorls 5 1-2, margined above, slightly convex. 

 Suture moderately impressed. Aperture oblique, sinuately oval, 

 white within. Lip obtuse, thickened within, columellar margin 

 very slightly reflexed, extremities united by a very thin yellowish 

 callus. Columella reddish-yellow, terminating in a strong tortu- 

 ous fold. Length 15 1-2, diam. 91-2 mm. 



It is Bulimella rosea Swains., var. Hartman, Proceedings 

 Academy of Natural Sciences of Philadelphia, Jan. 31, 1888, p. 30. 



In occasional examples the basal portion below the periphery 

 is light brown, and sometimes a bright chestnut spiral band en- 

 circles the periphery. 



Dr. Hartman in his valuable Synonymic Catalogue of Achati- 

 nella, has noted this species as a small variety of A. rosea Swains. 

 When we sent him the shell we were unacquainted with the animal. 

 This proves very different from that of A . rosea ; and further, the 

 habitat of the two species are separated by a forty mile range of 



