Original Descriptions of Achatinella. 49 



56. Achatinella stewarti Green. 



Achatina stewarti Green. Contrib. Macl. Lye. Phila., I, No. 2 (1827, July), p. 47, pi. iv, figs. 1-4. 



A. testa sinistrorsa — ovato — oblonga — lutescente, minutissime striata — 

 colore varia, nunc unicolore, nunc divertissirne fasciata — columella rosea — 

 glabro tenue — intus albido. — Stewart's Journal, London, 1828, p. 404. 



Stewart's Achatina. — Shell heterostrophe — conical — oblong — 

 about one inch in length and half an inch in diameter — whorls six 

 or seven, rounded and marked with numerous oblique and delicate 

 striae — apex rather obtuse, and not eroded — a deeply impressed 

 line along the upper part of the w r horls, parallel with the suture, 

 periostracha smooth and very glossy, colour and markings exceed- 

 ingly various, the ground colour is usually greenish or some shade 

 of yellow, sometimes a single blackish coloured baud accompanies 

 the suture, sometimes this band is doubled and of different shades, 

 and on many specimens there are two bands, one at the suture and 

 one in the middle of the whorls. In some varieties the base of the 

 body whorl is dark brown, the rest of the shell being of a dark 

 form, and not unfrequently the whole shell is without any mark- 

 ings whatever ; in which case the colour is yellow, the aperture, 

 when inverted is ear-shaped, the truncation of the columella is 

 rounded and thickened in a remarkable manner at its edge ; along 

 the inner margin of the outer lip there is a strong callous ridge, as 

 in most of the species of this genus, which gradually attenuates 

 towards the edge of the lip, which is thin and sharp inside, white 

 and pinkish round the columella. This splendid little Achatina 

 was brought from Oahu, one of the Sandwich Islands, by the Rev. 

 C. S. Stewart. — Green, in Stewart's Journal. 



Hab. Manoa and Tantalus. 



57. Achatinella varia Gulick. 



A. varia Gulick. Ann. Lye. New York, vol. vi, p. 222, p. vii, fig. 43. 



Shell sinistral, imperforate, acuminately oblong, solid, shining, 

 finely striated, white, streaked with brown, with a black line be- 

 neath the suture, and green or brown at the base ; apex somewhat 

 acute ; spire elougately conic ; suture margined, lightly impressed; 

 whorls 6. flatly convex ; columellar fold central, brown or rose, 

 strong; aperture oblique, truncately auriform, white within; per- 

 istome thickened within ; external margin unreflected, arcuate; 

 columellar margin dilated, adnate, usually margined with black; 

 parietal margin wanting. 



Length 0.85 in. (21 3-5 mill.); breadth 0.41 in. (10 2-5 mill.). 



Length of body whorl 0.56 in. (14 mill.). 



Length of a large specimen 1.06 in. (27 mill.); breadth 0.51 

 in. (13 mill.). 



Average weight 6.70 grains. 



Occasional Papers B. P. B. M., Vol. II, No. 3—4- 



