156 07'iginal Descriptio7is of Achatinella. 



270. Achatinella cylindrica Newcomb. 



A. cylindrica Newc. P. Zool. Soc. London, 1S53, p. 134, pi. xxii, fig. 11. 



Shell dextral, elongately cylindrical, tapering to a point at the 

 summit; whorls 7, slightly rounded; suture moderate; aperture 

 oblong-ovate; columella terminating in a flexuous tooth; surface 

 of shell longitudinally strongly striate, of a light horn color, en- 

 circled with numerous small bands. Long. 16/20, lat. 6/20 poll. 



This species, with the following, are found, like their nearest 

 analogues, on the ground, viz.: A. porphyrea and spirizona, which 

 latter species, by almost insensible gradations, passes into A. turri- 

 tella, a shell apparently of quite a different type. — Newc. 



Animal light gray, marbled with dusky triangular patches, 

 mantle light gray, tentacles dark, granulations strong. A dorsal 

 and two obscure lateral white lines extend from the head along the 

 animal. — Newc. 



Hab. Near Mt. Kaala. 



271. Achatinella porphyrea Newcomb. 



A. porphyrea Newc. P. Zool. Soc. London, 1853, p. 136, pi. xxii, fig. 16. 



Shell rather solid, acuminately conical ; whorls 7, subcari- 

 nated above, plano-convex ; suture deeply impressed ; aperture 

 subovate, contracted below; lip thin; columella short, terminating 

 in twisted plait; epidermis thin and black; striae longitudinal and 

 strong; color beneath epidermis of a leaden hue, with numerous 

 transverse brown lines encircling the shell. Long. 15/20, lat. 

 8/20 poll. 



This species belongs to the same group with A. spirizo7ia Fer., 

 A. cylindrica and A. intermedia Nob., but which are quite distinct 

 in specific charadters. They are all terrestrial, not arboreal spe- 

 cies. — Newc. 



Hab. Near Mt. Kaala. 



272. Achatinella grossa Pfeiffer. 



A. grossa Pfr. P. Zool. Soc. London, 1855, p. 204. 



A. testa imperforata, dextrorsa, conico-ovata, solida, subruditer striata, 

 castanea; spira ovato-conica, apice acuta, nigricante; sutura pallida crenu- 

 lata; anfr. 7, summis planis, Iffivigatis, sequentibus sensim convexioribus, 

 ultimo 2-5 longitudinis subaequante; apertura obliqua, sinuato-ovali, intus 

 albida; plica colum. laniinseformi, subtriangulari, fere transversa; perist. 

 recto, acuto, marginibus callo albido junctis, dextro intus sublabiato, colu- 

 mellari adnato. Long. 23, diam. 11 mill. 



Shell imperforate, dextral, conically ovate, solid, somewhat 

 roughly striated, chestnut; spire ovately conic, apex acute, black- 

 ish; suture pale, crenulate; whorls 7, the upper fiat, smooth, the 



