ACHATINA. 159 



150.; Dilhoi/n, p. 652. — Helix octona. Gmel S. N. i. 3653. 

 — Cionella Acicula. Jeffreys^ Linn. Trans, xvi. 348. — 

 Bulimus (Polyphemus) Acicula. Charpent. — Helix Acicula. 

 Stnder, in Coxes Travels. — Helix (Cochlicopa) Acicula. 

 Fer. Prod. 371. — Bulimus Acicula. Hartm. N. Alpina, i. 

 222. — Acicula eburnea. Risso, E. M. iv. 81. — Columna 

 Acicula. Jans, Cat. 4. — Styloides Acicula. Fitz. Syst. 

 105. — Acicula Acicula. Beck, hid. 79. — Polyphemus 

 Acicula. Villa, Syst. 20. — Cecilioides Acicula. Beck, 122. 

 (1848). — Cfficilianella terrestris, C. anglica, C. Lievillii. 

 Bourg. Bev. and Mag. Zool. Aug. 1856, 378. — Buccinum 

 longiusculum. Walker, T. M. R. f. 60. — Jaminia longius- 

 cula. Brown, III. Conch. 



Among roots of grass and under moss. Sub- 

 terraneous. 



Animal pellucid white, granulately striated ; ten- 

 tacula retractile, cylindrical, upper pair longest, gra- 

 nular, not thickened at the top, smooth, convexly 

 truncated, without any black spot (eyes) ; lower pair 

 opposite the angles of the mouth ; foot compressed, 

 pointed behind ; breathing-hole large, rounded, in 

 the middle of the outer lip of the shell. 



Shell not a quarter of an inch long, taper ; aper- 

 ture oval-oblong, appearing as if cut off at the base, 

 giving the end of the pillar the resemblance of a 

 tooth ; the outer margin thin, not reflected, nor 

 forming an umbilicus. 



This common species was first noticed as British 

 by Mr. Boys (fig. 61.) ; and his figure 89. appears to 

 represent the young shell. It is very common, six or 

 eight inches deep in the ground, in Yorkshire, on the 

 tops of gravel pits, and in Saxon coflSns. 



The animal, from the transparency of the shell, 

 may be seen to dilate and contract its respiratory 

 cavity through the shell. This motion has been 



