124 THE LAND AND FRESHWATER MOLLUSCA OF DORSETSHIRE. 



2. c. LUBRICA, Muller, pi. 10. 



HELIX LUBRICA, Pult. cat.. Rack ed., p 55, pi. 21, f. 18. 

 ZUA LUBRICA, ^! awrf H., p. 125, pi. cxxv., f. 8. 



B. Mouth destitute of teeth or folds; outer lip entire. 



Body broad and rounded in front, gradually narrowing and very 

 pointed behind. 



Shell subcylindrical, slightly ventricose, thin, transparent, very 

 glossy, light vellowish-brown, with oblique, fine, longitudinal strise, 

 scarcely visible even to the naked eye ; whorls five or five-and-a-half, 

 gradually increasing in size, the last occupying about one-half ot the 

 shell; spire conical, roundel at the point; suture well marked, with 

 a transversely wrinkled border; mouth oblique ; outer lip interrupted, 

 with a broad inside rib, which is usually reddish-brown, or flesh- 

 colour. L.0.25. B.0.85. 



Hab. Woods, under stones and logs of wood, among moss, 

 and dead leaves. Generally distributed. Moss, Bryanston ; 

 Clenston wood ; Smedmore ; Quaternary tufaceous deposit, 

 Blashenwell (J.C.M.P.). 



Genus XI.ACHATINA, Lamarck. 



Shell long and slender, cylindrical, thin, glossy, smooth ; spire 

 long ; mouth without teeth or folds, notched and nearly truncate at 

 the base ; umbilicus wanting. 



ACHATINA ACICULA, Mutter, pi. 10. 

 Robinson's Pur beck, p. 178. 

 Body transparent, white. 



Shell spindle-shaped, slightly attenuated below, and gradually 

 tapering towards the apex, thin, shining and polished, ivory-white, 

 showing under the microscope beautiful delicate striae; -whorls fi< e- 

 and-a half, scarcely convex, increasing rapidly, the last occupying 

 about one-half of the shell ; spire blunt ; suture rather deep, oblique, 

 often appearing marsjinated on the under side, on account of the 

 transparency of the shell ; mouth oblique, pear-shaped, angu- 

 lated above,wi(ier and rounded below,contracted by the penultimate 

 whorl; pillar-lip reflected, with a deep notch at its base : outer-lip 

 thin and flexuous. L.O.I 75. B.0.04. 



Hab. Under stones and at the roots of trees, bushes, and 

 grass, usually some inches below the surface. At the base 

 of Nine-Barrow Down, where the chalk unites with the green- 

 sand (Smith^ ; Punfield Cliff, Swanage -, Quaternary 

 tufaceous deposit at Blashenwell, near Kingston, Purbeck 

 (J.C.M.P.). 



