AXJJ I'HESHWATEK, MOLLUSOA o*- DOKSETSUIUE. 117 



Hanley) ; on the sandbanks between Ferry Bridge and Port- 

 land (Damon) ; Worbarrow Bay ; Nothe, Weymouth; top of 

 cliffs, west side of Lulworth Cove ; Bindon Mills ( J.C.M.P.J. 



2. B. MOXTAXUS, Draparnaud, pi. 9. 



B. LACKHAMEXsis, F. and H., iv. p. 89, pi. cxxviii, fig. 6. 



Body rather large, thick, rounded in front, gradually decreasing 

 behind, dark-red or greyish-brown. 



Shell elonsjate-concoid, rather tumid, glossy, semi-transparent, 

 yellowish-brown, surface striated with extremely fine scarcely 

 perceptible lines, and intersected by transverse ones, giving the 

 surface a shagreened appearance ; whorls seven and a half, increas- 

 ing rapidly from the apex, the last occupies about half of the 

 shell ; suture well marked but shallow ; umbilicus nearly covered 

 by the reflection of the pillar lip ; spire tapering, blunt. L.0.65. 

 B.0.225. 



Hab. On trunks of trees, chiefly of beech, ash and horn- 

 beam, East Lulworth (Kendall). 



3. B. OBSCUKUS, Nuller, pi. 9. 



B. OBSCURUS, British Conch., vol. i., p. 237. 



HELIX OBSCURA, Pult. cat., Rack. ed. p. 55, pi. 19, fig. 17. 



Mont. Test. JBrit., p. 391, pi. 22, f. 5. 



Body short and thick, truncate in front, and pointed behind, brown 

 or reddish above, of a darker hue below. 



Shell oval-oblong, semi-transparent, slightly glossy, dark reddish- 

 brown, oblique, very line, unequal longitudinal striae; whorls six 

 and a half ; suture well marked ; mouth slightly oblique, oval, 

 interrupted by the antipenult whorl ; outer lip reflected, thickened, 

 white in the inside ; inner lip reflected upon the umbilicus, which 

 is much contracted. L.0.35. B.0.15. 



Var. alba. Shell white or colourless. 



Hab. On trunks of trees and among dead leaves in woods, 

 on walls, rocky places. Upon the highest top of Portland 

 Island, under stones (Montagu) -, cliffs about Secombe, Worth 

 Matravers -, Houghton ; Chapman's Pool, near Encombe 

 (J.C.M.P.). Var. --Lulworth (Gwyn Jeffreys,). 



