00 MALACOZOA. GASTEROPODA. PULMOBRANCHIATA. 



Not uncommon among herbage close to the foot of walls, 

 or mider stones. First found by me, on the 21st of Jmie, 

 1842, along the north side of the south wall of Seaton Park, 

 where it occurs rather plentifully, along with Zonites cellarius, 

 Zonites rotundatus. Pupa umbilicata, and other species. 

 About Slains Castle, and the Bullers of Buchan, 5th August, 

 1842. 



It extends from the sea-coast far into the interior, being 

 found, for example, among the ruins of Dunottar Castle, and 

 among those of Corse Castle. 



Helix nitida. Muller, Yerm. Terrestr. et Aquat. ii. 32. — Helix 

 nitidula. Drap. Moll. Terr.etFluv. 117. — Helix nilidula. Shepp. 

 Linn. Trans, xiv. IGO. — Helix nitidula. Alder. Mag. Zool. and 

 Bot. ii. 107. — Helix nitidula. Lamk. Syst. Ed. 2. riii. 87. — 

 Zonites nitidiilus. Gray's Turton, 1 73. 



4. Zenites lucidus. Lucid Zone^Snail. 



Shell depressed, considerably convex above, rather strongly 

 striato-rugose, transparent, glossy above, shining beneath, dull 

 greyish-brown, of five whorls, which are convex and inflexed 

 at the suture-margin, and of which the last is destitute of any 

 whiteness or opacity beneath ; the umbilicus large and deep ; 

 the aperture oblique, roundish, subelliptical, longer than broad. 

 Diameter three-twelfths of an inch, height nearly half the 

 breadth. 



This species is very nearly alHed to Zonites nitidulus, 

 from which it differs in having the lustre not waxen, the 

 colour with less red, the convexity above rather greater, the 

 suture-margins convex and inflexed, the strife stronger and 

 more regular, the umbilicus wider. When the animal has not 

 been withdrawn, the shell is of a dark chocolate-broAvn. 



The animal has the foot dull grey, the tentacula and neck 

 greyish-brown, the body dusky. The eggs are elliptical, with 

 a very firm white calcareous shell. One in my possession was 

 deposited by the animal in the vial in which I was carrying 

 it home. 



First found by me, on the 5th of July, 1842, in Seaton 

 Haugh, and at Don Bridge ; by Miss IVIacgillivray, in the 

 Den of Auchmedden, in September. 



It inhabits moist places among the herbage. 



Helix lucida. Drap. Moll. 103. PI. 8. f. 11, 12.— Helix lucida. 

 Gray's Turton, 174. PI. 4. f. 38.— Helix nitida. Alder. Mag. Zool. 

 and "Bot. ii. 107. 



