112 Dr. Tate 07i the Blollusca of Alnwick. 



the spire very little raised ; colour dirty yellow or pale 

 horn ; glossy ; upper surface rather opaque, under sur- 

 face clouded with opaque white, especially about the 

 umbilicus ; smooth or slightly WTinkled ; whorls 5 to 

 bi ; umbilicus moderately large, scarcely exposing the 

 second whorl ; aperture obliquely crescent-shaped, 

 rather broader than high ; diameter 2-5ths to 2 an inch. 



3. Z. alliarius, Mdll. 



A widely-diffused shell, but not so common as the last, 

 and readily distinguished from it and the other species 

 of this genus, by the odour of garlic which the animal 

 emits when disturbed. It frequents the same habitats 

 as the last. Ratcheugh, &c. 



Shell flattened, with the spire very little raised ; colour 

 pale amber or horn ; transparent ; very shining ; around 

 the umbilicus there is a little opacity ; upper surface 

 smooth or but slightly wrinkled ; whorls 3i to 4 ; 

 umbilicus moderately large, scarcely exposing the 

 second whorl ; aperture crescent-shaped, not very 

 oblique, rather broader than high ; diameter l-5th to 

 i of an inch. 



4. Z. nitidulus, Drap. 



Not so frequent as either of the preceding, yet by no 

 means an uncommon shell. Under stones, about old 

 walls, among grass and moss in woods and hedgerows. 

 Ratcheugh, Hulne woods, &c. 



Shell flattened with the spire somewhat raised, (more so 

 than either of the preceding) ; colour, that of horn, and 

 a shade or two darker than that of Z. cellarius and 

 alliarius ; not shining, but dull and semi-transparent 

 above ; more transparent below, except about the 

 umbilicus, where there is a feint band of opaque white ; 

 upper surface irregularly wrinkled or striated ; the 

 striae interrupted by the sutures and not continued 

 from whorl to whorl ; whorls 42 with the suture well 

 defined ; umbilicus large, exposing the second whorl ; 

 aperture crescent-shaped, alittle oblique ; rather broad- 

 er than high ; diameter 3-8ths to 3-lOths of an inch. 



5. Z. radiatulus, Alder. 



There are several localities for this minute and well- 

 marked species around Alnwick. Its favourite habitat 

 is among the moss and grass in damp pastures, under 

 stones and among moss and grass in woods. Rat- 



