ZONITES. 171 



This exquisite little shell was first noticed as British 

 by Dr. Gray in the 'Medical Repository' for 1821. 



B. Shell conical, having a slight depression and perforation 

 instead of an umbilicus. 



9. Z. FUL'VUS*, Muller. 



Helix fulva, Mull. Verm. Hist. pt. ii. p. 56 ; F. & H. iv. p. 75, pi. 

 cxviii. f. 8, 9. 



BODY dark-grey or slate-colour, with very fine black 

 specks : tentacles very long ; bulbs globular : foot rounded in 

 front, pointed and keeled behind, having some scattered 

 milk-white specks on the sole or under part. 



SHELL pyramidal, thin, glossy and semitransparent, horn- 

 colour or tawny, finely but irregularly striate in the line of 

 growth, and marked spirally with close microscopical lines, 

 which are more distinct and regular at the base : epidermis 

 very thin: whorls 5J, cylindrical, increasing gradually in 

 size : periphery obtusely keeled : spire very prominent, but 

 blunt : suture deep : mouth semilunar, compressed and 

 narrow : outer lip curved, but not oblique, reflected on the 

 pillar : umbilicus consisting of a slight indentation, with 

 sometimes a small hole. L. 0*1. B. 0-1. 



Var. Mortoni. Shell of a paler colour, with the spire 

 more depressed and peripheral keel sharper. Helix Mortoni, 

 Jeffr. in Linn. Trans, xvi. p. 332. 



HABITAT : Under decayed wood, leaves, and stones in 

 shady woods and marshy places, from the Moray Firth 

 district to the South of England, as well as all over Ire- 

 land. Specimens collected in dry situations are much 

 larger than those which are found in wet moss. The 

 variety is from Somerset and North Hants. This species 

 is one of our upper tertiary fossils. Its foreign range 

 extends from Siberia to Sicily, as well as to the Azores. 

 According to Philippi, it is the same species as the Helix 



* Tawny. 



