122 HELICID^. 



of the genus ; and monstrosities are sometimes found 

 with the whorls reversed, and more or less produced. 



It is one of the most beautiful of our snails, and 

 extremely local. It is common in the south of 

 Europe and Northern Africa ; but it is not found in 

 the northern countries : Wales may be considered its 

 northern limit. 



Mr. Jeifreys believes the beautiful pink gloss ob- 

 served on the mouths of this and H. virgata to be 

 entirely owing to the action of, and exposure to, the 

 sun ; for, in the specimens found in more sheltered 

 situations, the colours and marking are much fainter, 

 and sometimes altogether wanting. (^Linn. Trans. 

 xvi. 334.) It most probably arises from the animal 

 being in better health in sunny places, as it is most 

 like the warmer climate in which they appear to de- 

 light, beyond the confines of which our specimens 

 are living. 



According to Montagu, it is one of our most rare 

 species. He only found it in one place, on the sand 

 to the west of Tenby, where it is confined to a small 

 spot. Mr. Racket has found it at St. Ives, in Corn- 

 wall. It has also been said to be found near Dublin. 



England is probably the northern limit of this 

 species, which is not found in Germany or Sweden. 



44. 11. Helix fasciolata. Black-tipped Snail. — 

 Shell flattish, yellowish, with brown inter- 

 rupted bands and spots, and strongly striated 

 concentrically ; umbilicus moderate ; mouth 

 white, (t. 4. f. 32.) 



Helix caperata. Montagu, T.B. p. 433. t. 11. f. 11. (1803) ; 

 Tnrtoii, Man. ed. 1. 42. f. 32.; Jeffreys, Linn. Trans, xvi. 



