140 Beautiful SUls. 



up sliop till tlio return of solar heat. Wlien in 

 motion it carries its sliell balanced obliquely on its 

 bact, and keeps advancing and retracting its ten- 

 tacles. It is quite as destructive to vegetation as 

 the slug. 



We should have enough to do to describe all 

 the species and varieties, for of Helices alone ^Y0 



C 



6-6. 



9-10. 11-12. 13-U. 



6-G. Yitrina pclluclcla ^thc Transparent Glass Bubble Shell), 

 Mailer. 7-8. Zonites cellarius (the Cellar Snail), Hid. 

 9-10. Z. alliarius (the Garlic Snail), Hid. 11-12. Z. 

 nitidulus (the Dull Snail), Bra^arnaud. 13-14. Z. purus 

 (the Delicate Snail), Alder. 



may count at least forty. The Vitrina pcUuclda, 

 or transparent glassy snail (Figs. 5 and G), found 

 among the putrescent leaves, moss, and decaying 

 wood of plantations and hedge-bottoms, and also 

 under stones, is an exceedingly thin, transparent, 

 glossy, smooth, and fragile watery-green shell, 

 through which the mantle of the animal within is 

 reflected. It is elliptical in form, with three and a 



