IJNIVALVES.-^HELIX. 123 



Those Helices which are ovate and imperforate or 

 iion-unibilicate, may be classed with the following spe- 

 cies, viz. Helix pupa. Helix barbara. Helix amarula or 

 the black spiny mitre from the Ganges, Helix stagnalis, 

 found in the still waters of Europe, and Helix fragilis, 

 palustris, &c. &c. &c. 



There are many of this genus which inhabit aquatic 

 plants in standing-waters, lakes, ponds, and ditches: 

 others are found on trees and shrubs in Asia, and in the 

 woods of Denmark, Sweden, and Germany; some fre- 

 quent the water-falls of Lombardy ; many harbour among 

 rotten wood ; others again are the produce of America, 

 Africa, India, Italy, Portugal, China, New Zealand, and 

 Otaheite; and many are found in, Britain, and on its 

 coasts, though they are mostly minute. 



UELIX,- Snail. 



A. Whorls with a car inated acute marfjiii. 



Scarabaeus {Cocheha/er) Exilis. 



*Lapicida(jRo67c S.) Vermiculata. 



Marginata. Candida. 



Cicatricosa. Spadicea. 



iEgophthalmos. Incarnata. 



Oculus-capri. Sericea. 



♦x'Vlbella. Crenulata. 



Maculata. *Planorbis. 



Albina. Complanata. 



Striatula. Ringens (Gr inner.) 



Algira. Sinuata. 



Lcucas. Lucerna (Lamp.) 

 La;vipcs. Lampas. 



