MOLLUSCA. 



a The Egg. A Egg broken, showing the young animal, e Bulinus Ilsomastoma of the natural she. c Young one, just born, d Young one, half-grown. 



Their food is the tender leaves of plants, and it devours eagerly lettuces and cabbages, when they can 

 be had. During the day, they he in the shade semi-dormant, but move about towards evening, especially 

 if warm and moist, as they are evidently very fond of moisture They are hybernating animals, or torpid 

 during winter, and they deposit their eggs, in spring, about two inches below the earth's surface. 



We give cuts of three species of the Bulini, at various stages of their life, from the egg upwards. 



The Midas's Ear of the shell collectors is a good specimen of the genus Auricula. It lives in the neigh- 

 borhood of rivers, lakes and morasses. 



i/*~^ 



Auricula Midse.or Midas's Ear. 



Bulinus Rosaceus. a Adult animal, in motion, b A young shell, e Egg shell, just 

 broken, d Egg, unbroken. . a 



(370) 4 



