PLATE LXXXVII. 



Helix vlvipara, viviparous. Penn. Br. Zool. No. 132. tab. 84. 



fig' 132. 

 Cochlea fusco viridescens trifasciata. Vivipara. Da Costa. Br* 

 Conch, p. 81. sp. 44. 



This kind is found in abundance in all rivers and stagnant waters. 

 The river kind seems to vary in some respects from the other ; the 

 shells are more opake, and the colours are brighter than in those 

 which inhabit the stagnant water. 



The animal has a head not unlike that of a Bull, from which cir- 

 cumstance the Swedes, according to Linnaeus, call it the Bull-head, 

 and some French authors, limocon a tete cle been/, for the same 

 reason. It feeds on Duck Weed. 



