VESTIGIAL STRUCTURES. 85 
them soils the surrounding skin and draws attention 
to their existence. 
Cervical auricles have been studied in the goat. In 
1876 Heusinger mentioned the frequency with which 
pendulous tags of skin occur in the necks of pigs, 
Neatly 
a 
Fic. 43.—An Egyptian G ay Hircus thebaicus), with seivical 
auricles. 
goats, and sheep. Yet little has been done to support 
his observations. Asa matter of fact, these pendulous 
bodies are extremely common in the necks of goats ; 
few persons seem to notice them until their attention 
is particularly drawn to them. 
