178 EVOLUTION AND DISEASE. 
on human anatomy the tragus is referred to as hzrcus 
or tragus (Latin Aircus = goat), on account of the hairs 
growing from it. 
It is unnecessary for me to enter into the question of 
the vestigial nature of man’s pinna; this has been again 
and again pointed out and admits of no doubt. Like 
Fic. 94.—A malformed auricle with a sinus in the helix. (After 
Paget.) 
vestigial organs in general it is very variable. The pinna 
may be absent, is often malformed, presents accessory 
parts and not unfrequently is occupied by some con- 
genital fistula and recesses. 
It is by no means uncommon to find in the helix, at the 
spot marked 4 in fig. 93, a small sinus, or recess, capable 
