MORPHOLOGY OF ANIMALS 

 A 



Fig. 25. Organs of Taste and Smell. A, Taste bud in epithelial layer. B, .Antennule of 

 Crayfish, au, auditory sac on basal joint; ex, exopodite ; en, endopodite. C, Portion of exopo- 

 dite bearing many hollow, olfactory hairs (<?). D, Olfactory hairs much enlarged, a, face 

 view; b, side view. (After Huxley). 



