274 



CHEMICAL SENSES 





Figure 4 Olfactory epithelium of Rhinobatus lentiginosus: round nucleus of olfactory 

 bipolar cell (B), oval nucleus of supporting cell (S). The apical dendrites of bipolar cells in 

 these fishes have a few villous extensions instead of cilia. The surfaces of the supporting 

 cells carry similar villi. These cells also bear motile cilia on their distal ends. From Reese 

 and Brightman (1970). 



