1909. 



OLFACTORY ORGAN OF TELEOSTEAN FISHES. 



653 



the rosette is dilated to form two remarkably extensive accessory- 

 sacs similar to those of Trigla except in size. The lachrymal sac 



Text-fig. 213. 



ADD. M. 



Cyclopterus lumpus. 



A. Left olfactory organ, in position. 



B. Diagram of valvular posterior nostril. 



in particular is of enormous size, extending forward beneath the 

 head of the maxilla in front of the palatine, and backward along 



