616 



Mil. R. H. BURNE ON TdE ANATOMY OF fHE [May 25, 



(G. merlcmgus), the olfactory organ differs only in minute details 

 from that of the Haddock. For instance, in the Whiting the 

 nostrils are relatively further apai-t and smaller, and the flap 

 upon the hinder edge of the anterior nostril is not quite so high. 



Motella tricirrata. 



The olfactory organ, though formed upon the same plan as in 

 the above described Gadids, differs in the following particulars : — 

 The nostrils are relatively smaller, more widely separated and 

 situated nearer the extremity of the snout, the anterior being not 



Text-fig. 190. 



Motella tricirrata. 



A. Sliape and position of the olfactory chamber. 



B. Diagram of cross section of the rosette. 



far removed from the upper lip. The valvular posterior border 

 of the anterior nostril is modified to form a long tentacle, a 

 circumstance that no doubt partly explains the forward position 

 of the nostril. The olfactory chamber and rosette have a long 

 oval form in agreement with the greater distance between the 

 nostrils. The peripheral segments of the leaflets of the rosette 



