166 NOTES ON AUSONIA COCKSIL 



ill Mr. Couch's example, they are all of the same length and 

 stoutness ; besides which there is great disparity in their numbers, 

 and also in the colouring of the fin. 



5. The weights. 



6. The colours. The two fish were wholly unlike in this 

 respect ; for while Mr. Couch's was blue all over (like the Tunny 

 family generally), with exception of the fins, which were scarlet, 

 mine was scarlet throughout, on a rich grounding of silver ; the 

 only portions possessing a particle of that colour which was pre- 

 dominant in the other fish, being the fin membranes and the out- 

 ermost portion of the tail. 



In the face of these discrepancies I am forced to the conclusion 

 that these two fish are essentially distinct. In fact, so patent was 

 the difference, even to the men to whom the Falmouth example 

 belonged, that they were able, on being shown the two sketches 

 side by side, at once to select their own from Mr. Couch's example. 

 I have taken the liberty of enclosing a sketch of Mr. Couch's wood 

 engraving, a glance at which will suffice to establish the assertions 

 I have made. 



[The specimen of Ausonia, described Inj Dr. Bullmore, has been deposited 

 in the Museum of the Penzance Natural History and Antiquarian 

 Society.] 



