954 PR. W. G. RIDEWOOT) OK THE [NoV. 28, 



the characters of the efferent branchial system fail to afford any 

 convincing evidence as to the correctness or the reverse of such 

 association. Thus, while the Gradoids have one sharply marked type 

 of arterial arrangement, the Clupeoids another, and the Salmonoids 

 a third, in the disposition of the efferent vessels the Lophobranchii 

 resemble the first, the Ophidiidse the second, and the Scombridae the 

 last, — a most unnatural coupling of the families. It does not 

 appear, therefore, that the facts revealed by the present inquiry can 

 be applied with any probability of success to the interpretation of 

 the affinities of the family and larger groups of Teleostei. 



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