ABNOKMAL VEINS IN THE FROG. 329 



small, but normal, anastomoses of slender tributaries of the 

 external jugulars. A search for evidences of such disease failed 

 to discover any confirmation of that view, or any trace of past 

 inflammation, for all the surrounding organs and tissues were 

 quite normal, and the vein was not bound down by anything 

 suggestive of adhesions. I can only conclude, therefore, that 

 the condition is congenital, and the result of a process of de- 

 velopment not ordinarily found in the frog, similar in its nature 

 to that which leads to the formation of the innominate vein of 

 the higher mammals. 



In connection with this specimen, it seems to me to be clear 

 that the vein which is usually called ' innominate ' in the frog 

 is wrongly named, for it has certainly no relation, nor is equi- 

 valent in any way, to the vein so named in man and mammals. 

 To retain the name for it gives a false notion of its morphology. 

 It is better to give it some other designation, such as subscapulo- 

 jugular (from its two tributaries), as in the above description. 



