No. 500] NOTES AND LITERATURE 



I 1 7 



Chicago, whriv it iinw is. In ls M c,; [H . published ;i description 



shoe Bend" among which was the form Lysorophus tricaiinatus, 

 based on three vertebrae, which Cope took to be of reptilian 

 nature. Prom the fact that the bones were very similar to some 

 found in the Texas Permian. Cope concluded that the Illinois 

 depcsit was likewise Permian; and such it is usually regarded. 



From the discovery of a similar deposit in Pennsylvania by 

 Raymond 1 it seems more probable that the deposit in Illinois is 



of determination, though Dr. Stuart Weller, who visited the 

 locality, was of the opinion that the circumstantial evidence was 

 very strong in favor of its being upper Pennsylvania!!. Since 



natus type from the Permian of Texas. Last June Case 2 de- 

 scribed the skull of the Lysorophus tricarinatus and came to the 

 conclusion that the form was an amphibian. Later in the 



Williston 4 appeared on the same subjeet. P Broili emphatically 

 denied the amphibian nature of Lysorophus and Williston 

 proved conclusively that the form is not only an amphibian, but 

 is even allied to the modern Urodela. Broili reaches the most 

 astonishing conclusion that Lysorophus "erscheint daher nach 

 den in der Sj^stematik geltenden Grundsiitzen fiir richtiger, . . . 

 zu den Lacertiliern zu stellen." 



