No. 506] 



NOTES AND LITERATURE 



1 23 



cephalus, which is possibly lemnospomlylous, occurs first in the 

 Vppcr Carboniferous. A close parallel of this is found in the 

 discovery of Kn,oi>s by Case^ in the l-pper Pennsylvania., of 

 Pennsylvania. The progress of discovery is thus forcing further 

 and further back into geological time the origin of the Amphihia. 

 We now know nearly all of the types of the so-called St ego- 



mantel. The report is a lengthy one and oc 

 pages, including lists of the vertebrates an< 

 occur in the "Gaskohle schichten." 



Bison occidentalis. — In the last issue of the 

 Science Bulletin Dr. C. E. McClung 1 has de 

 a mounted skeleton of Bison occidentalis. 



I'.-cn mounted by Mr. II. T. Marl in 

 the only mounted skeleton of a PL 

 men is further noteworthy becaus< 

 under the right scapula as if it had 

 before death. From his study of 

 McClung reaches the conclusion tin 

 a more cursorial type than is the mc 



Three years ago 

 discovered in the Tria.< 



strong enough to warrant 

 IH-IV, 1908. 

 Wress of Americanists, 1902. 



