148 Proceedings of the Biological Society of Washington. 



tinctly larger and less flattened ; paroccipital processes much shorter and 

 curved sharply forward. 



A further comparison of campioni with specimens probably intermediate 

 between luteola and warreni, makes it impossible to place the former 

 with such intergrades, since it is considerably lighter in color tlian other 

 Colorado forms. 



Note. — Marmota f. campioni is named in honor of Mr. John F. 

 Campion, President of the Colorado Museum of Natural History, whose 

 liberality and active interest have played so important a part in the 

 advancement of the natural sciences of the State. 



1 



