308 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. IX. 



Anhinga. 



it to be common in the vicinity of Cairo in 1865, while Mr. Nelson 

 observed it in the same locality twenty years later." (Ridgway, 

 Orn. of Illinois, 1895, p. 209.) "Common in summer near Cairo, and 

 seen by Mr. Ridgway near Mt. Carmel." (Nelson, Birds N. E. 111., 

 1876, p. 151.) There is apparently no satisfactory record of its oc- 

 currence in northern Illinois or Wisconsin. A bird was described to 

 Mr. W. E. Snyder as having been shot in Dodge Co., Wisconsin, which 

 he believed to be this species. (Bull. Wis. Nat. Hist. Soc., April, 1892.) 



Family PH ALACROCORACID^. 



Cormorants. 



Cormorants are maritime birds, but often occur in numbers on 

 some of the larger inland lakes and rivers. They feed principally 

 upon fish and are usually found in colonies. About thirty species 

 are recognized, of which ten occur in North America. 



