A Revised List of Cincinnati Birds. 23 



20. PoEZANA JAMAiCEKSis, Cassin. — Little Black Bail. — Partially 

 identified at Madisonville. 



21. Chaulelasmus steepekl'S, Gray. — Gadwall Duck. — " Breeds at 

 St. Mary's Reservoir" (BuryJ. 



22. Laeds maeinus, Linnaeus. — Great Black-hacked Gull. 



23. Laeds ateicilla, Linnaeus. — Laughing Gull. 



24. Steena anglioa, Montague. — Oull-hilled Tern. 



25. Stebna HiRUNDO, Linnaeus. — Common Tern; Sea Swallow. 



26. PoDiOEPS griseigena, imr. holbolli, Coues. — Red-necked Grebe. 

 Note. — Podiceps cristatus, Latliam, has heretofore been included in 



various standard works as a bird of general distribution in North 

 America ; according to Dr. Brewer, however, there is " no authentic 

 record of the capture of a single specimen in America,'' and it is there- 

 fore dropped from the list of North American Birds. — See his article 

 in Bulletin Wuttall Or/i. Club for April, 1878, p. 52. 



SUMMAET. 



The two hundred and fifty-six identified species may be approximately 

 divided as follows: 



Constant residents, ........ 27 



Summer residents, ........ 62 



Winter visitants, ......... 10 



Eegular migrants, ........ 82 



Irregular migrants, ........ 37 



Casual visitants, ........ 31 



Species that have disappeared within forty years, ... 7 



Total, 256 



Adding the twenty-six un-identified species to the aggregate number 

 of irregular and casual visitants^ where they would properly belong if 

 identified, we have a total of ninety-four, or exactly one-third of the 

 total number of species in both lists;, apparently a remarkable pro- 

 portion of "casuals," and one probably without a parallel in anjr other 

 class of vertebrates. It is not by any means peculiar, however, to this 

 locality or State, as may be seen by consulting the List of Mas- 

 sachusetts Birds by AUen,^ or that of the Birds of Connecticut by 

 Merriam,^ and other North American Lists, in which about the 



1 A List of the Birds of Massachusetts, with Annotations, by J. A. Allen. Bulletin of the 

 Emex Institute, Vol. X., pp. 3-37; April, 1878. 



2 A Review of the Birds of Connecticut, with Remarks on their Habits, by C. Hart. 

 Merriam- Trans. Oonn. Academy, Vol. IV., 1877. 



