68 BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 



P. 606. List of recently identified fossil plants belonging to the United 

 States National Museum, with descriptions . of several new 

 species. [Compiled and prepared for publication by F. H. 

 Knowlton.] By Leo Lesquereux. 



pp. 21-46, 4 pis. 



P. 607. Descriptions of new and little known etheostomoids. By 

 Charles H. Gilbert. 



pp. 47-64. 



P. 608. A review of the North American species of the genera Lago- 

 don, Arckosargv^, and Dijplodus. By Carl H. Eigenmann 

 and Elizabeth G. Hughes. 



pp. 65-74. 



P. 609. Birds of Kauai Island, Hawaiian Archipelago, collected by 

 Mr. Valdemar Knudsen, with descriptions of new species. By 

 Leonhard Stejneger. 



pp. 75-102, 1 plate. 



P. 610. Notes on the Northern palsearctic bullfinches. By Leonhard 

 Stejneger. 



pp. 103-110. 



P. 611. Description of a new species of Porzana from Costa Rica. By 

 Eobert Ridgway. 



p. 111. 



P. 612. Notes on Ardea wuerdemunni Baird. By Robert Ridgway. 



pp. 112-116. 



P. 613. Description of a new species of OjyJiichthys ( OpMchthys retro- 

 pinnis), from Pensacola, Florida. By Carl H. Eigenmann. 



p. 116. 



P. 614. Contributions to the natural history of the Commander 

 Islands. No. 7. Revised and annotated catalogue of the 

 birds inhabiting the Commander Islands. By Leonhard 

 Stejneger. 



pp. 117-146, 8 pis. 



P. 615. On a new species of Tropidonotns found in Washington. By 

 E. D. Cope. 



p. 146. 



P. 616. Trogon avibigims breeding in Arizona. By Eobert Ridgway. 



p. 147. 



P. 617. Description of a new plumed partridge from Sonora. By 

 Robert Ridgway. 



pp. 148-160. 



P. 618. Description of a new genus of dendrocolaptine bird from the 

 Lower Amazon. By Robert Ridgway. 



p. 161. 



P. 619. Description of a new species of Phacellodomus from Vene- 

 zuela. By Robert Ridgway. 



p. 152. 



