Obdeb ANSEBES. 



Genus DAFILA Stephens. 



B. 578. K. 605. C. 710. G. 285. U. 143. 



32. Dafila acuta (Linn.). Pintail. Migratory; common. Arrive the last of Feb- 

 ruary to first of March. 



Genus AIX Boie. 



B. 587. R. 613. C. 719. G. 291. U. 144. 



33. Aix sponsa (Linn.). Wood Duck. Summer resident; common. Arrive the 

 last of March to first of April. Begin laying the last of April. Nest in holes in 

 trees on or near the banks of streams, usually in a trough-like cavity of a large 

 broken limb, lined sparingly with grass, weeds or leaves, and a few feathers with 

 down. Eggs, six to fifteen; 2.00x1.50; cream to buff white, smoothly polished; in 

 form, elliptical to oval. 



Genus AYTHYA Boie. 



B. 591. R. 618. C. 723. G. 296. U. 146. 



34. Asrthya americana (Eyt.). Redhead. Migratory; common. Arrive the first 

 of March to middle of April. 



B. 592. R. 617. C. 724. G. 295. U. 147. 



35. Ay thy a vallisneria (Wils.). Canvas-back. Migratory; irregular; not un- 

 common. Arrive early in March. My notes show the capture of one February 

 22d. 



Subgenus FULIGULA Stephens. 



B. 588. R. 614. C. 720. G. 292. U. 148. 



36. Aythya marila nearctica Stejn. American Scaup Duck. Migratory; 

 rare. Arrive in March to first of April. 



B. 589. R. 615. C. 721. G. 293. U. 149. 



37. Asrthya afflnis (Eyt.). Lesser Scaup Duck. Migratory; quite common. 

 Arrive early in March to first of April. 



B. 590. R. 616. C. 722. G. 294. U. 150. 



38. Aythya collaris (Donov.). Ring-necked Duck. Migratory; common. Ar- 

 rive very early. My notes show their capture from February 9th to May 24th. 



Genus GLAUOIONETTA Stejnegeb. 



B. 593. R. 620. C. 725. G. 297. U. 151. 



39. Grlaucionetta clang-ula americana (Bonap.). American Golden-eye. 

 Mirgratory; rare. Begin to arrive about the middle of March; have seen them 

 as late as the last of April. 



Genus CHARITONE5TTA Stejnegeb. 



B. 595. R. 621. C. 727. G. 298. U. 153. 



40. Charitonetta albeola (Linn.). Bufiie-head. Migratory; irregular; at times 

 quite common. Arrive the last of February to first of April. 



