106 



AVIFAUNA COLUMBIANA. 



w 



tmmWsw 



Fig. 04.— Canvas-back. 



■226. (204.) CEdemia perspicillata (Zinw.) Flem. Surf Scoter. 



These four Sea Ducks do not properly pertain to the fauna of the Dis- 

 trict, being marine species. They are all found, however, at the month 



Fig. 'Jo.— Head of female Velvet Scoter, uat. size. 



of the Potomac, and regularly ascend the river as far as salt water 

 reaches, though their appearance in District waters can only be rare 

 and casual. They are all to be seen in the market in the winter. Mr. 

 Palmer informs us of a specimen of the Velvet Scoter shot in this vi- 

 cinity in November, 1880, and brought to the Smithsonian to be mounted. 



