230 AVES: ANSEUES. — XXXV. 



351. ANAS Linnwus. (Lat., duck.) 

 «. ruliiieii lonpT tli.-xn niidillc tm' witliout claw. 



b. Speculum violet, bordered with black ; bill greenish-yellow ; L. more 

 than 20. 



GS8. A. boschas I.. Mai.i.akd Duck. Tamk Dick. ^ head 

 and iij)]ier m-ck rich glossy green, a white ring below; breast 

 piirpli.><h chestnut ; specuhim violet, with blacic and white before 

 and beliind it ; 9 duller, chiefly dull ochraceous, streaked with 

 dark brown. L. 24. W. 12. N. Am., abundant; commonest 

 westward. Original of the common domestic duck; various hy- 

 brids of this species with others are described, (jt'u.) (jdotrKas, 

 mallard.) 



6H!>. A. obscura (imelin. Black Duck. Size of mallard and 

 resembling the 9 • ^^"^ darker; both sexes entirely dusky, varied 

 with brown ; no decided white except under the wings. E. U. S., 

 common W. to Iowa. 



351b. QUERQUEDULA Stephens. 



c. Wing-covcrts in both sexes .>-k_v-hliie. the greater white tipped; scapu- 

 lars in i striped with blue and bulF; bill rather broad; head not 

 crested; speculum green. 



69<i. Q. discors (L.). Bi.uk-wingku Tkal. (J head and neck 

 blackish pliiinlieDiis, darkest on the crown ; a white crescent in 

 front of eye ; undt-r parts thickly spotted ; 9 dull streaky brown- 

 ish and buffy, known by the wings. L. IG. W. 7. T. 3. k. U. S., 

 W. to Rocky Mts., abundant. (Lat., discordant.) 



C9l. Q. cyanoptera (Vieillot). Cinnamo.n Teal. ^ chiefly 

 chestnut; top of head blackish; 9 dull and streaky. L. 17. W. 7^. 

 S. W., straying K. to 111. (Kvuvoi, blue ; irrtfiuv, wing.) 



351c. NETTION Kaup. 

 cc. Wing coverts leaden gray, without blue; bill very narrow. 

 G92. N. carolinense (dmelin). Gukkx-wingko Tkal. Head 

 and upper mck rich cliestuut in (J ; a green patch behind eye; 

 upper parts with wavings of black and white; white below; buffy 

 on breast, with dark spots; 9 different, known by the small size 

 and color of wing ; white crescent on sides in front of wings. 

 L. 15. W. 7,\. T. 3^. N. Am., common; one of the best of the 

 ducks as food. 



351 d. CHAUIiELASMUS Bonaparte. 



aa. Culmcn shorter than middle t<i<' wiiimtii claw. 



(/. Ijimell:e numerous, line, more than 30 visible from outside. 

 fi!i.T. C. BtreperuB (L.). (Jahwall. (Juay Dick. jJ barred, 

 black and white, middle wing coverts chestnut, greater coverts 

 black, speculum white ; 9 dusky and tawny with little chestnut, 



