490 



LAMELLIUOSTUAL SWIMMKKS — ANSKUES. 



tl 



A. boBOhas. Adult male in winhr: Four inidiUc tail-i'uuthers Htroiigly recurved orcurluil ; 

 liuml 1111(1 neck brilliant velvety green ; jiij,'uluin rich chestnut, with u white collar between 

 it and the 1,'reen ol' the neck ; siieculuni rich metallic violet, bounded anteriorly by a 

 black bar, this ju'eceded by a while one, and posteriorly by a black Hubteriniiial and while 

 tenuinal band. Adult fiumk and mak in brccdimj season : Wings as in the above ; else- 

 where, variegated with dusky and ochraceous, the liirnier on the centres of the feiitherH, 

 and predominating on the upper parts, the latter on the borders, and prevailing beneath. 

 Wing, l().2r)-12.()(l inches ; culmen, 2.(H»-2.4(» ; tarsus, 1. 5(1-1. ao; middle toe, l.!K)-2.15. 

 llah. AVholi^ noithern hemisphere. 



6. Sexes alike, at all ages and seasons ; no white on the outer surface of the wing. 



2. A. obBOura. Prevailing color dusky, the feathers bordered with dull ochraceous ; head 



and neck dull bull", everywhere streaked with dusky ; no black at base of the bill ; 

 speculum usually d(i|i violet. AVing, 1()..5()-11.,')(> inches ; culmen, 2, 0()-2.3o ; tarsus, 

 I.7()-I.8(); middle toe, l.»()-2.1(). Hah. Eastern North America. 



3. A. fulvigula. Prevailing color ochraceous, the feathers marked centrally with dusky ; 



entire chin and throat immaculate creamy ochraceous or bulf ; base of the maxilla, espe- 

 cially below, black ; speculum usually green. Wing, 10, 00-10. 50 inches; culmen, 2.05- 

 2.35; tarsus, 1.70-1.80; middle toe, 1. 00-2. 00. Ilab. Florida. 

 I. Size small (wing, 8.50). 



4. A. Aberti ' 9 ■ Prevailing color ochraceous, spotted above and streaked beneath with 



1 Anas AnKini, HiixiWAV. 



1 Amis obscurii, l.Awa. Mcin. Rcstoii Soc. II. pt. iii. no. ii. 1874, 314 (Tcplc, W. Mexico). 

 Anna Aberti, Hinow. Proc. U. S. Nnt. Mas. Vol. I. 1878, 2.')0 (Mazatlnn). 



Sp. Char. Adult fcnwh : Size of Qucrquednia discws and cyanoptcra, but in coloration closely resem- 

 bling A . fuhirjula. Prevailing color oclmiccous-buff, but this cvciywhere relieved liy brownish-black spots 

 or streaks. Head, neck, iiml lower pait-s streaked, the streaks finest on the neck and sides of tlic head, 

 Inwuleston thejuguluni and crissuni, which is .soiiK'what tinged with rusty, and assuming the form of 

 oblong spots on the abdomen, thigh.s, and anal region ; throat iininaculate. Hack, scaindars, and rump 

 with the blackish predominating ; the feathers bordeivd witli ocliiaceous ; those of the back and the sciip- 

 ulai-s with inegulnr indentations and occasional bars of the same. Lesser wing-coveits brownish slate, 

 bordered with dull earthy brown ; middle coverts with their exposed portion velvety black, fcaming a 

 distinct bar. Secondaries widely tijipi'd with pure white (forining a consiiicuous band alwut .3,') of an inch 

 wide), this preceded by a velvety black bar of about e(pial width, the basal half or more (of the exposed 



