ANAS.] AVES NATATORES. 233 



back and flanks undulated with black : two middle tail- 

 feathers somewhat elongated, straight. 



Querquedula glocitans, Vigors in Linn. Trans, vol. xiv. p. 559. 

 Bimaculated Duck, Penn. Brit. Zool. vol. n. p. 602. pi. 100. 

 no. 287, Bew. Brit. Birds, vol. n. p. 362. Bimaculated Teal, 

 Selb. Ittust. vol. n. p. 321. pis. 55, & 55*. 



DIMENS. Length of the body, bill included, fifteen inches nine lines ; 

 of the bill (to the forehead) one inch and nine-tenths, (to the gape) two 

 inches and one-tenth ; of the tarsus one inch and six lines ; from the 

 carpus to the end of the wing eight inches and two-fifths. VIG. 



DESCRIPT. (Male.) Forehead, crown, and occiput, very deep reddish 

 brown, glossed with purplish black, passing, on the hinder part of the 

 neck, into deep violet purple : between the bill and the eye, and behind 

 the ear-coverts, two large irregular patches of chestnut-brown, margined 

 and varied with white : cheeks, and sides of the neck, glossy duck-green, 

 the rest of the upper neck, and throat, greenish black: front of the lower 

 neck, and sides of the breast, reddish brown, with oval black spots; 

 middle part of the breast pale reddish brown, spotted with black: ground- 

 colour of the back pale sienna-yellow, undulated with black lines ; scapu- 

 lars the same, tipped with glossy Scotch blue ; wing-coverts hair-brown, 

 the lower row tipped with pale wood-brown ; speculum dark green, glossed 

 with purple : upper and under tail-coverts greenish black, glossed with 

 purple : tail cuneiform, the two middle feathers black, narrow and acumi- 

 nated, considerably longer than the others, which are hair-brown, edged 

 with white : belly and abdomen yellowish white, with undulating black 

 lines, darkest and most distinct upon the flanks : bill blackish gray, pass- 

 ing towards the base and margins, into dirty orange-yellow : legs pale 

 orange. SELB. (Female.) Chin and throat pale buff; head and neck 

 the same, but spotted and streaked with black, the spots largest and most 

 distinct upon the crown ; lower neck, and sides of the breast, pale yel- 

 lowish brown, with blackish brown spots ; middle of the breast, and belly, 

 white; abdomen white, with faint hair-brown spots; flanks variegated 

 with yellowish brown and blackish brown : upper parts blackish brown, 

 the feathers deeply edged with reddish white and yellowish brown; lesser 

 wing-coverts hair-brown, the lower tier deeply tipped with pale reddish 

 brown : upper half of the speculum green, with purple reflections ; the 

 lower half velvet-black, with white tips to the feathers : quills and tail 

 hair-brown, the latter edged with white and reddish white : legs orange- 

 yellow. SELB. 



Very little is known of this extremely rare species, which was first 

 described by Pennant from a male specimen taken in a decoy in 1771. 

 Two other individuals, a male and female, occurred near Maldon in 

 Essex, in the Winter of 1812-13. These last, which are described in 

 the Linnsean Transactions by Mr Vigors, are now in the Museum of 

 the Zoological Society. Habits and nidification unknown. Stated by 

 Pallas to be a native of Siberia, frequenting Lake Baikal and the 

 River Lena. 



242. A. Boschas, Linn. {Mallard.) Head, and upper 

 part of the neck, deep green; below the green a white 

 collar : four middle tail-feathers (in the male) recurved. 



