286 COLYMBUS GLACIALIS. 



the intcrdigital membranes brownish-black, paler in the 

 middle. The head and neck are doc]) bluish-green, glossed 

 with purple. On the throat is a small transverse patch of 

 Avhite and black streaks, and farther down the neck on each 

 side is a large transverse patch of the same, the two patches 

 meeting behind, but separated before by a space an inch in 

 breadth. The lower parts are glossy white, with the excep- 

 tion of the sides of the lower part of the fore-neck, which are 

 striated with black, the sides of the body, which are greenish- 

 black, sprinkled with small round, white dots, the axillar 

 feathers, and large wing-coverts, which have a medial dusky 

 band, a narrow transverse band of dusky feathers, each having 

 two whitish spots across the hind part of the abdomen, and the 

 lower tail-coverts, which are also blackish-brown, and tipped 

 or spotted with white. The upper parts are glossy black, 

 beautifully variegated with white spots, arranged in trans- 

 verse bands, small and roundish toward the neck and on the 

 wings, larger and somewhat rectangular on the middle of the 

 back, on the scapulars largest and square, on the hind part of 

 the back very small and round. There are two of these spots 

 on each of the feathers toward the end, and the striated parts 

 of the neck have the feathers black, with two lateral white 

 spaces, on which the filaments are bent upwards, so that these 

 feathers are longitudinally concave. The alular feathers, 

 primary coverts, primary and secondary quills, are bro^^niish- 

 black, glossed with green, some of the inner secondaries with 

 two subterminal white spots. The tail is brownish-black. 



Length to end of tail 36 inches ; extent of wings 55 ; 

 wing from flexure 15f ; tail 3 ; bill along the ridge o-p-^ ; 

 along the edge of lower mandible 4^ ; its height at the base 

 1 ; tarsus S-^^ ; first toe -^, its claw -^ ; second toe 3-^, its 

 claw -^ ; third toe 4-^, its claw -j^,- ; fourth toe 4j\} its 

 claw -j^. 



Female in Summer. — The female resembles the male, 

 but is considerably smaller. The (Esophagus, fifteen inches 

 long, two inches wide, contracted within the thorax to an 

 inch and three-fourths ; the belt of pro ventricular glandules 

 two inches and two-twelfths. The stomach is two inches 



