BIRDS OF NORTH AMERICA, 745 
poe with variously colored ground, spotted and streaked with umber, 
rown, &c., 33 by 2. as ae 
Uria Vroue, Bonap. Syn. p. 424. Rich. § Swain. ii 477. Nutt. iis 626. Aud. iii. 
> 142; plate 2183 Syn. p. 350. 
482. Uria Grylle, Linn, — Black Guillemot. 
Bill, black; feet, vermilion; upper parts, black, tinged with green ; 
lower parts, brown ; patch on each wing, white. Plumage, white mn win- 
ter. Adult, 13%, 214. Habitat, from New York north: Eggs, three, 23 
by 18, white, blotched with dark purple. 
Uria Grylle, Bonap. Syn. p. 423. Mutt. ii. 523. Aud. iii. 1485 v. 627; plate 219; 
Syn. p. 350. Rich. & Swain. ii. 478. 
483. Uria Townsendii, 4ud.— Slender-billed Guillemot. 
Bill and claws, black; feet, yellow; upper parts, brownish black ; 
feathers of back margined with,light gray ; lower parts, band on nape and 
lower wing-coverts, grayish brown. Adult, 10. Habitat, coast near 
Columbia R:ver. : 
8 
FAMILY VI.—COLYMBID, Vigors. 
GENUS I.—COLYMBUS, Linn.— DIVER, or LOON. 
484. Colymbus glacialis, Lynn. — Common Loon, FFilson, p. 648, 
Colymbus glacialis, Bonap. Syn. p. 420. Rich. §& Swain. ii, 474, Nutt. ii. 513 
4ud. iv. 43; plute 300; Syw. p. 353. 
485. Celymbus arcticus, Linn. — Black-throated Diver. 
Bill, black ; feet, grayish blue ; edge of tarsus, and part of webs, livid 
flesh color; fore part and sides of head, throat, and sides of neck, light 
bluish gray ; fore part and sides of head, darker ; upper parts, glossy bluish 
black, tinged with green anteriorly, and brown posteriorly ; two longitu- 
dinal bands of white bar; scapuiars, marked with square white spots; 
wing-coverts, with roundish spots of same; tail, blackish brown; fore 
neck, purplish black, ending with a ‘transverse band of linear white spots; 
beyond the sides of neck, blackish brown, with longitudinal white streaks ; 
lower’ part of neck streaked with dusky ‘and white; lower parts, pure 
white except a dusky band on sides. Male, 29, 394. Habitat, interior 
and along the coast. Eggs, three, 3 by 2, chocolate, tinged with olive and 
spotted with dark umber and black. 
Colymbus arcticus, Bonap, Syn. p. 429, Rich. § Swain. ii. 475. Mutt. ii, 517, 
vlud. iv. 345; plate 346; Syn. p. 354. i 
* 
486. Colymbus septentrionalis, Linn. — Red-throated Diver. 
Bill, bluish black ; fect, brownish black; anterior of tarsus and webs, 
flesh color; fore part and sides of head, throat, and sides of neck, bluish 
gray; fore part of neck, rich brownish red ; hind part of head and neck, 
longitudinally streaked with greenish black and pure white; upper parts, 
brownish black, tinged with green, mottled with white; lower parts, 
white, excepting sides, where grayish brown is intermingled. Male, 
19, 25. Female, 18, 24. Habitat, from Maryland north. Nests near 
edges of fresh water. Eggs, three, 3 by 1%, deep clive brown, marked 
with darker dull brown. 
Colymbus septentrionalis, Bonap, Syn. p. 421. Rick. & Swain. ii, 476. Mutt. ii 
519. Aud. a3 20; v. 625; plate 202; Syn. p. 854. 
GC 
