256 



BIRDS OF ILLINOIS. 



cases determine the species, U. arcticns being decidedly smaller; the two comparing 

 about as follows: 



*Or more. 



The Black-throated Looii is essentially ail Arctic bird, but is 

 said to be a very rare winter visitant to Lake Michigan, thus 

 doubtless occasionally occurring within the limits of Illinois. I 

 am not, however, able to cite any record of its actual occur- 

 rence, and Mr. Nelson mentions only specimens taken at Racine 

 and Milwaukee, Wisconsin. 



Its habits are essentially the same as those of the larger and 

 more common species (U. iinb</r}. 



Urinator lumme (Gunn.) 



BED THROATED LOON. 



Popular synonym. Red-throated Diver. 



Colymbus lumme GUNNEK. Trend. Selsk. Skr. i, 1761, pi. ii, fig. 2. BRUNN. Orn. Bor. 1761, 



39 (adult). 

 Urinator lumme STEJN. Proc. U. S. Nat. Mus. Vol. 5, 1882, 43. B. B. & K. Water B. N. 



Am. ii, 1884, 457 A. O. U. Check List. 1886. No. 11. RIDGW. Man. N. Am. B. 1887, 8. 

 Colymbus septentrionalis LINN. S. N. ed. 10, i, 1766, 220 (adult). Sw. & RICH. F. B.-A. ii.1831, 



476. NUTT. Man. ii, 1834, 519. AUD. Oru. Biog. iii, 1835, 20, pi. 202; Synop. 1839,351; 



B. Am, vii, 1844, 299. pi. 478. LAWK, in Baird's B. N. Am. 1858. 890. BAIED, Cat. 



N. Am. B. 1859, No. 701. CouES.Key, 1872, 335; Check List, 1873, No. 607; ed. 2, 1882, 



No. 844; B. N. W. 1874, 721. RIDGW. Nom. N. Am. B. 1881, No. 740. 

 Colymbus stellatus BRUNN. t. c. No. 130 (young). 

 Colymbus borealis BRUNN. t. c. No. 131. 

 Colymbus striatus GMEL. S. N. i,pt. ii, 1788, 586 (young). 

 Colymbus rufogularis MEYER, Tasch. Vog. Deutsch. ii, 453 (adult). 

 Colymbus microrhynchos BEEHM, Naum. v, 1855, 300. 



HAB. Northern parts of the northern hemisphere, breeding from Labrador and Mani- 

 toba northward. South, in winter, entirely across the United States. 



SP. CHAK. Adult, summer plumage: Head and neck soft velvety cinereous, the 

 crown streaked with dusky; nape dusky, streaked with white; a longitudinal, wedge- 

 shaped patch of rich chestnut covering the fore-neck, the lower, truncated, edge adjoining 

 the white of the chest, the upper point reaching to the lower part of the throat. Upper 

 parts dusky slate, more or less speckled with white. Lower parts entirely pure white, 

 except along the sides, beneath the wings, and on the crissum, where more or less mixed 

 with slate-color. Bill deep black, the extreme point yellowish, and the culmen sometimes 

 bluish; iris carmine; "tarsi and toes bluish white, each joint of the latter, and the whole of 



