406 NATATORES. COLYMBUS. Diver 
position, and their notes, or rather screams, are loud and 
melancholy in tone. The species hitherto discovered are 
three, all belonging to the Northern Hemisphere, and inha- 
biting the arctic regions of both worlds. Their flesh is (as 
might be expected) very fishy, as well as hard and coarse- 
grained, and their skins thick and tough. With respect to 
tracheal organization, neither the Divers nor the Grebes pos- 
sess any peculiar enlargement or labyrinth. 
NORTHERN DIVER. 
CotymeBus @LacraLis, Linn. 
PLATE LXXVI. 
Colymbus glacialis, Linn. Syst. 1. 221. 5.—Gmel. Syst. 1. 588.—Lath. Ind. 
Orn. 2. 799. sp. 1.—Sabine, Frank. Jour. Ap. 703.—Shaw’s Zool. 12. 
233. pl. 61. young.—Flem. Br. Anim. 1. 132. sp. 211.—Faun. Amer. 
Boreal. 2. 474. No. 232. 
Mergus major nevius, Briss. Orn. 6. 120. 6. t. 11. f. 2. 
Colymbus maximus caudatus, Raii Syn 125. A. 4.—Will. 259. 
L’Imbrim ou Grand Plongeon, Buff: Ois. 8. 258. t- 22. —Id. Pl, Enl. 952. 
Plongeon Imbrim, Temm. Man. d’Ornith. 2. 910.—Lesson, Orn. Dict. 2. 
359. 
Eis 'Taucher, Bechst. Naturg. Neut. 4. 595. 
Greatest Speckled Diver or Loon, Aldin’s Br. Birds, 3. pl. 93. 
Northern Diver, Penn. Br. Zool. 2. 523. No. 237. pl. 84. f. 2.—Arct. 
Zool. 2. 439.—Lath, 6. 337.—Lewin’s Br. Birds, 6. pl. 226.—Mont. Orn. 
Dict. and Ap. to Sup.—Puit. Cat. Dorset, 17.—Bewick’s Br. Birds, ed. 
1626, p. t. 174—Wils. Amer. Orn. 9. 84. pl. 74. f. 3.—Zow’s Faun. 
Orcad. 108. 
Loon, Rennie’s Mont. Orn. Dict. 307. 
Colymbus Immer, Linn. Syst. 1. 222. 6.—Gmel. Syst. 1. 588.—Lath. 
Ind. Orn. 800. sp. 2. 
Mergus major, Briss. 6. 105. 1. t. 10. f. 1. 
Colymbus maximus Gesneri, Raii Syn. 126. 8.— Will. 260. 
Young. Le Grand Plongeon, Buff: Ois. 8. 251. 
Imber Diver, Penn. Br. Zool. 2. 524. No. 238. pl. 84. f—Arct. Zool. 2. 
440.—Lath. Syn. 6. 340.—Lewin’s Br. Birds. 6. pl. 227.—Mont. Orn. 
Dict. 1. and Sup. 
The Immer, Zow’s Faun. Orcad. 110. 
Provincrat—Great Doucker, Herdsman of the Sea, Ember Goose, 
Gunner, Loon, Naak. 
Periodical | Upon the Northumbrian and other northern coasts of 
a ia England, and in the friths and bays of Scotland, and its isles, 
the Northern Diver, under its stages of immaturity, is a 
