DIVER. NATATORES. COLYMBUS. 411 



BLACK-THROATED DIVER. 



COLYMBUS ARCTICUS, Linn. 

 PLATE LXXVII. 



Colymbus arcticus, Linn. Syst. 1. 221. 4 Gmel. Syst. 1. 587 Raii Syn. 



125. 7 Will. 259. t. 62 Lath. Ind. Orn. 2. 800. sp. 4 Shaw's ZooL 



12. 236. Flem. Br. Anira. 1. 133. sp. 212. Faun. Amer. Boreal. 2. 475. 



No. 233. 



Mergus guttere nigro, Briss. 6. 115. 4. 



Le Lumme ou Petit Plongeon de k Mer du Nord, Buff. Ois. 8. 261. 

 Plongeon Lumme, ou a Gorge noir, Temm. Man. d'Omith. 2. 913. 



Lesson, Man. d'Orn. 2. 359. 



Der Polar Taucher, Bechst. Naturg. Deut. 4. 600. 

 Black-throated Diver, Penn. Br. ZooL 527. No. 251. pi. 85 Arct. ZooL 



2. 466 Edward's Glean, t. 146 Lath. Syn. 6. 343. 4 Lewin's Br. 



Birds, 6. pi. 229. Mont. Orn. Diet. 1. Bewick's Br. Birds, ed. 1826, 



p. t. 181 Shaw's ZooL 12. 336., &c. 

 Lumme, Rennie's Mont. Orn. Diet. 310. 

 Lesser Imber, Bewick's Br. Birds, ed. 1826, p. t. 176, the young. 



PROVINCIAL Northern Doucker, Speckled Loon. 



THE Black-throated Diver, in all its states of plumage, is Periodical 

 of much less frequent occurrence than either the preceding 

 or the following species, nor does it extend its migration so 

 far to the south as they occasionally do, the instances of its 

 capturejbeyond the Scottish boundary being extremely rare. 

 It would appear, however, that individuals sometimes remain 

 over the summer, and probably even breed, on the lakes of 

 the Western and Northern Highlands, as I have seen a pair 

 upon Loch Awe towards the end of June, but did not suc- 

 ceed in detecting their place of nidification. By some natu- 

 ralists the Black and Red-throated Divers have been consi- 

 dered as one species, the former being the male, and the 

 latter the female bird; and even Dr FLEMING, in his History 

 of British Animals, seems to entertain a doubt on the sub- 

 ject, stating, in favour of such an opinion, that he once saw 

 a bird of each species together (or at least what he imagined 

 at a distance to be such), with a young one. The Red- 

 throated bird it appears was secured, and proved to be a 



