430 NATATORES. MERGULUS. ROTCHIS, 



COMMON ROTCHE. 



MERGULUS MELANOLEUCOS, Ray. 



PLATE LXXXI. 



Mergulus melanoleucos, Ran Syn. 125. A Steph. Shaw's Zool. 13. 34. 



pi. 3 Flem. Br. Anim. 1. 135. No. 2 16. 



Alca Alle, Linn. Syst. 1. 211. 5 Gmel. Syst. 1. 554. Lath. Ind. Orn. 2. 



795. sp. 10. 



Uria minor, Briss. Orn. 6. 73. 2. 

 Uria Alle, Temm. Man. d'Ornith. 2. 928. Faun. Amer. Boreal. 2. 497. 



No. 238. 



Le Petit Guillemot femelle, Buff. PI. Enl. 917, but not his description. 

 Guillemot nain, Temm. Man. d'Orn. 2. 928. Lesson, Man. d'Orn. 2. 360. 

 Der Kleine Alk, Bechst. Naturg. Deut. 4. 732 Meyer, Tasschenb. Deut. 



2. 44:i 



Small Black and White Diver, Will (Angl.)343. Edwards' Glean, t. 91. 

 Little Auk, Br. Zool. 2- 517. No. 233 Arct. Zool. 2. 429 Lath. Syn. 5. 



327. 11. Lein'*Br. Birds, 6. 223 JV/onJ. Orn. Diet. & Sup Bewick's 



Br. Birds, ed. 1826. pt. 408 Wils. Amer. Orn. 9. 94. pi. 74. f.5 Low's 



Faun. Oread. 103. 



Little Guillemot, Faun. Amer. Boreal. 4. 479 No. 238. 

 Common Sea Dove, Shaw's Zool. 13. 34 pi. 3. 

 Common Eotehe, Flem. Br. Anhn. 1. 135. No. 216. 



IN the various accounts of voyages in the northern seas, 

 this bird is mentioned as of very frequent occurrence, under 

 the name of the Rotche ; which appellative I have therefore 

 adopted, in imitation of Dr FLEMING, as the one by which 

 it is most generally known. It extends to very high lati- 

 Periodical tudes, and abounds during summer in all the open spots of 

 visitant. wa f- er am ongst the floes and ice-fields of those desolate re- 

 gions; where, however, it meets with a never- failing supply 

 Food. of the crustaceous and other small marine animals on which 

 it subsists. Around the coasts of Greenland and Spitzber- 

 gen it is very numerous during the breeding season, deposit- 

 Incuba- ing its solitary egg, of a pale bluish-green colour, upon the 

 tion, &c. j ec |g es o f precipitous rocks, from whence it can easily either 

 throw itself into the water, or take wing. It is also to be 

 found very plentifully during the summer in the arctic seas 

 of the American Continent, but migrates in winter to the 



