ORDER PALMIPEDES. 555 



Marbled Guillemot, Penn. U. M armor ata, Lath. 

 Syn. t. 96. North America. 



Dusky ; all the under parts lunated or marbled with 

 white markings ; coverts, white tipt. Arctic Circle. 



Mandfs Guillemot. Uria Mandtii, Licht. 



Very like U. Grylle, but secondaries much larger, 

 and white tipt ; bill, more slender ; tail, tarsus, and 

 toes, larger. Length, twelve and a-half inches. Spitz- 

 bergen. Dr. Mandt. 



We may, moreover, separate from the Guillemots, 



The Cephus,* vulgarly called Greenland Divers , 



Whose bill is shorter, the back more arched, and 

 without a slope. The symphysis of their lower 

 mandible is extremely short. Their wings, more- 

 over, are stronger, and the membranes of their feet, 

 emarginated. 



Little Grebe, Col. Minor, Gm. Enl. 917- Mergulus 

 Alle, VieiU. Gal. 295. Br. Zool. pi. h. 4, f 1. 

 Edw. 91. Naum. 1st Ed. Q5, f. 102. 



Is the best known of the species ; of the size of a 

 large pigeon; is black above, and white underneath, 

 with a white stripe on the wing, like the guillemot. 

 Its bill is black, and the feet red. It inhabits the 



* Cephus is the name of a sea bird often mentioned by the Greeks, and 

 which appears to have been some species of petrel or gull. It has been 

 applied by McEriug, and afterwards by Pallas, to the Divers and Guillemots. 

 M. Vieillot has changed it into Mergulus. Gal. 295. 



