Class II. NORTHERN DIVER. 165 



GENUS XIX. DIVER. 



Bill strong, strait, pointed. Upper mandible 



longest; edges of each bending in. 

 Nostrils linear. 



Tongue pointed, long, serrated near the base. 

 Legs thin and flat. 

 Toes, exterior the longest; back toe joined to 



the interior by a small membrane. 

 Tail short, consisting of twenty feathers. 



Colymbus glacialis. C. capite Le grand Plongeon tachete. 1. North* 



colloque nigro-violaceo, fas- Brisson av. v\. 120. Tab. II. ERN. 



cia gulae cervicisque alba in- Jig. 1. Hist, d'ois. viii. 258. 



terrupta. Lath. Ind. orn. PL Enl, 952. 



799. id. Syn. vi. 337. Colymbus glacialis. Gin. Lin. 



Clusius's. Wil. orn. 342. 588. 



Rail Syn. av. 125. JVoroegw Brusen. Groenlandis 



Mergus maximus Farrensis, Tiulik. Bmnnich, orn. 134. 



sive Arcticus. Clusii exot. Grosse Halb-Ente, Meer- 



102. Noering. Frisch, ii. 185. A. 



Colymbus maximus stellatus Br. Zool. 13Q. K. 2. Arct. 



nostras. Sib. hist. Scot. 20. Zool. ii. 232. 



Tab. 15. 



xHE length of this species is three feet five Descrie- 

 inches ; its breadth four feet eight. The bill to 

 the corners of the mouth is four inches long, black 

 and strongly formed. The head and neck are 

 of a deep black; the hind part of the latter is 



