COLYMBUS GLACIALIS 
NOR THERN DIVER, 
Generic Charactee. 
Bill strong, straight, pointed ; edges of both mandibles 
inclining inwards, the upper mandible somewhat 
projecting ; nostrils linear. 
Tongue long, pointed, serrated on the sides near the 
root. 
Legs thin, compressed sideways. 
Toes four, the outer one longest ; the hind toe con- 
nected to the inner one by a small membrane. 
Tail short, consisting of twenty or more feathers, 
CoLYMBUS Glacialis; capite colloque nigro-viqlaceo, 
facio gulae cervicisque alba interrupta. 
Northern Diver. Head and neck violet-black, chin 
and upper part of the neck with a white 
interrupted band 
CoLYMBUs Glacialis. Lin. l.p. 221. GmeL 
Si/st. 2. p. 558. Ind. Orn. 2. p. 799. 
CoLYMBUS MAXIMUS CANDATUS. Rail Sytl. p. 125. 
CoLYMBUS MAXIMUS STELLATUS NOSTRAS. Sib. Scot. 
20. tab, 15. 
Mergus major n^vius. Briss. Av, v. 6. p, 120. 
6.^. 11./. 2, 
LImbrjm ou Granp P;.ongeon. Buff. Hist. d'Ois. 
V. 8. p. 258, t. 22. 
Plongeon Imbrim. Temm. Man. Orn. ed, 2. p. 910. 
Greatest Speckled Diver or Loon. Will. Orn. 
p. 342. 
