316 COMPARATIVE ZOOLOGY. 
Fig. 296.—Loon (Colymbus torquatus). North America. 
land, to stand nearly bolt upright. They are better fitted 
for diving than for flight or even swimming. They be- 
long to the high latitudes, living on Fishes mainly, and are 
represented by the Penguins, Auks, Loons, and Grebes. 
2. Longipennes, or Gulls.—Distinguished by their long, 
pointed wings, usually long tail, and by great powers of 
flight. They are all carnivorous. Such are the Gulls and 
