CHARACTERS OF HiEMATOTHERMA. 



Order I. NATATOEES. 



Swimming Birds. Toes united by a membrane, fig. 2. Legs 

 placed behind the equilibrium, and body covered with a thick coat 

 of down beneath the feathers. 



Fam. 1. BrevipennatcB. Ex. Penguin, Auk, Guillemot, Grebe. 



2. LoiKjipennatcB. Ex. Skimmer, Tern, Mew, Gull, Petrel, 



Albatross. 



3. Totipalmat(B. Ex. Pelican, Gannet, Cormorant, An- 



hinga. Frigate Bird, Tropic Bird. 



4. Lamellirostratoi. Ex. Duck, Goose, Swan, Flamingo. 



Webbed foot of Pelican. 



Head and wading leg of the Curlew. 



Order II. GKALLATORES. 



Wading Birds. Legs long, naked from above the distal extre- 

 mity of the tibia downwards, fig. 4. 



Fam. L Macrodactyli. Ex. Coot, Rail, Crake, Screamer, 

 Jacana. 



2. Cidtrirostres. Ex. Boatbill, Crane, Heron, Ibis, Stork, 



Tantalus, Spoonbill. 



3. Longirostres. Ex. Gambet, Avocet, Snipe, Ruff, Turn- 



stone, Sandpiper, Godwit, Curlew, fig. 3. 



4. Pressirostrcs. Ex. Oystercatcher, Thicknee, Plover, 



Lapwing, Bustard, Courser. 



