142 KEY TO THE WATER BIRDS OF FLORIDA. 
Famity URINATORID.X., Loons— DIvers. 
Urinator imber (foot ). Urinator lumme. 
Length, 31; Wing, 14; Tarsus, 3.35; Bill, 2.75. Urinator imber. 
Loon — Great Northern Diver. 
See page 187 
Length, 24; Wing, 10.75; Tarsus, 2.75; Bill, 2. Urinator lumme. 
Red-throated Loon. 
Red-throated Diver. 
See page 188 
