18 



Missouri river, in Dakota county, in May, 1869, and a specimen was 

 sent to -him, shot on the Platte river near Fremont, in May, 1873. A 

 third record is fom M. K. Barnum, of one shot at North Platte, Nov. 

 11, 1895. 



37. Stercorarius parasiticus (Linnaeus) — Parasitic Jaeger. 



A rare migrant. One record for Nebraska, a specimen having been 

 shot by August Eiche on Salt lake near Lincoln, Sept. 13, 1898, and 

 now in his collection. 



EXTKALIMITAL: The third member of this genus in North 

 America, 38. iS. longicaudus Vieillot, the Long-tailed Jaeger, also 

 rarely migrates through the interior, but has not been taken in 

 Nebraska as yet. 



Family LARID-SD — Gulls and Terns 



1. Bill with upper mandible strongly curved and hooked at tip, directed 

 forward in flight; tail generally even at tip, rarely slightly forked; 

 voice hoarse; (Subfamily Larinae — Gulls) (2) 



1. Bill with upper mandible slightly and evenly curved throughout, sharply 

 pointed and not hooked at tip, pointed downward in flight ; tail forked, 

 generally deeply so ; voice shrill; (Subfamily Sterninae — Terns). . .(11) 



2. Plumage without black, even on the primaries » (3) 



2. Plumage with more or less black, at least on the primaries (4) 



3. Bill over 2 inches long and wing over 16 J inches long. . . Glaucous Gull. 



3. Bill under 2 inches long and wing under 16$ inches long. . . Iceland Gull. 

 4. Hind toe very minute and without a nail; head mostly white. 



Kittiwake. 



4. Hind toe well formed and with a nail (5) 



5. Tail forked for about an inch; primaries largely black, 2 to 4 white-tipped. 

 Sabine Gull. 



5. Tail not at all forked (6) 



6. Large.wing 14 to 19 inches long; head, tail, and under parts white 



in summer adult (7) 



6. Small, wing 10 to 13 inches long; head black in summer adult (9) 



7. Back and wings slaty black in adult, brownish in young; wing over 



17J inches Great Black-backed Gull. 



7. Back and wings pearl gray in adult; wing under 17 J inches long (8) 



8. Wing about 17 inches; feet flesh-colored ; bill chrome yellow; 



young mottled Herring Gull. 



8. Wing about 16$ inches; feet yellowish; bill with a red spot below. 



.' California Gull. 



8. Wing about 15 inches ; feet yellowish ; bill banded with black near 

 tip Ring-billed Gull. 



9. Outer primary wholly black; wing over 12 inches; bill reddish in sum- 

 mer Laughing Gull. 



9. Outer primary with white in adult ; wing under 12 inches (10) 



10. Tip of outer primary white in adult; bill red; wing about 11 

 inches Franklin Gull. 



