380 CHECK-LIST OF NORTH AMERICAN BIRDS. 
OrDER LONGIPENNES. 
Famity LARIDZ. 
GENUS LARUS LINN&Us. 
Larus oregonus SHUFELDT. [80.] 
Larus oregonus SHUFELDT, Journ. Acad. Nat. Sci. Phila., ser. 2, IX, 
1892, 398, pl. xv, fig. 3. 
Pleistocene; Oregon. 
Larus robistus SHUFELDT. [29.] 
Larus robustus SHUFELDT, Journ. Acad. Nat. Sci. Phila., ser. 2, [X, 1892, 
398, pl. xv, figs. 1-2. 
Pleistocene; Oregon. 
OrDER TUBINARES. 
Famity PROCELLARIIDE. 
GENUS PUFFINUS Brisson. 
Piffnus cénradi Marsu. [81.] 
Puffinus conradi Marsu, Amer. Journ. Sci., ser. 2, XLIX, 1870, 212. 
Miocene; Maryland. 
OrpDER STEGANOPODES. 
Famity SULIDZ. 
GENuSs SULA Brisson. 
Sila loxéstyla Corr. [32.] 
Sula loxostyla Corr, Trans. Amer. Philos. Soc., N. S., XIV, 1870, 236, 
fig. 53. 
Miocene; Maryland. 
