( lxw ) 
Sup-FAMILY Procellarine. 
GENUS Thalassidroma. 
(976) T. 
Sup-FAMILY Halodromine. 
GENUS Pelicanoides. 
Je (977) P. urinatrix—Little Diving Petrel. 
Faminy Laride (Gulls and Terns). 
I. LESTRIDINZ—Skuas or Parasitic Gulls. 
Il. Lartina—Gulls. 
II]. StERNINaz—Terns. 
Susp-FAMILY Lestridine. Nil. 
Sup-FAMILY Larine. 
A. Laree. 
B. Xemew. 
A.  Laree. 
GENUS Larus. 
P, - (978) L. fuseus—Lesser Black-backed Gull. 
B. Xemee. 
GENUS Kroikocephalus. 
P, (979) K. ichthyeetus—Great Black-headed 
”” 
GeNus Xema. (D. Passing over.) 
(980) X. brunnicephala—Brown-headed 
(981) X. ridibunda—Laughing 
” 
bb) 
