wedge-tailed gull. 
45 
the wedge-tailed gulls, genus RHODO-STETIIIA. 
Rhodostetliia, Bp. Comp. List B. Eur. and N. Amer. p. 62 
(1838). 
Type R. rosea (Macgill.). 
The present genus, which contains only a single species, has 
the_ tail wedge-shaped, the two middle feathers more than half 
Ein inch longer than the next pair, and nearly two inches longer 
than the outermost tail-feather. 
1. THE WEDGE-TAILED GULL. miODOSTETHIA ROSEA. 
Mem. Wern. Soc. v. no. xiii. p. 249 
Rhodostethia rossi Richardson; Macgill. Brit. B. v. p. 618 
(1852). 
Rhodostethia rosea, Dresser, B. Eur. viii. p. 343, pi. 594 
(1877); 11. O. U. List Brit. B. p. 192 (1883) ; Saunders, 
ed. Yarrell’s Brit. B. iii. p. 572 (1884); id. Man. Brit. B. 
P- 643 (1889); Lilford, Col. P'ig. Brit. B. parts xvii. xxiii. 
(1893); Saunders, Cat. B. Brit. Mus. xxv. p. 167 (1896). 
Icarus rossii, Seebohin, Hist. Brit. B. iii. p. 305 (1S85). 
pearlv*frJl^^° Broedins Plumago. — General colour auove iignt 
the first ® pearly-grey, with a blackish outer web to 
tail-coverts an7 5 ri'mp> ^'PPer 
round white with 1 
nm white round the latter; under 
binaries wlr'iie^ biu’bllck '"f “’"‘r “‘1 S"’' • 
■arsi, toes, and IheirrSArisbl S”" 
widi^rhiintH I’^rts in this species are suffused 
DO ulIw h ^ rose-colour, whenL the bird is often 
popularly known as “Ross’s Rosy Gull.” 
Whiter Plumage. — Wants the black collar round tlie 
nrrrr I u^oordiiig to Mr. Saunders, the rosy colour is not so 
prominent at this season of the year. 
