SANDWICH TERN. 
27 
being often very distinct. In one specimen in the British 
Museum the ground-colour is purplish-buff with brown spots. 
i‘S5-i' 85 inch; diam. i-o5-i'2. 
IV. THE S.ANDWICH TERN. STERNA CANTIACA. 
Stei-na cantiaca, Gm. Syst. Nat. i. p. 606 (1788); Macgill. 
Brit. B. V. p. 630 (1852); Dresser, B. Eur. viii. p. 301, 
pi. 586 (1877); B. O. U. List Brit. B. p. 183 (1883); 
Saunders, ed. Yarrell’s Brit. B. iii. p. 540 (1884); See- 
bohm Hist. Brit. B. hi. p. 272(1885); Saunders, Man. 
Brit. B p. 627 (1889); Bilford, Col. Fig. Brit. B. part xxix. 
(18947; Saunders, Cat. B. Brit. Mus. .xxv. p. 75 (1896.) 
Adult Male.— -General colour above dark pearly-grey, the 
?hSrdo?tre‘^ wing-coverts like the back, with 
quills darker bastard-wing, primary-coverts, and 
frosted ^ especially the primaries, which are 
white shof-r"^ ^ Srey ; the four outer primaries with 
rsneer band along its inner 
while • feathers, the rest of the inner webs 
less are P'^'^^ries and secondaries white, with more or 
crown Ir r” outer webs ; upper tail-coverts and tail white ; 
the lower blue-black, the crest-feathers pointed ; 
collar ronnrf o^ f^^oe, sides of neck and a 
body with the ^ neck, as well as the under surface of the 
Total length^ 16^ ^‘"S-ooTCrts and axillaries, pure white, 
tarsus, i-r ^ ^-3; 'ving, ir8; tail, 6-5 ; 
inches ; length, 16-5 
wanting tLTlack^d*^tlf ™mmer plumage in 
spot in front of the eve • th?*^^ 
black Streaks nnri o crown white, with a few narrow 
" streaks, and the nape more thickly streaked with black. 
bars 0/ black°^^Mo sub-marginal or sub-terminal 
grey • tail-feathers lesser wing-coverts a band of ashy- 
black- hill h dusky at tips and barred or spotted with 
mandible ^ yellowish at the base of the under 
