BIRDS OF NORTH AND MIDDLE AMERICA. 627 
V, 1839, 638; Synopsis, 1839, 327; Birds Am., 8vo ed., vii, 1844, 152, pl. 446.— 
Bonaranms, Geog. and Comp. Lied. 1838, 63. —Girawn, Birds Thong Is., 1844, 
360. —GRAY, List Birds Brit. Mus., Anseres, 1844, 171. —JARDINE, Contr. 
Orn., 1849, 86 (Bermudas, in autumn). —Hurprs, Jardine’s Contr. Orn., 
1850, 13 (Bermudas, 1 spec., Jan., 1849),.—Cazanis, Journ, fiir Orn., 1857, 236 
(Cuba). —Buanp, An. Rep. Gilttiann. Inst. for 1858 (1859), 289 (Bermudas),— 
. GUNDLACH, Journ. fiir Orn., 1862, 94 (Cuba; crit.)—ScutecEL, Mus. Pays- 
Bas, vi, no. 23 (Lari), 1863, 22, 
Larus] sonnenlpritee Gray, Gor, Birds, iii, 1846, 654.—Bonararre, Consp. Av., 
ii, 1857, 224. —Martens, Journ. fiir Orn., 1859, 222 (Bermudas). 
[Larus] sonnrlapachis BONAPARTE, Compt. Rend, xiii 1856, 771.—Gray, Hand- 
list, iii, 1871, 111, no. 10949, 
[Larus (Glaucus)] zonorhynchus Brucn, Journ. fiir Orn., 1853, 102. 
[Gavina] zonorhynchus Bonararte, Naumannia, 1854, 212.—Brucu, Journ. fir 
Orn., 1855, 282 (monogr.). 
[Larus (Glaucus)] occidentalis (not Larus occidentalis Audubon) Brucu, Journ. fir 
Orn., 1853, 101, pl. ii, fig. 20 (California). 
[Laroides] occidentalis Brucu, Journ. fiir Orn., 1855, 282 (monogr.). 
[Gavina] bruchi Bonaparte, Naumannia, 1854, 212. 
[Larus (Gavina)] bruchii Brucu, Journ. fiir Orn., 1855, 283 (monogr.), 
[Larus zonorhynchus] a. mexicanus BONAPARTE, Consp, Av., ii, 1857, 224. 
[Larus zonorhynchus] b. oun Bonaparte, Consp. Av., ii, 1857, 224 (w. North 
America.). 
[Larus] bruchi Bonaparte, Compt. Rend., xlii, 1856, 771. 
LARUS CANUS Linnezus. 
MEW GULL. 
Adults in summer (sexes alike).—Head, neck, rump, upper tail- 
coverts, tail, and entire under parts, including axillars and under 
Wing-coverts, immaculate pure white; back, scapulars, and wings 
uniform light gray (between pale and light neutral gray, and inter- 
mediate in tone between that of L. argentatus and L. californicus), 
the secondaries fading into white terminally (for about 20-25 mm.); 
outermost primary black with a subterminal area of white, including 
both websand shaft, for a space of about 50-57 mm.; second primary 
similar, but the white space smaller (about 25-32 mm. long), and the 
basal portion more distinctly slaty; third primary usually* without 
any white except at tip, the basal portion abruptly gray; fourth 
primary similar to third but the gray involving about basal half of 
exposed portion and more sharply defined against the black; fifth 
primary light gray, tipped with white and with a large subterminal 
area of black, 25 mm. or more in length (extending anteriorly along 
edges for about 19 mm. more), the light gray on inner web becoming 
white or nearly so where touching the black subterminal area; sixth 
primary with a subterminal black bar, about 12.7 mm. wide; remaining 
(proximal) primaries light gray (like back, etc.), passing terminally 
into white; bill greenish yellow (more olivaceous in dried skins), 
purer yellow terminally; rictus and naked orbital ring vermilion red 
@In some examples, perhaps very old birds, there is a roundish spot of white on 
inner web, about 38 mm. from tip. 
