652 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
[Hydrocoloeus] minutus BoNaparte, Compt. Rend., xlii, 1856, 771.—HEInz and 
ReicHENow, Nom. Mus. Hein: Orn., 1890, 359. 
Chroicocephalus minutus Eyton, Cat. Brit. Birds, 1836, 54.—REICHENBACH, 
Av. Syst. Nat., Longipennes, 1852, p. v.—Brucu, Journ. fiir Orn., 1853, 
105.—Breum, Naumannia, 1855, 295; Vogelf., 1855, 343.—Lawrence, in 
Baird, Rep. Pacific R. R. Surv., ix, 1858, 853.—Barrp, Cat. N. Am. Birds, 
1859, no. 671.—Cours, Proc. Ac. Nat. Sci. Phila., 1862, 311 (monogr.).— 
Satvaport, Uce. Sardin., 1864, 124.—SaunpErs, Ibis, 1871, 399 (8. Spain).— 
TaczanowskI, Journ. fiir Orn., 1873, 111 (e. Siberia); Bull. Soc. Zool. France, 
1876, 264 (e. Siberia); Ornis, 1888, 508 (Poland); Mém. Ac. St. Petersb., 
xxxix, 1893, 1043 (e. Siberia).—Gre1io1!, Ibis, 1881, 218 (Italian records).— 
Rappe, Orn. Caucas., 1884, 483. 
[Chroicocephalus] minutus Licutenste1n, Nom. Av. Mus. Berol., 1854, 98. 
Chroocephalus minutus Sauvaport, Faun. Ital., Ucc., 1872, 289.—Giento1, Avil. 
Ital., 1886, 422; i Resoc. Avif. Ital., 1889, 638; ii. Resoc., 1890, 648; iti. 
Resoc., 1891, 509. 
Gavia minuta Macawiivray, Man. Brit. Orn., pt. ii, 1842, 242; Brit. Birds, v, 
1852, 613.—Srvertzov, Turkestan. Jevotnie, 1873, 70 (Turkestan, up to 
1,000 ft.). ; 
Glavia] minuta Buastus, Journ. fiir Orn., 1865, 371 (crit.). 
Larus atricilloides FaucKx, Reise Russl., v, 1786, 355, pl. 24 (Siberia). 
[Larus] atricilloides Gme.in, Syst. Nat., i, pt. ii, 1789, 601.—Lataam, Index Orn., 
ii, 1790, 813. 
Larus d’orbignni ‘Aupouin, Hist. Nat. de Egypte, 1825, pl. 9, fig. 3; Expl. 
Planch. Ois. Egypte, 2d ed., 1828, 341.—Lesson, Hist. Nat. Mam. et Ois., 
ix, 1837, 516. 
L{arus] d’orbignyi Gray, Gen. Birds, iii, 1846, 654. 
Larus nigrotis Lesson, Traité d’Orn., 1831, 619 (see Pucheran, Rev. et Mag. 
Zool., 1850, 15, and Hartlaub, Journ. fiir Orn., 1855, 420). 
L{arus] nigrotis Gray, Gen. Birds, iii, 1846, 654. : 
L{arus] pygmeus Gray, Gen. Birds, iii, 1846, 654 (based on ‘‘St. Vinc. Exp. de 
la Morée, Ois. t. 52’). , 
Genus BLASIPUS Bruch. 
Blasipus Brucu, Journ. fiir Orn., 1853, 108. (Type, Larus modestus Tschudi.) 
Blacipus (emendation) Hens and RetcuEenow, Nom. Mus. Hein. Orn., 1890, 357. 
Epitelolarus Heine and Reicuenow, Nom. Mus. Hein. Orn., 1890, 359. (Type, 
Larus heermanni Cassin.) 
Medium-sized Laride (wing 312-376 mm.) with under parts plain 
sooty brown or deep brownish gray (white in one species), and tail 
mostly gray or blackish in adults; young mostly plain grayish brown, 
in some species with feathers of upper parts terminally margined or 
tipped with paler brown, whitish or buffy. 
Range.—Pacific coast of America (Chile to British Columbia). 
(Four species.) 
KEY TO THE SPECIES OF BLASIPUS.% 
a. Upper parts plain slate-gray, deep neutral gray, dark gull gray, on fuscous; under 
parts plain gray or white; tail plain gray, almost uniformly black with white 
tip, black with white bars and tip, or gray with a subterminal black band; fore- 
head and chin white, the rest of head slaty black, or else whole head (and neck) 
white. (Adults.) 
@ Prepared at my request by Mr. J. H. Riley. 
