754 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Downy young.—Upper parts uniform deep sooty grayish; under 
parts, including malar region, immaculate white. 
Adult male.—Wing, 116.8%; tail, 35%; exposed culmen, 19.8-20 
(19.9) ®; depth of bill at gonydeal angle, 5.1-5.3 (5.2); tarsus, 21.5-22.9 
(22.2): middle toe, 20.3-20.5 (20.4).? 
Southern portion of Lower California, from Natividad Island 
(lat. 28° N.) on Pacific side and from Espiritu Santo Island in Gulf 
of California (lat. 24° 15’ N.) to Cape San Lucas. 
Uria craveri SaALvADORI, Atti Soc. Ital. Sci. Nat., viii, fasc. iv, Feb. 8, 1866 
Estr. 17 (Natividad Island, ¢ Gulf of California; coll. Turin Mus.).—Marrens, 
Journ fiir Orn., 1868, 70. 
Brachyrhamphus craverii Cours, Proc. Ac. Nat. Sci. Phila., 1868, 66 (monogr.). 
Check List, 2d ed., 1882, no. 869.—Ripeway, Cat. Aquatic and Fish-eating 
Birds, 1883, 41. 
B[rachyrhamphus] craverii Couns, Key N. Am. Birds, 2d ed., 1884, 814; 4th ed., 
1894, 814, figs. of head and leg (crit.). 
Brachyrhamphus craveri STREETS, Bull. U.S. Nat. Mus., no. 7, 1877, 32 (Isla Raza, 
Gulf of California, breeding; descr. nest and eggs; habits; crit.).—Ripeway, 
Proc. U. S. Nat. Mus., iii, 1880, 212 (Cat. N. Am. Birds, no. 758); v, 1883, 
534, footnote (Cape San Lucas); Nom. N. Am. Birds, 1881, no. 758. 
[Brachyrhamphus] craveri Exuiot, Mlustr. New and Unfig. N. Am. Birds, ii, 
1869, introd. (fig. of head and leg; quotes orig. descr.; crit.). 
[Brachyramphus] cravert GRAY, Hand-list, iii,.1871, 100, no. 10815. 
Brachyramphus craverti BatrD, BREWER, and Ripeway, Water Birds N. Am., i, 
1884, 502.— AMERICAN OrNITHOLOGISTS’ Union, Check List, 3rd ed., 1910, 
p. 30.—Cooxs, Auk, xxxiii, 1916, 80 (type locality probably Isla Raza, 
Lower California). 
Brachyramphus craveri AMERICAN ORNITHoLOoGists’ Union, Check List, 1886; 
and 2d ed., 1895, no. 26.—Bryant, Proc. Calif. Sc. Sci., 2nd ser., ii, 1889, 
251 (Cape San Lucas; Natividad Island).—BrewstTEr, Bull. Mus. Comp. 
Zool., xli, no. 1, 1902, 16 (near San José Island, and Espiritu Santo Island, 
Lower California). 
Blrachyramphus] craveri Ripeway, Man. N. Am. Birds, 1887, 15. 
Micruria craveri Grant (O.), Cat. Birds Brit. Mus., xxvi, 1898, 595.—ANTHONY, 
Auk, xvii, 1900, 168, in text (crit.). 
{ Micruria] craveri SHarre, Hand-list, i, 1899, 131. 
Endomychura craveri OBERHOLSER, Proc. Ac. Nat. Sci. Phila., June 2, 1899, 201. 
[Endomychura] craveri ForBEs and Rosinson, Bull. Liverp. Mus., xii, no. 2, 
1899, 52. E 
[Synthliborhamphus] wurmizusume (not Uria wumizusume Temminck) Cougs, 
Key N. Am. Birds, 1872, 344, part (supposed young or winter adult!). 
@ One specimen. 
b Two specimens. 
A specimen of unknown sex (from Isla Raza, Gulf of California) measures as follows: 
Wing, 117.3; tail, 34.3; exposed culmen, 20; depth of bill at gonydeal angle, 5.6; 
tarsus, 23.4; middle toe, 22.1. No adult female examined. 
¢ According to Cooke, Auk, xxxiii, 1910, 80, the type locality is probably Isla Raza, 
Gulf of California, and not Natividad Island, 
