680 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Cape St. Lucas district of Lower California (San Jose del Cabo; 

 La Paz; Comandu). 



Geothlypis beldliu/i Ridgway, Proc. U. S. Nat. Miis., v, Sept. 5, 1882, 3U (San 

 Jose del Cabo, Lower California; coll. U. S. Nat. Mus. ); Bull. Nutt. Orn. 

 Club, vii, 1882, 257; 1887, 524.— Belding, Proe. U. S. Nat. Mus.,v, 1883,54(5 

 (La Paz, Lower California). — Bryant, Proc. Calif. Ac. Sci., 2d ser.,ii, 188H, 

 20 (Comandu, Lower California; descr. young, nest and eggs, etc.) . — Sharpe, 

 Cat. Birds Brit. Mus., x, 1885, .356 (San Jose del Cabo). — American Orni- 

 thologists' Union, Check List, 1886, no. 682. 



Gieotldiipis] beldingi Ridgway, Man. N. Am. Birds, 1887, 524. 



GEOTHLYPIS FLAVOVELATA Ridgway. 

 ALTA MIRA YELLOW-THROAT. 



Adult male similar in coloration to G. heldiiujl 1)ut very much smaller 

 (rather smaller than G. trlcJia.s melanops). 



Adult male in winter. — Forehead, together with loral, suborbital, 

 malar, and auricular regions uniform })lack, forming a conspicuous 

 "mask;" behind this black mask a broad band of canary yellow, about 

 5 mm. in width; occiput and hindneck brownish olive superficially, 

 the feathers yellowish olive-green l)eneath the surface, this more yel- 

 lowish toward the yellow crown-))and; rest of upper parts uniform 

 bright yellowish olive-green, the remiges decidedly duller, more gray- 

 ish olive-green; under parts bright lemon yellow (slightly paler on 

 abdomen and under tail-coverts), the sides and tianks light brownish 

 or buffy olive-green; maxilla dark brown (nearly black on culmen), 

 much paler on tomia; mandible pale brownish basally. darker termi- 

 nally; legs and feet light horn brownish (in dried skins); length (skin), 

 125; wing, 53.5; tail, 53.5; exposed culmen, 12; tarsus, 21; middle toe, 

 13.5.^ 



Eastern Mexico (Alta Mira, near Tampico, southern Tamaulipas). 



Geotldypls flavovelatus Ridgway, Proc. U. S. Nat. Mus., xviii, no. 1045, Apr. 16, 

 1896, 119 (Alta Mira, near Tampico, southern Tamaulipas; coll. U. S. Nat. 

 Mus.).— Richmond, Proc. U. S. Nat. Mus., xviii, 1896, 631 (Alta Mira). 



GEOTHLYPIS FLAVICEPS Nelson. 

 YELLOW-HEADED YELLOW-THROAT. 



Adult male similar to that of G. jiai'orehdn, but bill nuich longer 

 and the whole crown, occiput, and hindneck yellow. 



Adult male hi sjiring. — Forehead (extending l)ackward about 7.5 

 mm. from frontal antia?), together with loral, suborbital, malar, and 

 auricular regions, uniform deep black, forming a conspicuous "'■ mask;" 

 rest of head, above and behind this black mask, together with hind- 

 neck and sides of neck, light lemon or canary 3'ellow, the occiput and 

 hindneck faintl}^ tinged with olive-green; rest of upper parts uniform 



' ( )ne specimen (the type). 



