544 NORTH AMERICAN BIRDS. 



rufus. Hah. Eastern Mexico, north to lower Eio Grande Valley, 

 in Texas.. 706. H. longirostris (Lafr.). Long-billed Thrasher. 

 (P. Wing 3.55, or less, tail 4.45, or less; lower mandible wholly- 

 black; colors darker, the markings more sharply defined; 

 wing 3.40-3.55, tail 4.10-4.45, culmen 1.20-1.25, tarsus 1.15- 

 1.25. Hub. Cozumel Island, Yucatan. 



H. guttatus KiDQw. Cozumel Thrasher.^ 

 il Above brownish gray. 



c^. Markings on lower parts sharply defined, much darker than color of 



back. (Outer tail-feathers with white terminal spots ; wings with 



two distinct white bands.) 



d}. Markings of lower parts roundish ; under tail-coverts spotted ; 



wing 4.10, tail 5.60, much graduated ; exposed culmen 1.15, 



tarsus 1.50. Hah. Southwestern Mexico (Oaxaca). 



H. ocellatus Scl. Ocellated Thrasher.' 

 d}. Markings of lower parts triangular or wedge-shaped ; under tail- 

 coverts without spots ; length about 10.00, wing 3.90-4.15, tail 

 4.35-4.60, moderately gi-aduated, culmen 1.10-1.12, tarsus 1.25- 

 1.40. Eggs 1.06 X -75, greenish white, spotted with pale reddish 

 brown. Hah. Lower California. 



709. H. cinereus Xantus. St. Lucas Thrasher. 

 c^. Markings on lower parts indistinct (sometimes nearly if not quite 

 obsolete), or else not darker than color of back. 

 d}. Lower mandible with basal portion light-colored ; exposed culmen 

 .95, or less, bill from nostril loss than .85. 



Adult : Above plain grayish brown, the middle and greater 

 wing-coverts with indistinctly paler tips ; beneath much 

 paler grayish brown, becoming nearly white on chin and 

 throat and middle of belly, buffy on under tail-coverts, and 

 more decidedly brown on flanks, the chest and breast 

 (sometimes upper belly also) marked with triangular spots 

 or streaks of deeper grayish brown (these markings usu- 

 ally indistinct — sometimes quite obsolete — in summer plu- 

 mage) ; inner webs of two or three outer tail-feathers tipped 

 with dull whitish. Young : Similar to adult, but wing- 

 coverts and rump tinged with tawny buff, tertials edged 

 with same, and lower parts usually whiter, with nar- 

 rower (and sometimes much darker) streaks. Length 

 about 9.50-10.50, wing 3.90-4.20, tail 4.25-4.90, exposed 

 culmen .87-.95, bill from nostril .75-.81, tarsus 1.30-1.40. 

 Eggs 1.05 X -76, similar to those of H. cinereus, but ground- 

 color averaging paler, or more decidedly whitish. Hah. 



1 Harporhynchiis guttatus Ridgw., Descr. New Sp. B. Cozumel, Feb. 26, 1S85, 1. 

 ' Harporhynchtia ocellatus ScL., P. Z. S. 1862, 18, pi. 3. 



