546 NORTH AMERICAN BIRDS. 



a*. Tarsus shorter than exposed culraen ; goxi3 r s longer than middle toe, without 

 claw ; tail exceeding wing by more than length of tarsus ; lower parts with- 

 out trace of spots or streaks. (Subgenus Harporhynchus.) 



b l . Lower tail-coverts light fulvous or ochraceous. 



c 1 . Tarsus 1.50, or more ; middle toe .95, or more ; tail only slightly darker 

 than back ; lower parts dull ochraceous buffy, becoming more ful- 

 vous on under tail-coverts, and buffy whitish on throat, the breast, 

 etc., shaded with grayish brown ; ear-coverts dusky, with distinct 

 whitish shaft-streaks ; no distinct lighter malar streak nor darker 

 streak along sides of throat ; upper parts deep grayish brown, the 

 tail somewhat darker and browner; length about 11.50-13.00, wing 

 3.90-4.30 (4.13), tail 4.90-5.80 (5.34), culmen 1.35-1.75 (1.56), tarsus 

 1.40-1.60 (1.50), middle toe .95-1.12 (1.01). 'Eggs 1.20 X -85, light 

 greenish blue, speckled with clove-brown. Sab. Coast district of 

 California, south along Pacific coast of Lower California. 



710. H. redivivus (GAME.). Californian Thrasher. 



c 2 . Tarsus much less than 1.50, middle toe less than .95 ; tail much darker 

 than back (but scarcely browner) ; lower parts pale brownish gray, 

 becoming dull white on chin, throat, and belly, the under tail-coverts 

 ochraceous-buff, in marked contrast ; ear-coverts light brownish 

 gray, without distinct streaks; a distinct malar stripe of whitish, 

 narrowly barred with dusky, bordered below by a distinct dusky 

 streak along each side of throat ; upper parts plain delicate light 

 grayish brown or brownish gray, the tail dusky, in marked con- 

 trast. Young : Similar to adult, but upper tail-coverts more rusty, 

 and ochraceous of posterior lower parts paler. Length about 10.50- 

 11.00, wing 3.70-3.90, tail 4.57-5.20, culmen 1.08-1.35, tarsus 1.12- 

 1.25, middle toe .80-.88. Nest very bulky, composed of thorny twigs, 

 and placed in bushes. Eggs 1.07 X -76, pale bluish green or green- 

 ish blue, minutely (usually rather sparsely) speckled with reddish 

 brown. Hob. Valleys of Gila and lower Colorado rivers, and 

 south into Sonora.. 711. H. lecontei (LAWR.). Leconte's Thrasher. 



6 2 . Lower tail-coverts deep rusty cinnamon, or chestnut. 



Adult : Above plain brownish gray or grayish brown, the tail darker ; 

 beneath similar, but paler, the chin and throat nearly white, and 

 the under tail-coverts deep rusty cinnamon or chestnut ; a whitish 

 malar stripe, and beneath it a dusky streak along each side of 

 throat. Young: Similar to adult, but more tinged with rusty 

 above, especially on rump and tips of tail-feathers, and lower parts 

 more fulvous. Length about 11.40-12.60, wing 3.90-4.10 (4.02), tail 

 4.80-6.40 (5.67), exposed culmen 1.20-1.50 (1.39), bill from nostril 

 1.02-1.25 (1.14), tarsus 1.28-1.30 (1.29). Eggs 1.07 X -75, plain pale 

 greenish blue. Hab. New Mexico, Arizona, southern Utah, south- 

 eastern California, and northern Lower California. 



712. H. crissalis (HENRY). Crissal Thrasher. 



