118 LLOYDS NATURAL HISTORY. 
Range.-—Tamaulipas, North-eastern Mexico, and the lower 
Rio Grande Valley, Texas. 
“The general habits of the Chestnut-bellied Scaled Par- 
tridge, as well as its food, are very similar to those of the pre- 
ceding sub-species. ‘The mating- and nesting-season, however, 
commences somewhat earlier.” (Lendire.) 
Nest and Eggs.—Similar to those of C. sguamata. 
THE PLUMED PARTRIDGES. GENUS OREORTYX. 
Oreortyx, Baird, B. N. Amer. p. 642 (1860). 
Type, O. pictus (Doug! ). 
Sexes almost similar in plumage. <A crest of ¢wo very long 
feathers. 
First primary flight-feather ¢termediate in length between 
the seventh and eighth; third or fourth slightly the longest. 
Tail composed of /¢zve/ve feathers, and about ¢hree-jifths of 
the length of the wing. 
Tarsus shorter than the middle toe and claw. 
Only one species, rather larger than the Common Quail, is 
known. 
I. THE PLUMED PARTRIDGE OR MOUNTAIN QUAIL. 
OREORTYX PICTUS. 
Ortyx pictz, Douglas, Trans. Linn. Soc.. xvi. p. 143° (2623) 
Jard. and Selb. Hl. Orn. in. pl.. 207. 
Ortyx plumifera, Gould, P. Z. S. 1837, p. 42 ; Aud. B, Amer: 
V2). 09) pl.201 (1842). 
Oreortyx pictus, Baird, B. N. Amer. p. 642.(1860) ; Bendire, 
N. Amer. B. p.13-(1892) 5° Ogilvie-Grant, Cat. Ba bme 
Mus. xxii. p. 397 (1893). 
Oreortyx pictus plumiferus, Bendire, N. Am. B. p. 14, pl. i. figs. 
2, 3 [eggs] (1892). 
Adult Male— Creast of two very long black feathers ; head, neck, 
