APPENDIX. 885 
sex of C. virginianus texensis so closely as not to be distinguished with certainty. The species 
is closely related to C. graysoni of Mexico, and may be found in fact to intergrade with the 
latter. It inhabits southern Arizona and adjoining portions of Mexico, where it has long 
been known to the natives, though only recently recognized by ornithologists. From the 
first accounts which reached us, the bird was supposed to be C. graysoni, and it was entered 
under this name in the A. O. U. List. It was first named C. ridgwayi by Brewster, The 
Auk, April, 1885, p. 199. A monograph of the species and its allies, illustrated by a colored 
plate, is given by Allen, Bull. Amer. Mus. Nat. Hist., July, 1886, pp. 273-290, pl. 23. 
COUES KEY, 1884. UNION LIST, 1886. 
574. Orortyx picta. 292. Oreortyx pictus. 
000. [Not admitted in the Key.] 2924. pictus plumiferus. 
575. Lophortyx californica. 294. Callipepla californica. 
000. [Not admitted in the Key. ] 294a, - californica vallicola. 
576. Lophortyx gambeli. 295. gambeli. 
577. Callipepla squamata. 293. squamata. 
2938a. squamata castanogastris. 
577 bis. Add: Callipepla squamata castaneiventris. CHESTNUT-BELLIFD SCALED 
PartripGs. Like the last, but the general coloring deeper and richer ; crown concolorous 
with the back, and cheeks with the breast, both much darker than the throat; and belly 
with a conspicuous central patch of uniform chestnut. The 9? lacks this patch, and is 
much paler than the g. While the true C. sguamata inhabits the Mexican table lands and 
thence into Arizona, New Mexico, and western Texas, this form appears to characterize the 
lower lands, extending into the lower Rio Grande valley. Bull. Nuttall Club, viii., Jan. 
1888, p. 34. 
578. Cyrtonyx massena. 296. Cyrtonyx montezume, 
579. Coturnix dactylisonans. 000. [Not admitted in the List.] 
580. Squatarola helvetica. 270. Charadrius squatarola. 
581. Charadrius dominicus. 272. dominicus. 
582. dominicus fulvus. 272a. dominicus fulvus. 
583. pluvialis. (271.] apricarius. 
584. Aigialites vociferus. 273. Agialitis vocifera. 
585. wilsonius. 280. wilsonia. 
586. semipalmatus. 274. semipalmata. 
587. melodus. 277. meloda. 
588. melodus circumcinctus ? 277a. meloda circumcincta. 
589. hiaticula. 275. hiaticula. 
590. curonicus. [276.] dubia.” 
591. cantianus nivosus. 78. nivosa.! 
(279. ] mongola. 
591 bis. Add: Bgialites mongolicus. Moncot1an PLover. Adult $9, in sum- 
mer: Above, brownish-gray; below, white, with a broad cinnamon or chestnut pectoral bar, 
extending more or less along the sides, encircling the neck behind, and somewhat tinging 
the pileum. A long black subocular stripe, involving the lores and auriculars, reaching to 
the bill, continuous in front of the eye with a black frontlet, in advance of which is a 
white area divided by a narrow median line of black which connects the black frontlet with 
1 A proper change, giving this species full rank, as distinguished from . cantianus, as suggested in the 
Key, p. 604. 
