THE GENUS OHOBDEILES SWAISTSON — OBEEHOLSEE. 39 



ently represent the breeding form at these localities. Specimens 

 from Ashcroft, Lac La Hache, Hope, and Chilliwack, in southern 

 British Columbia, have considerable indication of the more brownish, 

 more heavily light-mottled upper surface of ChordeUes virginianus 

 hesperis, but are, on the whole, nearer ChordeUes v, virginianus. An 

 adult from Carberry, Manitoba (No. 57875, Am. Mus. Nat. Hist., 

 July 29, 1892), and a half -grown young from the same locality (No, 

 67876, Am. Mus. Nat. Hist., Aug. 1, 1892) are somewhat vergent 

 toward ChordeUes virginianus sennefti, but are not pale enough 

 above for the latter and apparently belong under the typical form. 

 Another adult from "Winnebago County, Iowa (No. 26724, A. N. S. 

 Phila., Sept. 1, 1879), which seems to represent the breeding bird 

 of this locality, is likewise intermediate, but nearer ChordeUes v. 

 virginianus. A typical example of ChordeUes v. virginianus from 

 Trail, extreme southeastern British Columbia (No. 2811, Victoria 

 Mem. Mus., June 14, 1902) , is doubtless a migrant, since the breed- 

 ing subspecies at this place is ChordeUes virginianus hesperis. Simi- 

 larly migrant also doubtless are two adult males (No. 15638 and 

 No.' 15639, L. B. Bishop, June 5, 1906) from Maple Creek, south- 

 western Saskatchewan, where the breeding subspecies is ChordeUes v. 

 hesperis. Two other adult males (No. 13449 and 3578, L. B. Bishop) , 

 respectively from Stump Lake, N. Dak., August 2, 1905, and Towner 

 County, N. Dak., June 8, 1897, are likewise best considered migrant 

 ChordeUes v. virginianus, though verging a little toward C. v. hes- 

 peris, since the breeding bird of these localities is ChordeUes vir- 

 ginianus sennetU, and these two specimens are too dark for that 

 race. Another example (No. 63939, U.S.N.M.), from Pembina, 

 N. Dak., taken June 16, 1873, is unquestionably perfectly typical of 

 C. V. virginianus, and hence a belated migrantj for we have an actu- 

 ally breeding female of ChordeUes virginianus sennetti from this same 

 locality, taken three days earlier. A single individual from Cushion 

 Lake, southeastern Missouri (No. 205012, U.S.N.M.), is typical Chor- 

 deUes V. virginianus, but does not, in all probability, represent the 

 breeding form of this locality, which form is reasonably sure to be 

 ChordeUes virginianus chapmani. A single male, perhaps a migrant, 

 from Eichland County, southeastern Illinois (No. 90781, U.S.N.M., 

 May 25, 1883) , is apparently nearer the typical subspecies, though the 

 breeding bird of the adjoining county of Wabash is ChordeUes vir- 

 ginianus chapmani. 



Birds taken on Smiths Island, southeastern Virginia, prove to be 

 smaller than northern specimens, and are, in fact, about half way be- 

 tween Cho7'deUes virginianus virginianus and ChordeUes virginianus 

 chapmani; but, both size and coloration taken into consideration, 

 seem to be nearer the former. A single adult female, from Fort 

 Macon, North Carolina (No. 57903, TJ.S.N.M.), taken June 10, 1869, 



