612 



CAPRIMULGID^. 



b. $ ad. sk. Waukegan, Illinois, May 15 Salvin-Godman Coll. 



(E. W. Nelson). 



c. S ad.sk. Milk River, July 25 (Coues). Salvin-Godman Coll. 



d. c? ad. sk. Pembina Mts., July 10 (Co2<6'«). Salvin-Godman Coll. 

 f- d" ; /. $ fid. sk. Atotonilco (Iluejotziugo), Salvin-Godman Coll. 



Mexico {Ferrari-Pei-cz). 



<j. (S ad. sk. Calovevora, Veragua (Arce), Salvin-Godman Coll. 



Subsp. a. Chordeiles henryi. 



Chordeiles henryi, Cass, lllustr. B. Calif. S,- Te.r. i. p. 233 (1855); 



Baird, B. N. Am. p. 153, pi. xvii. (1858) ; Scl. Cut. Amer. B. 



p. 279 (1862) ; id. F. Z. S. 1866, p. 133 ; Blakist. Ibis, 1862, p. 3 ; 



id. op. cit. 1863, p. 55 ; Dresser, Ibis, 1865, p. 471 ; Cory, Auk, vi. 



p. 37 (1888). 

 Caprimulgus henryi, Koenig-Warth. J. f, O. 1868, p. 376. 

 Chordeiles popetue, var. henryi, Baird, Breiv. Sf liidgiv. N. Am.B . 



ii. p. 404 (1874) ; Merrill, Froc. U.S. Nat. Mus. i. p. 146 (1878) ; 



Belding, t. c. p. 427 (1879). 

 Chordeiles virginianus henryi, Stejn. Auk, ii. p. 182 (1885); A. O. 



V. Cheek-list, p. 221 ( 1886) ; Evermann, Auk, iii. p. 80 (1886) ; 



Townsend, Froc. U.S. Nat. Mus. x. p. 207 (1887) ; Ridgw. Ma7i. 



N. A. B. p. 301 (1887) ; Harsbr. Auk, vi. p. 239 (1889). 

 Chordeiles popetue henryi, Dreiv, Auk, ii. p. 17 (1885) ; Bretvst. t. c. 



p. 143(1885). 

 Chordeiles sennetti, Coues, Auk, 1888, p. 37 (Dakota to Texas). 

 Chordeiles virginianus sennetti, Chapm. Auk, 1888, p. 396. 



, Similar to 0. virginianus, but much lighter, with a much greater 

 predominance of the light, almost cinereous mottlings ; lower abdo- 

 men and lower tail-coverts more uniform and often pure white ; the 

 patch on the primaries generally larger. The female more fulvous 

 in colour. Total length about 'J*l to 10 inches, wing 7'6 to 8-4, 

 tail 4-3 to 4-8. 



Tyj deal specimens from the plains of Texas and Mexico are very 

 distinct, but others approach the true G. virginianus. In many 

 cases it is difficult or even impossible to assign the specimens to any 

 particular form, and indeed the intermediate individuals form a 

 perfect passage between the subspecies. 



Hah. Tablelands of Mexico and Texas, throughout Western 

 United States, east to Northern Illinois. Probably a resident bird 

 in the southern parts of its habitat, while northern specimens 

 wander southwards into South America. I have seen undoubted 

 specimens from Bogota, where the true C. virginianus also occurs. 



a. 2 ad. sk. Pembina, Dakota, July 16 Salvin-Godman Coll. 



(Dr. Coues). 



Dakota, July 30 ( V. Bailee/). Salvin-Godman Coll. 



Wyoming Terr., Aug. 8 ( V. Salvin-Godman Coll. 



Bailey). 



P'ort Bridger, Utah, June (C. Selater and Salvin- 



Drexler). Godman Colls. 



California. Lord Walsingham 



[P.J. 



California, May 20 {R. B. Salvin-Godman Coll. 



Ilerron). 



