Hinns — CAPRIMl'LGIDAE — CIIORDEILES IlENRYI. 



153 



As a summary of the whole subject, I am inclined to think tluit all the varieties described 



belong to one species, varying somewhat with the locality, those from tlie Atlantic and, peihaps. 



Pacific regions being darkest, without much mottling ; those from the interior province, or from 



the Missouri to the Rocky Mountains, being much more varied, with a tendency to pale grayish 



tints in northern localities, and reddish in more southern, the latter of smaller size. In this 



generalizitioa I would scarcely except the C. henryi. The C. texensia is, hpwever, quite 



diflereut. 



List of specimens. 



CumI 

 No. 



4S99 

 IJU 

 I60S 

 6964 

 SSKi 

 7i99 

 6006 

 6007 

 6006 



S»S 



xsa 



9901 



sao3 



S9D3 

 &SIM 



8877 



8878 



?6013 



Bex. 



Locality. 



Wtieii colluded. 



Msy 16,11^16 

 June 10, 184-1 

 May 13, 1857 



—,1857 



Dark variety. 



Calcajtieu, La 



Carlisle, Pa 



do 



St. Lnuiii 



Kajisaa 



Indept'Ddencc, Mo 



Fort Slcilacoani, VV. T. 

 CoMUmnes river, Cal , . . 

 Tulare rollcy, OdI 



PaU variety. 



Fort Riley 



70 milo west of Ft. Riley. June M. 1856 

 8S milcii west or Ft. Riley. June 30, 1866 

 40 miles above Ft. Pierre.. June 30,1856 



do do I May 30,1856 



do do I do 



Bridgcr'9 Fa.4s ' Auguat 13, 1856 



Fort Laramie 8epu 16, 1857 



.... do do 



Black HUIa.> (Camp4).... SopC 7,lf57 



LoupPork July 24,1857 



Loe Nogalea, Sonora ' June — ,1855 



Whence obtained. 



G. Wurdeman 



S. F. Baird 



do 



Lt. Bryan, U.S.A.. 



do 



W. M. Hagraw 



Dr. Suckley .U.S.A. . 



Lt. Williamson 



, do 



Dr. \V..\, Hammond 



Lt. F. T. Bryan 



do 



Orig'l 

 No. 



Lt. Warren, U.S.A. 



do 



do 



Lt. F. T. Bryan.. 

 W. M. Magraw.. 

 , do 



Lt. Warren... 



. ...do 



.Major Emory . 



360 

 208 



83 



Collected by — 



W. 8. Wood . 



Dr. J. G. Cooper. 



Dr. Heennann. 

 do 



Length 



9.50 

 9.50 



10.00 



W.8. Wood 



do 



Dr. P. v. Haydcn.. 



9. 



9.25 



9.25 



9.25 



9.50 



8.40 



8.50 



W.S.Wood... 

 Dr. Cooper .... 



do 



Dr. Hayden 9.25 



9.25 



Dr. Kennerly 



Extent. 



25.67 

 24.50 



24.35 



22. 



22.25 



23.25 



23. 



21. 



21.50 



20.75 



23.00 



22.25 



Wing. 



8.17 

 8.33 



8.00 

 8.25 

 8.20 

 7.50 

 7.70 



7.70 



8. 



7.25 



8.25 



8.25 



8.25 



7.00 



7.25 



7.50 



7.40 



Voniig. 



Byes black. 

 Iria brown. 



Not full grown. 

 do 



CHORDEILES HENRYI, Cass in. 



Western Night-IIawk. 



ChorieiUs henryi, Cassin, Illustrations,*!, Jan. 1855, 333. 



Sp. Cs. — Female similar to C. virginianus, but the upper parts much more mottled and more rufous. 

 Hab. — Rocky Mountains of New Mexico. 



The specimens hitherto collected of this species are not sufficiently perfect to admit of a 

 satisfactory description. The characteristics can only be given by comparison with C. virginianus, 

 as already described. 



The skin upon which this species was based by Mr. Cassin is a female in very poor condition 

 (6690,) and much stretched, which may account for its having been described as larger than 

 C. virginianus. This is scarcely the case, as shown by the comparative measurements of the 

 two. There is no undoubted specimen of the male bird in the collection before me from Texas, 

 the only large one, with a decidedly white patch on the throat, lacking the white marks on the 

 end of the tail. 



This species is conspicuously different from Pennsylvania specimens of C. virginianus in the 



very great amount of mottling on the upper parts, which exhibit nothing of the dark tones 



prevailing in the last mentioned skins. The predominent tint of the mottling is a yellowish 



rusty, brightest, and the blotches largest, on the scapulars. The under parts are yellowish 



20 b 



