THE GENUS CHOEDEILES SWAIKSON — OBEEHOLSEB. 55 



corresponding localities do not •seem to differ. Two birds sliot on 

 Washington Creek, Kansas, September 12, 1908, identified and 

 recorded^ by Alex Wetmore, constitute one of the two authentic 

 records for Kansas. Strangely enough, however, Chordeilea vir- 

 ginianus sennetti has apparently not a single record for Texas, 

 although it almost certainly migrates through this State; since all 

 the alleged instances of its occurrence there, so far as we have been 

 able to determine, prove to be misidentifications of Chordeiles vir- 

 ginianus howelli^ or Chordeiles mrginiamis aserriensis? Nothing 

 definite is known concerning its winter home, but this is presumably 

 South America. 



This race, like most of the others, rears but one brood a year — 

 in June or July. There are records of eggs from Miner County, 

 South Dakota, as early as June 6 (1894) ; and from Towner County, 

 North Dakota, as late as June 30 (1895) ; while we have seen nestlings 

 from Devils Lake, taken on July 18 (1901). 



The Sennett nighthawk was first described by Dr. Elliott Coues* 

 in the following language: 



2. Sennetti, large, silvery grayish-white predominating above, the white 

 below greatly In excess of the narrow, irregular or broken, dark bars, and lit- 

 tle or no rufous anywhere. Sab. Dakota to Texas, In any treeless country. 

 Types 65,490, Mus. Smiths. Inst, formerly 3301, Mus. B. C, 50 miles west of 

 Pembina, Minn., July 16, 1873, and 4927, Coll. George B. Sennett, Wharton 

 Co., Texas, May 27, 1887. 



Each of the specimens mentioned as types bears on the back of its 

 label this legend, in the handwriting of Doctor Coues: "A type of 

 the species Elliott Coues." The first example, which is now in the 

 United States National Museum, has commonly received the dis- 

 tinction of being the type, but its correct locality is not " 50 miles 

 west of Pembina," as Coues and subsequent authors give it ; but " 50 

 miles west of Pembina Mts.," as the original label, in Doctor Coues' 

 own well-known chirography, shows. This specimen is an adult male 

 in worn summer plumage, of large size — ^that is, as big as Chor- 

 deiles virginianus virginianus, and of pale gray coloration, like the 

 breeding birds of North Dakota and South Dakota ; in fact, a good 

 representative of the race that passes current under the name Chor- 

 deiles virginianus sennetti. The alleged type specimen from Whar- 

 ton County, Texas, which is now in the American Museum of Natural 

 History, in New York, is, however, a typical breeding bird of the 

 small, more buffy, though pale, form of southern Texas, which we 

 hereinafter separate as Chordeiles virginianus aserriensis.^ Since 

 this example does not, consequently, agree with the original diagnosis, 



1 Condor, vol. 11, 1909, p. 159. 



" See p. 57. 



' See p. 71. 



* Auk, vol. 5, January, 1888, p. 37, ) 



