420 



NUUTU AMEKICAN B.IKDS. 



In regard to tlie i)arGiitii<j;ii of the ogys tlius discovered, the coloration and 

 size of wliicli corrcH|»oinl so closely with those of the Poor-will, Mr. Siih in 

 writes, in a letter diiled March 10,1872: "In respect to thti Aiitrosfoinus 

 which lays white eggs in (iuatc^niala, I have carefully examined the skin of 

 the female sent to mo with the eggs in question, and represented as their 

 parent. It certainly is not A. nuttalli, hut appears to hclong to the spe- 

 cies descrihed by Wagler as A. mavromjistax. This species is very closely 

 allied to A. von/criis, but appears to he sufficiently distinct, inasnuich as 

 the rictal bristles are very long, the throat is almost witliout white feathei-s, 

 and the white on the tail is more limited in extent than in A. vocij'vriis. 

 Tiie true A. voei/erus is frecjuently found in winter in (Tuatemala, but is 

 probably only a migrant. The other species would certainly appear to be a 

 resident in South Mexico and Guatemala. With respect to A. nuttalli, I 

 may add that I have recently acquired a skin from Ouanajuata, in Mexico. 

 This is the first instance of the occurrence of the species in Mexico at all, 

 that I am av are of." 



Mr. IJidgway met with the Poor-will from the eastern slope of the Sierra 

 Nevada to the Wahsatch and Uintah Mountains. He describes its notes as 

 much like those of the eastern A. wci/erus, except that the first syllable is 

 left off, the call sounding like simply jwor-will, the accent on the last sylla- 

 ble. It frequents chiefly the dry mesa and foot-hills of the mountains, and 

 lives almost entirely on the ground, where its two white unsi)otted eggs are 

 deposited beneath some small scraggy sage-bush, without any sign of a nest 

 whatever. Both sexes incubate. 



Stemom of Chordtiles virginianta. 



Btemum of Caprimulgus mielotnus. 



