V 



30 PACIFIC COAST AVIFAUNA No. 10 



117. Otus asio cineraceus (Ridgway). 



Mexican Screech Owl. 



Synonyms — Scops mccalli, part; Megascops asio trichopsis, part; Mcgascops 

 asio cineraceus, part; Scops asio, part; Scops asio var. maccMlli, part. 



Status — A common resident of the Upper Sonoran zone in southern Ari- 

 zona. It has not been found on the plateau region of northeastern Arizona. 



118. Otus asio gilmani Swarth. 



Sahuaro Screech Owl. 



Synonyms — Scops mccalli, part; Scops asio: Scops asio var. maccalli, part; 

 Scops asio trichopsis; Scops trichopsis; Megascops asio trichopsis, part; Megas- 

 cops asio cineraceus, part ; Otus trichopsis, part. 



Status — A common resident of the hot Lower Sonoran valleys of southern 

 and western Arizona. Ranges east to Tucson and the valley of the Santa Cruz 

 River, west to the Colorado River ; it ascends the latter stream at least as far as 

 Fort Mohave (a specimen collected by Cooper at Fort Mohave, February 24, 

 1861, no. 4395, coll. Univ. Calif. Mus. Vert. Zool.). 



119. Otus trichopsis (Wagler). 



Spotted Screech Owl. 



Synonyms — Megascops aspersus; Megascops trichopsis. 



Status — The Huachuca Mountains seems to be the only place in the United 

 States where this species has been found, though it undoubtedly occurs also in 

 some of the neighboring mountain ranges. In the Huachucas it is known as a 

 rare summer visitant, about ten specimens having been secured. A set of three 

 eggs taken in that range on June 19, 1901, by G. F. Breninger, and now in the 

 collection of the Field Museum of Natural History, establishes a breeding rec- 

 ord for the region. The parent bird being taken with the set (no. 16234 coll. Field 

 Mus. Nat. Hist.) renders the identity unquestionable. 



1 20. Otus flammeolus ( Kaup ) . 



FlammulatEd Screech Owl. 



Synonyms — Scops flammeola; Megascops flammeolus. 



Status — Probably a fairly common summer visitant of the higher mountains 

 throughout the state. Specimens have been secured at the Grand Canon (Mer- 

 riam, 1890, p. 39), near Camp Apache (Ilenshaw, 1875b, p. 406), in the Huachuca 

 Mountains (Swarth, 1904b, p. 9), and in the Chiricahua Mountains (specimen in 

 Mus. Vert. Zool.). It has been found breeding in the Huachucas (Willard, 1909c, 

 p. 199). 



121. Bubo virginianus pallescens Stone. 



Western Horned Owl. 

 Synonyms — Bubo magellanieus; Bubo virginianus; Bubo virginianus pacifi- 

 cus; Asio magellanieus pallescens; Bubo magellanieus pallescens; Bubo vir- 

 ginianus var. arcticus; Bubo virginianus subarcticus; Bubo virginianus saturatus; 

 Asio magellanieus pacifiens. 



