96 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY, 
Bubo virginianus elachistus, subsp. nov.! 
DwarF HorRNED OWL. 
Bubo virginianus (not Strix virginiana GmeEvin) Batrp, Cat. N. Amer. Birds, 1859, 
no. 48, part; Proc. Acad. Nat. Sci. Phila., 1859, 501, 802 (Cape St. Lucas). 
SHarpeg, Cat. Birds Brit. Mus., II. 1875, 19-28, part. 
[ Bubo virginianus] var. arcticus COUES, Key N. Amer. Birds, 1872, 202, part. 
Bubo virginianus, yar. arcticus Cours, Check List, 1873, 63, no. 3l7a, part. Barro, 
Brewer, and Ripeway, Hist. N. Amer. Birds, III. 1874, 64, part (Lower 
California). 
Bubo virginianus subarcticus (not Bubo subarcticus Hoy) Rripewar, Nom. N. Amer. 
Birds (Bull. U. S. Nat. Mus., no. 21), 1881, 36, no. 405a, part; Proc. U.S. 
Nat. Mus., VI. 1883, 349 (crit.; Victoria Mts.). Brxpine, Jbid., V. 1883, 5438 
Cape Region); VI. 1888, 349 (Victoria Mts.). Bryant, Proc. Calif. Acad. 
Sci., 2d ser., II. 1889, 284 (Cape Region; Victoria Mts.). 
Bubo virginianus arcticus COUES, Check List, 2d ed., 1882, 80, no. 463, part. 
B [ubo] virgintanus subarcticus RipGway, Man. N. Amer. Birds, 2d ed., 1896, 263, 
part. 
Subspecific Characters: — Similar to Bubo virginianus saturatus, but very much 
smaller. 
Measurements : — ae 
=: 
oo 
& q aa 
cS a 2s 
Sierra de la Laguna, May 31 e 
Mal : 6 , ? > 12.96 2.4 85 
ae Tigpe, No: U8 8 1887, M. Abbott Frazar id 
Male No. 17,865 | Bal Tose Hele veya ot asian pear tases 
1887, M. Abbott Frazar 
Male No. 47,302 { Santa Anita, July 17, eee ee 52 2.2880 
Loye Miller 
Average 12.89+ 241 .838+ 
Female No. 17,867 } Sierra dejla agate) spel. bis42 2.85.89 
1877, M. Abbott Frazar 
This dwarf form of B.virginianus, the smallest, if I am not mistaken, which 
is at present known, at least from any part of North America, is represented in 
my collection by four adult birds, three of which are colored and marked nearly 
like average specimens of saturatus. The fourth appears much paler, but it is in 
excessively worn condition, and a number of new feathers sprouting among and 
1 In April of the present year I showed my Horned Owls from the Cape Region 
to Mr. Oberholser. He told me that he had decided to describe the form which 
they represent, but finding that I had already done this in manuscript and that my 
paper was likely to appear before his, he was kind enough to suggest that I use 
the above name, which he had selected and which 1s derived from the Greek 
éAdxioros = least. 
