"lOA Recejit Literature. LApril 



American forms remains unchanged. The group ranges from southern 

 Canada to Cape Horn, including the West Indies. — J. A. A. 



Oberholser on the American Great Horned Owls.' — Mr. Oberholser 

 considers the Great Horned Owls of America — North, Central, and 

 South — as all referable to a single species, which he regards as divisible 

 into i6 subspecies, of which 7 are restricted to Mexico, Central America, 

 and South America, the remaining 11 coming within the limits of the A. 



0. U. Check-List — an increase of 4 over the number hitherto recognized 

 in the Check-List. He follows Mr. Stone (Auk, XX, 1903, pp. 272-276) 

 in adopting Asio in place of Bubo for the name of the genus, and takes 

 the name magella7iicus in place of virgitiiattus for the species, the former 

 having one page precedence over the latter in Gmelin's ' Sjstema 

 Naturce,' where both names were originally given. Both names have 

 heretofore been in current use, but the forms to which they were given 

 have generally been held to be specifically distinct. Now that it is found 

 necessary to unite them, 7nagellanicus becomes, unfortunately, the cor- 

 rect name for the group, thus replacing the long familiar designation 

 virginianus for the North American forms. Mr. Oberholser' s revision 

 is based on an examination of "more than 200 specimens, representing 

 all but one of the American forms." The North American forms recog- 

 nized are the following : 



1. Asio magellatiicus fallescens (Stone). "Western Texas to southeast- 



ern California ; south to northern Mexico." 



2. Asio magellanicus pacificus (Cassin). "California, except the south- 

 eastern part and the northern and central coast districts ; extending 

 northward to Fort Klamath, Oregon, eastward to San Francisco 

 Mountains, Arizona." 



3. Asio magellatiicus elachistus (Brewster). "Southern Lower Cali- 



fornia." 



4. Asio tnagellanicus icelus Oberholser. "Coast of California, north of 



about 35° north latitude." 



5. Asio magellatiicus lagophonus Oberholser. "Washington and north- 



ern Oregon (excepting the coast region), with Idaho; north through 

 eastern and Central British Columbia to Cook Inlet and the interior 

 of Alaska." 



6. Asio tnagellanicus 5«/'?<;'rtZ'«5 (Ridgway). "Pacific coast region, from 

 Washington (and probably at least northern Oregon) north to south- 

 ern Alaska." 



7. Asio magellatiicus heteroctieinis Oberholser. "Labrador, including 

 at least the north coast of the Territorv of Ungava." 



' A Revision of the American Great Horned Owls. By Harry C. Oberholser, 

 Assistant Ornithologist, Department of Agriculture. Proc. U. S. Nat. Mas., 

 Vol. XXVII, No. 1352, pp. 177-192. Feb. 1904. 



