ASIO. 5 
et digitis plumosis cervinis. Long. tota circa 14:0, ale 11°5, caude 6:0, tarsi 1-6. (Descr. maris ex Santa 
Izabel, Chihuahua, Mexico. Mus. nostr.) 
Hab. Nortu America, temperate districts ® 11.W—Mexico, San Diego, Sonora (Robinette §), 
Santa Izabel and Carretas in Chihuahua (W. Lloyd), Valley of Mexico (Sumichrast 4, 
Herrera’), Mexicalcingo (Ferrari-Perez), Orizaba (Sumichrast *). 
The American Long-eared Owl represents in North America Asio otus of the 
temperate regions of the Old World, the two birds being much alike. They may 
readily be distinguished by the distinct stripes of the upper plumage of A. otus in 
contrast with the more irregular mottling of the same part in A. wilsonianus. The 
dark shafts of the feathers on the under surface of the latter bird are much narrower 
than those of the former. 
A, wilsonianus is a well-known bird in all parts of the United States, breeding 
wherever it is found, laying from three to seven white eggs in the deserted nests of 
Crows, Magpies, Herons, or other nests of sufficient size. In Mexico its range is chiefly 
confined to the northern and central portions of the country. ‘Two specimens sent us 
by Mr. William Lloyd from Chihuahua were obtained one in January and one in 
February. The species was also met with by Mr. Robinette when he was with the 
Lumholtz Expedition in 1890-92. Of more southern records we have but few; both 
Sumichrast 4 and Herrera’ record its occurrence in the Valley of Mexico, and the former 
naturalist found it near Orizaba, but we have seen no specimens from either district. 
Neither Sallé nor Boucard or any of our collectors appear to have met with this Owl. 
The life-history of the American Long-eared Owl, as this bird is called in North 
America, has been fully given by Capt. Bendire® and Dr. Fisher!°, and the latter 
author has drawn up statistics showing the nature of the food consumed by this Owl. 
From this it appears that mice and a few other mammals form by far the largest 
proportion of its diet; a few birds are eaten and occasionally insects. 
2. Asio clamator. 
? Strix mexicanus, Gm. Syst. Nat. i. p. 288 ?? 
Bubo clamator, Vieill. Ois. Am. Sept. i. p. 52, t. 20 
Asio clamator, Berl. & Stolam. P. Z.S. 1892, p. 387°. 
Otus mexicanus, Pelz. Orn. Bras. p. 10+. 
Bubo mexicanus, Ridgw. in Baird, Brew., & Ridgw. N. Am. Birds, ili. p. 61°. 
Asio mexicanus, Sharpe, Cat. Birds Brit. Mus. ii. p..231°. 
Supra cervinus, fusco irroratus, plumis singulis late fuscis: subtus cervinus, plumis omnibus stria rhachidali 
nigricante nullo modo transfasciatis ; facie tota albida nigro circumcincta, dimidio plumarum terminali 
late fusco transfasciato; cauda cervina, fusco transfasciata. Leng. tota circa 140, alee 9°3, caudse 53, 
tarsi 2-1. (Descr. exempl. ex Paraiso, Panama, Mus. nostr.) 
Hab. Panama (Arcé, in Mus. Brit.®), Paraiso Station (A. Hughes).—SouTH AMERICA 
generally ®; Prrv ®. 
This Owl has usually passed under Gmelin’s name Striz mexicanus, which was 
