GLAUCIDIUM. 35 



Neotropical region, and is represented in Chili by a distinct species, another being found 

 in Cuba. In Central America and Mexico four species occur, of which G. phalasnoides 

 is far the most abundant and widespread. As in many other genera of Owls, nearly 

 all the species possess grey and rufous individuals, most of which at one time or 

 another have had distinct names applied to them. These have now found their proper 

 position, chiefly due to the studies of Dr. Sharpe and Mr. Eidgway. In the following 

 arrangement we differ to a slight extent from both these authorities, but our 

 conclusions being derived from the examination of a very extensive series of specimens 

 seem amply justified. 



With the exception of the next genus, which is a slight modification of the present 

 one, Glaucidium contains the smallest of the American Owls, With no ear-tufts and 

 small ear-opening it belongs to the same section of the family as Speotyto, but differs 

 in having much shorter tarsi, due doubtless to the arboreal life led by its members ; 

 the wings are more rounded, the first or outer primary being short. 



Of the four species of our country, G. phalwnoides is found nearly everywhere ; 

 G. gnoma belongs to Mexico, chiefly the western part, and Guatemala ; G. griseiceps, 

 a local form of the South-American G. pumilum, is found in British Honduras, 

 Guatemala, and Panama ; and G. jardinii, of North-western South America, occurs in 

 Costa Rica alone. 



A. Pileus striatus. 

 1. Glaucidium phalasnoides. 



Strix phalmnoides, Daud. Traite, ii. p. 306 \ 



GlaMcidium phalfBnoides, Salv. P. Z. S. 1870, p. 317'; Ibis, 1889, p. 374"; 1890, p. 89*; Sharpe, 



Cat. Birds Brit. Mus. ii. p. 303'; Boucard, P. Z. S. 1883, p. 456 = ; Eidgw. Pr. U. S. Nat. 



Mus. V. p. 50r; X. p. 593'; Ferrari-Perez, Pr. U. S. Nat. Mus. ix. p. 164'; Herrera, La 



Nat. (3) i. pp. 178, 331"; Zeledon, An. Mus, Nac. Costa Rica, 1887, p. 135"; Bendire, 



Auk, 1888, p. 366''; Life Hist. N. Am. Birds, i. p. 409, 1. 13. £. 17''; Stone, Pr, Ac. Phil. 



1890, p. 305 " ; Cherrie, Auk, 1893, p. 337 " ; Fisher, Bull, U. S. Dep. Agr. no. 9, p. 199 '^ 

 Athene infuscata (Temm.), Scl. P. Z. S. 1856, p. 385 ". 



Glaucidium infuscatum, Scl. & Salv. Ibis, 1859, p. 330 ''; Lawr. Ann. Lye. N. Y. ix, p, 307". 

 Glaucidium ferrugineum, Lawr, Mem, Bost, Soc. N. H. ii, p. 397'°; BuU. U. S. Nat. Mus. no. 4^ 



p, 37 ". 

 Glaucidium jardinii, Scl, & Salv, Ibis, 1859, p. 330 (nee Bp.) '', 

 Glaucidium gnoma, Cab. J. f . Orn. 1863, p. 336 '= ; v. Frantz. J. f, Orn. 1869, p. 336 " ; Lawr. Bull. 



U, S, Nat. Mus, no. 4, p. 37 '' ; Sumichrast, La Nat, v. p. 337 '°. 

 Glaucidium infuscatum, var. gnoma, Ridgw. Pr. Bost, Soc, N, H, 1873, p. 63 " ; Lawr. Mem, Bost. 



Soc, N. H, ii. p. 298 ^^ 

 Glaucidium ridgwayi, Sharpe, Ibis, 1875, pp. 55 "', 259 '° ; Cat. Birds Brit. Mus. ii. p. 305 '' ; 



Sumichrast, La Nat. v. p. 337 ''. 

 Glaucidium, sp., Salv. P, Z, S, 1867, p. 158 '^ 



Supra griseo-umbrinum, intersoapulio immaculato, uropygio rufeseentiore, capite toto summo albo stiiato, 



BIOL. CENTR.-AMER., Aves, Vol, III., November 1897, 5 



