600 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



the Bubonidae.'^ The range of Tyto is nearly cosmopolitan, but 

 there is no representative in Madagascar, New Zealand, the Hawaiian 

 Islands, nor in colder regions. About twenty-seven species (including 

 subspecies) are recognized, of which nine are American. 



Genus TYTO Billberg. 



Aluco (not of Link, 1807) & Fleming, Philos. Zool., ii, 1822,236. (Type, by 



monotypy, Strix flammea Linnaeus, 1766, not of Pontoppidan, 1763, =Strix 



alba Scopoli. See Newton, Ibis, 1876, 104; Allen, Auk, xxv, 1908, 288-291.) 

 Tyto c Billberg, Synopsis Faunae Scand., i, pars 2, 1828, tab. A. (New name 



for Strix Savigny nee Linnaeus; type, Strix flammea Linnaeus, 1766, not of 



Pontoppidan, 1763, =S. alba Scopoli. See Mathews, Novit. Zool., xvii, 1910, 



500.) 

 Flammea Fournel, Fauna de la Moselle, 1836, 101. (Type, Flammea vulgaris 



Fournel=xS'tn.'C alba Scopoli. See Mathews, Austral Avian Record, i, 1912, 



104.) 

 Hybris Nitzsch, Pterylographiae Avium, Pars prior, 1833, 16. (Type, Strix 



flammea Linn0eus=5'. alba Scopoli.) 

 Stridula Selys-Longschamp, Fauna Belg., 1842, 60. (Type, Strix flammea 



Linnaeus=AS'. alba Scopoli.) 

 Eustrinx Webb and Berthelot, Orn. Canar., 184], 8. (Type, Strix flammea 



Linnaeus=<S'. alba Scopoli.) 

 Megastrix Kaup, Isis, 1848, 769; Trans. Zool. Soc. Lond., iv, pt. vi, 1859, 249. 



(Type, Strix tenebricosa Gould.) 

 Glaux (not of Morris, 1837) Blyth, Journ. Asiat. Soc. Bengal, xix, 1850, 513. 



(Type, Strix Candida Tickell.) 

 Scelostrix Kaup, Jardine's Contr. Om., 1852, 119; Trans. Zool. Soc. Lond., iv, 



pt. vi, 1859, 248. (Type, Strix Candida Tickell.) 

 Dactylostrix Kaup, Jardine's Contr. Om., 1852, 119; Trans. Zool. Soc. Lond., iv, 



pt. vi, 1859, 248. (Type, Strix personata Vigors=5. novas-hollandise Stephens.) 

 Glyphidiura Reichenbach, Av. Syst. Nat., 1850, pi. 92, fig. 2. (Type, Strix 



capensis Smith.) 



Medium-sized Striges (Tytonidge) with complete and conspicuous 

 facial ruff, relatively small ej^es, elongated bill, long legs with feather- 

 ing on posterior side of tarsus reversed (pointed upward), inner toe 

 as long as middle toe, claw of middle toe with inner edge produced 

 and pectinated, tenth (apparent outermost) primary nearly to quite 

 as long as ninth, its inner web not sinuated, tail emarginate, and head 

 without ear-tufts. 



Bill elongated, compressed, the top of cere nearly as long as chord 

 of culmen, straight, somewhat depressed. Nostril opening in anterior 

 end of cere, oval, nearly horizontal. Eyes very small (beadlike), 

 surrounded by a very conspicuous line of differently formed feath- 

 ers — the outline of the facial disk, viewed from the front, distinctly 



a See Beddard, Ibis, 1890, 298. 



^For a genus of Mollusks; Beschr. Nat. Samml. Univ. Rostock, 3 Abth., 1807, 130. 



c Tuvd), the night owl. (Richmond.) 



