754 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Bubo virginiarms mayensis Nelson, Proc. Biol. Soc. Wash., xiv, Sept. 25, 1901, 



170 (Chichen Itza, Yucatan; coll. U. S. Nat. Mus.). 

 Bubo magellanieus mayensis Bangs, Proc. Biol. Soc. Wash., xxx, 1908, 44 (Manatee 



District, Brit. Honduras; crit.). 

 Asio magellanieus mayensis Oberholser, Proc. U. S. Nat. Mus., xxvii, Jan. 22, 



1904, 181 (monogr.). 



BUBO VmGINIANUS MESEMBRINUS (Oberholser). 



COSTA KICAN HOSHED OWL. 



Similar in coloration to more fulvescent examples of B. v. virgini- 

 anus but the tawny color intensified (more rufescent) and more preva- 

 lent, and size decidedly less. 



Adult female.— Wmg, 340; tail, 198; culmen (from cere), 29." 

 Costa Rica (San Jos6) ; western Panama (Chitra, Ver&gua) . 



Bubo virginiarms (not Strix virginiana Gmelin) Lawrence, Ann. Lye. N. Y., ix, 

 1868, 132 (San Jose, Costa Rica).— Frantzius, Joum. fiir Cm., 1869, 366 

 (Costa Rica) .—Salvin, Proc. Zool. Soc. Lond., 1870, 216 (Chitra, Veragua).— 

 Zbled6n. Anal. Mus. Nac. C. R., i, 1887, 125 (Costa Rica).— Salvin and 

 GoDMAN, Biol. Centr.-Am., Aves, iii, 1897, 12, part (San Jose, Costa Rica; 

 Chitra, Veragua). 



Bubo virginianus, var. virginiamis Ridgwat, in Baird, Brewer, and Ridgway, 

 Hist. N. Am. Birds, iii, 1874, 62, part (San Jose, Costa Rica; crit.). 



Asio magellanieus m^sembrinu^ Oberholser, Proc. U. S. Nat. Mus., xxvii, Jan. 

 22, 1904, 179 (San Jose, Costa Rica; coll. U. S. Nat. Mus.). 



Bubo virginianus mesemhrinus Carrikbh, Ann. Carnegie Mus., vi, Sept. 7, 1910, 

 473 (Costa Rica). 



Genus PULSATRIX Kaup. 



Pulsatrix Kaup, Isis, 1848, 771. (Type, Strix torqaata Daudin=iS'. perspicillata 

 Latham.) 



Large Bubonidse (wing about 305-360 mm.) without ear-tufts but 

 with the ear-conch relatively small, simple, nonoperculate (the 

 two of opposite sides symmetrical), and with very stout bill and feet, 

 the latter densely feathered at least on basal portion of toes. 



BUI relatively large and very strong; top of cere decidedly shorter 

 than chord of cuhnen, very broad, very slightly convex or nearly 

 straight. Nostril broadly oval and obUquely vertical, or nearly cir- 

 cular, in upper anterior edge of cere. Wing rather long, the longest 

 primaries exceeding distal secondaries by nearly one-third the total 

 length of wing; sixth and seventh, or fifth, sixth, and seventh, * pri- 

 maries longest, the ninth" intermediate between second and third, ''or 



" One specimen (the type). Adult male not seen. 



6 Fifth and sixth, or fifth, sixth, and seventh, from ouitside, not counting rudimen- 

 tary eleventh primary. ^ 

 c Second from outside, 

 f* Eighth and ninth from outside. 



