232 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Oydorhis mbflavescms Cabanis, Journ. fiir Orn., viii, Nov, 1860 (pub. May, 1861), 

 405 (Costa Bica; coll. Berlin Mus.); 1861, 93 (do.)-— Sclater, Cat. Am. 

 Birds, 1862, 359 (Costa Rica).— Bated, Review Am. Birds, 1866, 388 (Dota, 

 Barranca, and San Jos6, Costa Bica).— Laweence, Ann. Lye. N. Y., ix, 1868, 

 97 (DotaMts.; San Jos6).— Salvin, Proc. Zool. Soc. Lond., 1870, 184 (Volcan 

 de Chiriqui, Veragua). — Feantzids, Journ. fiir Orn., 1869, 295 (Dota, Costa 

 Bica) . 



C[yclorhis] subflavescens Salvin, Ibis, 1869, 313 (Costa Rica). 



Clyclorhis] flavipectm subflavescens Sclatee, Ibis, 1887, 322, in text (Costa Bica; 

 Veragua). — Beelepsch, Ibis, 1888, 85, in text (crit.). 



Cyclorhis flavipecius subflavescens Allen, Bull. Am. Mus. N. H., ii, no. 3, June, 

 1889, 131, 134 (Costa Bica; diagnosis).— Berlepsch, Ibis, 1888, 91.— Cheerie, 

 Proc. U. S. Nat. Mus., xiv. 1891, 529 (Costa Bica; crit.); Auk, ix, 1892, 23 

 (San Jos6, Costa Rica; song). — Bangs, Proc. New Engl. Zool. Club, iii, 1902, 

 59 (Boquete, Chiriqui, 4,000 to 4,800 ft.). 



Cyclorhis flaviventris (not of Lafresnaye) Laweence, Ann. Lye. N. Y., ix, 1868, 

 97 (Gulf of Nicdya, Costa Bica). 



[Cyclorhis'] flavipectus (not of Sclater, 1858) Sclatee and Salvin, Nom. Av. Neotr., 

 1873, 13, part (Costa Rica). 



Oydorhis flavipectm Boucaed, Proc. Zool. Soc. Lond., 1878, 53 (San Jos6, Costa 

 Rica).— Gadow, Cat. Birds Brit. Mus., viii, 1883, 320, part (Costa Rife).- 

 Salvin and Godman, Biol. Centr.-Am., Aves, i, 1883, 212, part (Barranca, 

 Dota Mts., San Jos6, Tucurriqui, Bebedero, Nicoya, and Irazii, Costa Rica; 

 Volcan de Cbiriqui, Veragua). — Zeledon, Anal.-Mus. Nac. Costa Bica, i, 

 1887, 108 (Dota, Costa Rica).— Sclatee, Ibis, 1887, 322, part (Costa Rica; 

 "Veragua; crit.). — Beelepsch, Ibis, 1888, 85, part (Costa Rica, Veragua). 



Family LANIID^. 



TEE SEBIXE8. 



Medium-sized to rather small dentirostral " ten-primaried " acuti- 

 plantar Oscines with strongly hooked and toothed compressed l)ill, 

 rather short and distinctly scutellate tarsi, rather short, rounded wing, 

 the nostrils non-operoulate, pierced into the almost or quite completely 

 ossified nasal capsule, and more or less concealed by bristle-pointed 

 antroi'se feathers of the frontal antise. 



Bill shorter than head, strong, compressed, almost abruptly hooked 

 at tip, the maxillary unguis preceded by a distinct tomial notch and 

 tooth; mandible with the tip acute and bent upward, the tomiam more 

 or less incised, but not notched nor toothed, subterminally; tarsus 

 equal to or longer than commissure, with the acrotarsium distinctly 

 scutellate, the outer plate of the planta tarsi somtimes also distinctly 

 subdivided; middle toe, with claw, decidedly shorter than tarsus; 

 lateral toes of equal length, their claws reaching about to base of 

 middle claw; hallux (without claw) shorter than lateral toes (without 

 claws) but much stouter; basal phalanx of middle toe adherent for 

 nearly its entire length to outer toe, but united to inner toe at base 

 only; claws moderately developed, strongly curved, rather sharp. 

 Wing rather short, rounded; outermost (tenth) primary sometimes 

 more than half as long as ninth, usually less, sometimes rudimentary; 



