232 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Oyclorhis subfiavescens Cabanis, Journ. fiir Orn., viii, Nov, 1860 (pub. May, 1861), 

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

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

 Barranca, and San Jose, Costa Rica). — Lawrence, Ann. Lye. N. Y., ix, 1868, 

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

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

 Rica) . 



Clydorhiji'] auhflavescens Salvin, Ibis, 1869, 313 (Costa Rica). 



C\_ydorhis] flavipectus subflavescens Sclater, Ibis, 1887, 322, in text (C'osta Rica; 

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



Cydorhis flavipectus xubflavescens Allen, Bull. Am. Mus. N. H., ii, no. 3, June, 

 1889, 131, 134 (Costa Rica; diagnosis). — Berlepsch, Ibis, 1888, 91. — Cherrie, 

 Proc. U. S. Nat. Mus., xiv, 1891, 529 (Costa Rica; 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.). 



Cydorhis flaiiventris (not of Lafresnaye) Lawrence, Ann. Lye. N. Y., ix, 1868, 

 97 (Gulf of Nicoya, Costa Rica). 



[Oydorhis] flavipedus (not of Sclater, 1858) Sclater and Salvin, Nom. A v. Neotr., 

 1873, 13, part (Costa Rica). 



Cydorhis flavipedus Boucard, Proc. Zool. Soc. Lond., 1878, 53 (San Jose, Costa 

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

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

 Dota Mts., San Jose, Tucurriqui, Bebedero, Nicoya, and Irazu, Costa Rica; 

 Volcan de Chiriqui, Veragua). — Zeledon, Anal. Mus. Nae. Costa Rica, i, 

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

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



Family LANIID^. 



THE SHRIKES. 



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

 plantar Oscines with strongly hooked and toothed compressed bill, 

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

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

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

 antrorse feathers of the frontal antiffi. 



Bill shorter than head, strong, compressed, almost abrupth^ hooked 

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

 tooth; mandible with the tip acute and bent upward, the tomium 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, decided!}' 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 moderatel}^ developed, strongly curved, rather sharp. 

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

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



