BIRDS OP NORTH AND MIDDLE AMERICA. 389 



wSoiithern Mexico, in States of Vera Cruz (Jalapa ; Cordova ; Buena 

 Vista; Santa Lucrecia), Oaxaca (wSanta Efigenia), and Yucatan 

 (Puerto Morelos ; La Vega) ; Guatemala (Clioctum ; Volcan de Fuego ; 

 La Trinidad); Costa Kica (Dota; Val; Juan Vinas; Rio Naranjo; 

 Pozo Azul de Pirris; Pozo del Pital; Azahar de Cartago; Irazu), 

 and northern Panama (Bo({uete; Divala; Calobre; Calovevora; Bo- 

 gaba; Santa Ve de Veragua; A^olcan de Chiriqui). 



Cyclorhynchus brcvirostris Cabanis. in Wiegmann's Arcliiv. fiir Natiirg., 1847, i, 

 249. — Bonaparte, Consp. Av., i, 1850, 187 (Mexico). — Sclater, Proc. Zool. 

 Soc. Lond., 1856, 296 (Cordova, Vera Cruz; crit.); Ibis, 1859, 443 (Cordova).— 

 Sclater and Salvin, Ibis, 1860, 399 (Choctuni, Guatemala). 



R[hynchoq/clus] brcvirostris Gray, Gen. Birds, iii, 1849, App., II. — Cabanis and 

 Heine, Mus. Hein., ii, 1859, 57 (Jalapa, Vera Cruz). 



Rhynchocyclus brevirostris Sclater, Cat. Am. Birds, 1862, 220 (Mexico); Cat. Birds 

 Brit. Mus., xiv, 1888, 166 (Cordova, Vera Cruz; Choctum and Volcan de 

 Fuego, Guatemala; Irazu district, Costa Rica; Santa Fe, Calovevora, Volcan 

 de Cliiriqui, and Bugaba, Panama). — Salvin, Proc. Zool. Soc. Lond., 1867, 

 148 (Santa Fe de Veragua; crit.); 1870, 197 (Volcan de Chiriqui, Calovevora, 

 and Bugaba, Panama; crit.). — Salvin and Godman, Biol. Centr.-Am., Aves, 

 ii, 1888, 8.— Bangs Proc. New Engl. Zool. Chib, iii, 1902, 35 (Boquete, etc., 

 Panama, 4,000 to 7,500 ft.). 



[Rhynchoq/dus] brevirostris Sclater and Salvin, Nom. Av. Neotr., 1873, 49.— 

 Sharpe, Hand-list, iii, 1901, 101. 



[Elainia] brcvirostris Gray, Hand-list, i, 1869, 354, no. 5371. 



Rhynchocyclus mesorhynchus Cabanis, Journ. fiir Orn., Nov., 1865 (published Jan., 

 1866), 414 (Guatemala; coll. Berlin Mus.). 



[Elainia] mesorhyncha Gray, Hand-list, i, 1869, 354, no. 5377. 



Rhyncocyclus (jriseimentalis Lawrence, Ann. Lye. Nat. Hist. N. Y., ix, 1868 (pub. 

 Mar., 1869), 112 (Dota, Costa Rica; coll. U. S. Nat. Mus.).— Salvin, Ibis, 

 1869, 315 (Costa Rica).— Frantzius, Journ. fur Orn., 1869, 307 (Costa Rica). 



Genus RHYNCHOCYCLUS Cabanis and Heine. 



Cyclorhynchus (not Cyclorrhynchus Kaup, 1829) Sundevall, Vet.-Ak. Handl., 

 1835 (1836), 83. (Type, Platyrhynchus olivaceus Temminck.) 



Rhynchocyclus Cabanis and Heine, Mus. Hein., ii, Sept., 1859, 56. (Type, Mus- 

 dpeta flaviventris Maximilian.) 



Similar to Craspedoprion, but bill relatively smaller and narrower, 

 subterminal phalanx of middle toe entirely free from outer toe, and 

 edge of outer web of outermost primary never roughened. 



Bill much shorter than head, rather broadly triangular, nnich 

 depressed, its width at frontal antise about equal to or slightly less 

 than distance from nostril to tip of maxilla and about twice its depth 

 at same point; lateral outlines of bill faintly concave subbasally more 

 decidedly convex subterminally, where rather rapidly converging to 

 the distinctly uncinate tip of maxillq,; exposed culmen about equal to 

 middle toe without claw, distinctly but not sharply ridged, straight 

 basally, then first gradually but finally more strongly decurved to 

 the distinctly uncinate tip of maxilla; gonj'-s very slightly shorter 



