380 



P.T^TJ.ETTlSr no, TTXTTED STATES K.\TTONAE MUSEUM. 



tail, 20-23 (21.1); exposed culmen, 10.5 11.5 (11.1); tarsus, 1.3-13.5 

 (13.2); middle toe, 7.5-8 (7.9). « 



Costa Rica (Valza; Rio Naraiijo; Pozo Azul de Firris; Pozo del 

 Pital; Las Trojas; I^a Concepcion; Carrillo) and Panama (Panama 

 City; Lion Hill; Lomo Lleno; Rio Truando; Santa Fe de A^eragua; 

 Biigaba; Divala; Yolcan de Chiri(iui) ; British Guiana (Bartica Grove; 

 Albina River)?'* Cayenne (Oya^oc).^ 



PlatyrhynchiiH cancrowa (not of Temniinck) IvAwrence, Ann. IjVc. N. Y., vii, 

 ]862, 330 (Lion Hill Station, Panama). 



Platyrhynchvs supercilinris Lawrence, Ibis, April, ]S(i3, 184 (Lion Hill, Panama 

 R. R.; coll. G. N. Lawrence); Ann. Lye. N. Y., viii, 1863, 7 (Lion Hill); ix, 

 1868, 110 (Valza, flosta Rica).— Salvin, Proc. Zool. S(k\ Lond., 1867, 146 (Vol- 

 can de Chiriqui and Santa Fe, de Veragua); 1870, 196 (Bngaba, Panama); Ibis, 

 1885, 292 (Bartica Grove, Briti.sh (Tuiana; crit.). — Frantzit.s, Journ. fiir 

 Orn., 1869, 307 (Costa Rica).— Sclater, Cat. Birds Brit. Mns., xiv, 1888, 68 

 (Santa Fe, Yolcan de Cliiriqui, and Bugaba, Panama; Bartica Grove and 

 Albina R., British Guiana; Oyapoc, Cayenne). — Salvin and Godman, Biol. 

 Centr.-Am.,Aves, ii, 1888, 6.— Bangs, Proc. New Engl. Zool. Club, iii, 1902, 

 .34 (Yolcan de Chiriqui, Panama, 2,000 ft.). 



[Plaiyrhynrhiif<] sii perciliaris Gray, Hand-list, i, 1869, 347, no. 5242. — Sclater and 

 Salvin, Norn. Av. Neotr., 1873, 45.— Sharpe, Hand-list, iii, 1901, 101. 



Placostomits sujJerciUans Ridgway, Proc. Biol. Soc. Wash., xviii, Sept. 2, 1905, 

 208. 



GenLis PLATYTRICCUS Ridgway. 



Plntyfncnifi <• Ridgway, Proc. Biol. Soc. Wash., xviii, Oct. 17, 1905, 211. (Type 

 Platyrhyyichiis raniToiiriniis Sclater and Salvin.) 



Very small Tyrannida^ (length not more than 00 mm., wing about 

 53-62 mm.) with the bill excessively broad and fiat (its width at base 

 about equal t»> length of exposed culmen), and tail less than half as 

 long as wing. 



"■ Nine specimens. 



Specimens from Costa Rica average slightly larger than those from Panama, but I am 

 Rdl aV)le to discern any difference in coloration. 



'' Accoriling to Sclater; but it is possible specimens from these localities may be sub- 

 specifically separable. 



fTtAoTtK, flat, wide, broad, and TfnKKui, a small binl. 



