532 Annals of the Carnegie Museum. 



Chlorostilbon inhabiting the highlands and northwestern Pacific coast 

 region of Costa Rica, but after carefully examining a large amount of 

 material, I have reached the conclusion that but one form is found 

 there, which must be known as a subspecies of the Mexican bird, C. 

 caniveti. The difference between Costa Rican and Mexican birds is 

 very obvious and constant. This bird frequents shrubbery, the edges 

 of the forest, and second-growth scrub, and is nowhere very abundant. 

 It is not found on the Caribbean watershed, except at points above 

 2,000 feet, apparently not liking the excessive humidity. It spreads 

 over the entire portion of the central highlands and the Pacific coast 

 region of Nicoya and Guanacaste, but in southwestern Costa Rica it 

 is replaced by the succeeding species. 



248. Chlorostilbon assimilis Lawrence. 



Chlorostilbon assimilis Lawrence, Ann. Lye. N. Y., VII, 292 (Lion Hill, Panama 

 [M* Leannan]). — Cherrie, Expl. Zool. en C. R., 1891-2, 1893, 44 (Boruca). 

 ; — Salvin, Cat. Birds Brit. Mus., XVI, 1892, 54 (Chiriqui and Panama). — ■ 

 Salvin and Godman, Biol. Centr.-Am., Aves, II, 1892, 265 (Chiriqui and 

 Panama). — Hartert, Tierr., 1900, 76 (Panama). — Bangs, Auk, XXIV. 

 1907, 295 (Boruca). 



Acad. Nat. Sci. Philadelphia: Dota Mountains (Underwood). 



Carnegie Museum: Boruca and Buenos Aires de Terraba (Carriker). 



Four skins. 



Lawrence records this species from Cartago, but I cannot think that 

 he was right, although it is possible that it may have straggled that far 

 up. Its Costa Rican range seems to be confined to the southwestern 

 Pacific coast region, embracing the Terraba Valley and a part of the 

 Dota Mountains. I saw numerous individuals in the hills above 

 Boruca and around Buenos Aires, always in the second-growth scrub 

 or in the shrubbery around the borders of the " sabanas." 



249. Panterpe insignis Cabanis and Heine. 



Panterpe insignis Cabanis and Heine., Mus. Hein., Ill, 43. — -Cabanis, Jour, 

 fur Orn., 1862, 164 (San Jose [Hoffman]). — Lawrence, Ann. Lye. N. Y., 

 IX, 1868, 124 (La Candelaria [Frantzius], Irazii [Cooper]). — Frantzius, 

 Jour, fur Orn., 1869, 316 (Irazii [Cooper]). — Boucard, P. Z. S., 1878, 71 

 (Irazvi). — Ridgway, Proc. U. S. Nat. Mus., Ill, 1880, 317 (Costa Rica). — ■ 

 Zeledon, An. Mus. Nac. de C. R., I, 1887, 122 (Faldas de Irazu). — ■ Salvin, 

 Cat. Birds Brit. Mus., XVI, 1892, 158 (Volcan de Cartago [Arce]). —Sal- 

 vin and Godman, Biol. Centr.-Am., Aves, II, 1892, 283 (Costa Rica and 

 Chiriqui). — Hartert, Tierr., 1900, 82 (Costa Rica and Chiriqui). — Bangs, 



