Carriker : List of the Birds of Costa Rica. 747 



526. Catharus frantzii frantzii Cabanis. 



Catharus frantzii Cabanis, Jour, fur Orn., i860, 323 (Volcan de Irazii, Costa 

 Rica [Frantzius]). — Baird, Rev. Am. Birds, 1864, 9 (Costa Rica). — Salvin, 

 P. Z. S., 1866, 69, part (Costa Rica). — Lawrence, Ann. Lye. N. Y., IX, 

 1868, 90 (San Jose [Frantzius], Rancho Redondo [F. Carmiol]). — Frant- 

 zius, Jour, fiir Orn., 1869, 289 (Potrero Cerrado, La Palma). — Boucard, 

 P. Z. S., 1878, 50 (Navarro). — Ridgw ay, Proc. U. S. Nat. Mus., V, 1882, 

 494 (Irazii [Nutting]). — - Salvin and Godman, Biol. Centr.-Am., Aves, I, 

 1878, 4 (Costa Rican references). — Seebohm, Cat. Birds Brit. Mus., V, 

 1881, 290 (Costa Rica). — Zeledon, Proc. U. S. Nat. Mus., VIII, 1885, 104 

 (Costa Rica); An. Mus. Nac. de C. R., I, 1887, 104 (Voican de Irazii). 



Catharus frantzii frantzii Ridgway, Birds N. and Mid. Amer., IV, 1907, 28 

 (Volcan de Chiriqui, Panama, and Costa Rica: Volcanoes de Irazii and Tur- 

 rialba, La Estrella de Cartago, San Jose, La Palma de San Jose, Rancho 

 Redondo, Potrero, Cerrado, Navarro). 



U. S. Nat. Museum: Coliblanco (Ridgway and Zeledon) ; Barba (Alfaro) ; 



El Copey, La Lagunaria, Las Vueltas and Santa Maria de Dota (Ba- 



sulto). 

 Bangs Collection: Azahar de Cartago, Escazu, La Hondura (Underwood). 

 C. H. Lankester Collection: Vara Blanca de Sarapiqui. 

 Carnegie Museum: Volcan de Irazii, Ujurras de Terraba (Carriker). 



Three skins. 



This species is found a little higher up than the succeeding, although 

 their ranges overlap for a short distance. It seems to be present over the 

 whole of the higher portions of the country, wherever an altitude of about 

 6,000 feet is reached, although specimens have been taken as low down as 

 5,000 feet, but it does not reach timber-line on the high volcanoes, being 

 very rarely seen in company with C. gracilirostris, which occupies a still 

 higher range. They are not common anywhere, and only an occasional 

 bird is picked up, although they may be more abundant than appears on 

 account of their extreme shyness. They are silent, solitary, and seek out 

 the dark cool ravines in the heavy forest. I took two nests on the Volcan 

 de Irazii, April 13 and 14, 1902, each containing two eggs, one set being 

 quite fresh and the other slightly incubated. The nest, like that of C- 

 mexicanus fumosus, is made entirely of green moss, but lined with fine 

 grass and rootlets. It is very large and bulky for the size of the bird, but 

 the cavity of the nest is small. They were both placed on sprays of bamboo 

 hanging over the side of a deep ravine, and about seven feet from the 

 ground. The eggs are pale blue, thickly speckled and blotched with cin- 

 namon-rufous and lilac, thickest about the larger end, in one egg forming 

 a cap of rufous and lilac. Measurements: 24.5 to 25.5X18 to 19 mm. 



