Carriker : List of the Birds of Costa Rica. 749 



Catharus fumosus Ridgway, Proc. U. S. Nat. Mus., X, 1888, 505 (Costa Rica, 



Oct. 20, 1884 [Zeledon]). — Zeledon, An. Mus. Nac. de C. R., I, 1887, 104 



(Jimenez). 

 Catharus mexicanus mexicanus Ridgway, Birds N. and Mid. Amer., IV, io°7t 



22, part (southern Mexico to Panama; — Costa Rica: Jimenez, Tucurriqui, 



Irazu, Miravalles, Bonilla, Turrialba). 

 Catharus mexicanus fumosus Ridgway, Birds N. and Mid. Amer., IV, 1907, 24 



(highlands of Costa Rica, precise locality unknown). 



Bangs Collection: Carrillo, La Vijagua, Cerro de Santa Maria (Under- 

 wood). 

 Fleming Collection: Cariblanco de Sarapiqui (Underwood). 

 Carnegie Museum: Volcan de Irazu, Volcan de Turrialba, 2,000 feet, 

 Guacimo, Carrillo (Carriker). Eight specimens. 



The name Catharus fumosus Ridgway was applied to a slightly imma- 

 ture specimen of an otherwise normal bird of the Costa Rican type of C. 

 mexicanus. The remainder of the Costa Rican specimens examined Mr. 

 Ridgway placed under true C. mexicanus, leaving a supposed subspecies 

 with a range in the middle of the range of the species from which it was 

 separated. However, all Costa Rican birds are very different from true 

 C. mexicanus of Vera Cruz, which fact was overlooked by Mr. Ridgway, 

 and they must therefore be known under the name Catharus mexicanus 

 fumosus (Ridgway), which name, although not really meant for the birds 

 in question, must nevertheless be used for them. 



This thrush is found on the Caribbean slope of the northern half of 

 Costa Rica, from 1,000 to about 5,000 feet, and on the Pacific slope in the 

 extreme northwestern portion of the country, probably from the Volcan 

 de Miravalles northward. It is found only in heavy, humid forest, and 

 as a rule seeks out the darkest parts. I found it abundant and breeding 

 on the lower foothills to the north of the Volcan de Turrialba at an altitude 

 of about 2,000 feet. Two nests were taken on April 20, 1903, containing 

 two eggs each, both with incubation just begun. The nest is made almost 

 entirely of green moss, with a few blades of grass in the bottom, and with 

 the inner portion strengthened with rootlets. The lining is composed 

 entirely of skeletonized leaves, which gives a beautiful effect in contrast 

 with the green moss. Both were placed in small palms in the dark forest, 

 about five feet from the ground. The eggs are pinkish-white, very thickly 

 and finely speckled with bright reddish-brown over the entire surface, but 

 heavier at the larger end. Average measurements: 24X18 mm. 



