Carriker : List of the Birds of Costa Rica. 615 



and Angostura [J. Carmiol]). — Frantzius, Jour, fur Orn., 1869, 305 (Costa 



Rica). — Boucard, P. Z. S., 1878, 61, part (San Carlos). — Zeledon, An. 



Mus. Nac. de C. R., I, 1887, 115, part (Pacuare, Jimenez). — Sclater, Cat. 



Birds Brit. Mus., XV, 1890, 279, part (Valsa [Carmiol]). — Cherrie, Auk, 



VIII, 1891, 193 (Pacuare [Cooper], Jimenez [Cherrie & Alfaro], Carrillo 



[Underwood]). 

 Myrmeciza intermedia Cherrie, Proc. U. S. Nat. Mus., XIV, 1891, 340 (Sipurio 



de Talamanca [Zeledon]). 

 Myrmelastes intermedins Salvin and Godman, Biol. Centr.-Am., Aves, II, 1892, 



227 (Nicaragua to Panama; Costa Rican references). — Carriker, Ann. 



Carnegie Mus., V, i, 1908, 10, in text (crit.). 

 Myrmelastes exsul Hellmayr, Nov. Zool., XII, 1906, 340 (critical). 



U. S. Nat. Museum : Reventazon (Carranza), Jimenez (Alfaro). 



Bangs Collection : La Vijagua and Carrillo (Underwood). 



C. H. Lankester Collection : Cachi. 



Carnegie Museum : Guapiles and Volcan de Turrialba, 2,000 feet 



(Carriker & Crawford), Cuabre, Guacimo, Rio Sicsola, El Hogar 



(Carriker). Seventeen skins. 



Mr. Hellmayr (Nov. Zool., XII, 1906, 340) has proven conclusively 

 that the type of Myrmeciza exsul Sclater came from Panama, and that 

 the Central American bird of the Caribbean lowlands must be known 

 as M. exsul. I am still undecided as to wmether Costa Rican birds 

 differ from typical M. exsul of Panama, not having had sufficient 

 material to settle that question in my own mind. However, the evi- 

 dence at hand seems to indicate that they are the same, and I have 

 thus indicated it by the name here given to the Costa Rican bird. 

 The name of Myrmeciza immaculata Sclater and Salvin, given to 

 Panaman specimens of this species, was given under the erroneous 

 impression that the type of Myrmeciza exsul Sclater came from 

 Ecuador and not Panama. 



Mr. Ridgway states (Proc. Biol. Soc. Wash., XXII, 1909, 74, 

 footnote) that he is unable to find characters justifying the recognition 

 of a genus Myrmelastes as distinguished from Myrmeciza, with which 

 opinion I quite agree, placing all species of the Myrmeciza type under 

 that genus. 



In Costa Rica M. exsul is found only on the Caribbean low- 

 lands and lower slopes, from sea-level up to about 2,000 feet, but is 

 not common above 1,000 feet. It is found only in the heavy dark 

 forests, and is almost entirely terrestrial in its habits, only occasionally 

 hopping about on the elevated roots and in the low bushes. It is very 



