832 Annals of the Carnegie Museum. 



Tangavius <zneus involucratus Fourteenth Suppl. A. O. U. Check-List, Auk, 

 XXV, 1908, 377- 



U. S. Nat. Museum: Guayabo (Ridgway and Zeledon), Bonilla (Ridgway 



and Alfaro). 

 Bangs Collection: San Jose (Underwood). 

 (Underwood in litt.): Cartago and Alajuela. 

 Carnegie Museum: Bebedero and Juan Vinas (Carriker). Two skins. 



The Red-eyed Cowbird is fairly common in many parts of Costa Rica, 

 being found over the entire highlands, wherever the land has been cleared 

 and is under cultivation, or in pasture, as well as on the Caribbean slope 

 down to 1,200 or 1,500 feet, and the whole of the northern Pacific slope 

 and lowlands. It appears to be absent in the southwestern part of the 

 country, south of the Rio Grande de Tarcoles, but is abundant in Nicoya 

 and Guanacaste. Its habits are too well known to deserve further mention. 



648. Cassidix oryzivora mexicana (Lesson). 



Cassidix oryzivora Zeledon, An. Mus. Nac. de C. R., I, 1887, 112 (Costa Rica). 



— Sclater, Cat. Birds Brit. Mus.. XI, 1886, 329, part (no C. R. specimens or 



records).— Sal vin and Godman, Biol. Centr.-Am., Aves, I, 1886, 444, part 



(no Costa Rican record). 

 Cassidix oryzivora violea Ridgway, Birds N. and Mid. Amer., II, 1902, 197, 



part (Costa Rica?; Nicaragua?). 



(Underwood in litt.) : Reventazon. 



Carnegie Museum: Guapiles, March 20, 1903, cf (Carriker & Craw- 

 ford). 



This is the rarest of the family Icteridce in Costa Rica. The only speci- 

 men I have seen of it from Costa Rica is the male collected at Guapiles 

 by Mr. Crawford and myself. Underwood says that he took it at Reven- 

 tazon (La Junta), but I do not know where the specimen is, unless at the 

 Tring Museum. In Mr. Ridgway's "Birds of North and Middle America," 

 he places Costa Rica and Nicaragua under the range of C. c. violea Bangs, 

 with a question, not having seen material from either country. The 

 single bird from Guapiles, Costa Rica, is not violea but typical mexicana. 

 Of course this bird was taken in the extreme northeastern part of Costa 

 Rica, in a region where we would expect to take the northern race rather 

 than the southern, and it may be that, should the bird be found in southern 

 Costa Rica, it would prove to be violea. 



The bird collected was taken in an isolated tree in a large pasture, was 

 quite alone, and no others were seen in the vicinity before or afterwards. 



