10 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I45 



the Canal Zone to Chorrera in the western sector of the Province of 

 Panama. On the Caribbean side I have taken it in the valley of the 

 Rio Indio west to El Uracillo, in northern Code, and Chilar in west- 

 ern Colon. In the American Museum of Natural History there is one 

 from "Cascajal, Code" collected February 5, 1889. No collector is 

 indicated, but the label and writing are those of Heyde and Lux, 

 whose locality is believed to have been on the Caribbean slope on the 

 Rio Cascajal, a tributary of the Rio Code del Norte. 



The first specimen from Bocas del Toro, an immature female, taken 

 in a mist net and prepared by Rudolf o Hinds, December 16, 1960, 

 marked a considerable extension of range. The prominent buff of the 

 under surface of this bird, which attracted immediate attention, was 

 attributed at the time with some uncertainty to the age of the speci- 

 men, though this color did not agree with that found in other young 

 birds of this species that I had seen. A second skin from Almirante, 

 an adult female, taken September 25, 1962, was as deep buff as 

 the first one, and with the receipt of an adult male secured August 

 23, 1963, it was apparent that a racial difference was indicated. 



Approximately 75 skins of the race languens and 40 of T. i. inornota 

 from central and eastern Colombia have been available for comparison. 

 A faint wash of pale pinkish buff on the center of the abdomen and 

 the under tail coverts is found in a number of these specimens, but in 

 none is this color prominent as it is in the skins from Bocas del Toro. 

 It is most evident in a few skins taken a hundred years ago by Mc- 

 Leannan in which this color seems due in part to discoloration from 

 age as museum specimens. In all individuals in these long series the 

 lesser wing coverts are light blue, with no approach to the darker color 

 of this area in the birds from Bocas del Toro. 



It is probable that the race described here ranges beyond the inter- 

 national boundary in the lowlands of the Caribbean slope of Costa 

 Rica. While no specimens are available at this time. Dr. Paul Slud 

 informs me that he has a few records of Tangara inornata (which he 

 will publish in detail later) from that area. 



The name is from the Latin adjective ravus, in the sense of tawny. 



IV. ADDITIONS TO THE RECORDED LIST OF BIRDS FROM 

 THE REPUBLIC OF PANAMA 



Knot, Calidris canutus rufa (Wilson) : Two immature males taken 

 at Puerto Obaldia, San Bias, on September 12 and 22, 1934, by Hasso 

 von Wedel are the only present report for this species. The specimens, 

 originally in the Herbert Brandt collection at the Museum of the Uni- 



