202 



BIRDS OF THE REPUBLIC OF PANAMA PART 4 



f erent from that of C. g. subflavescens, found in Veraguas and Chiriqui 

 to the west. The transition between these two forms in the lowlands 

 east of Santiago, Veraguas, is apparently along the low watershed be- 

 tween the Rio Santa Maria of Code, Herrera, and extreme eastern 

 Veraguas, which flows into the Gulf of Panama, and the Rio Martin 

 Grande, with its tributaries, which empties into the Gulf of Montijo. 

 A specimen from El Villano, in the drainage of the Santa Maria, is 

 easily recognized as perrygoi, while another from La Colorada on a 

 tributary of the Martin Grande, while somewhat intermediate, is to be 

 placed with subflavescens. 



I have named this form for Watson M. Perrygo of the U. S. National 

 Museum, my friend and companion on many days afield in Panama 

 and elsewhere, who shot the first of our specimens of it. 



CYCLARHIS GUJANENSIS FLAVENS Wetmore 



Cyclarhis gujanensis flavens Wetmore, 1950, Proc. Biol. Soc. Washington, 63, p. 

 174. (Chimin, Punta Madrono, Panama, Panama.) 



Characters. — Gray of side of face continues behind crown to form 

 band on upper back; chin and small area in center of abdomen white, 

 rest of undersurface between lemon chrome and lemon yellow. 



Measurements. — Males (3 from Province of Panama), wing 69.2- 

 73.8 (70.0), tail 49.0-52.3 (50.9), oilmen from base 17.7-18.5 (18.1), 

 tarsus 20.5-23.2 (21.7) mm. 



Female (1 from Province of Panama), wing 66.0, tail 53.2, culmen 

 from base 18.5, tarsus 21.6 mm. 



Resident. Known from coastal area of eastern Province of Pan- 

 ama, with specimens from Chimin and Maje. 



In the course of fieldwork in eastern Panama in the dry season of 

 1950 I was fortunate in securing specimens of the peppershrike, which 

 on examination proved to represent an unrecognized form. The birds 

 were found in small numbers in thickets back of the beach at the mouth 

 of Rio Maje, and at the mouth of the Rio Chimin, near Punta Madrono 

 opposite Chimin; these localities are on the coast a short distance from 

 the Darien border. It is probable that the birds I recorded in 1949 at 

 Chepo on the lower Rio Mamoni are this race, and it is practically cer- 

 tain that this is the form obtained in 1941 at Garachine by the Fifth 

 George Vanderbilt Expedition (Bond and de Schauensee, Acad. Nat. 

 Sci. Philadelphia, Mon. no. 6, 1944, p. 40). Likewise, a bird I found 

 singing on Barro Colorado Island in the Canal Zone on March 9-10, 

 1950 — the only record to date for the Zone — and a pair Ridgely (1976, 



