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BIRDS OF THE REPUBLIC OF PANAMA PART 4 



110), who says "I have one adult bird from Boquete, Chiriqui, that is 

 absolutely typical." This is probably MCZ no. 115194, sex ?, "Bo- 

 queti," Chiriqui, no date, from the Bangs collection. The catalogue 

 gives no further detail, except an indication that the skin may have 

 been entered about 1901. This bird has the forehead and band across 

 the hindneck blue, and fully agrees with verticalis. 



Two others were collected at Calovevora, Veraguas, on the Carib- 

 bean slope. A male collected by Arce, now BMNH no. 85.3.10.208, 

 has the blue between the lores typical of verticalis, as well as the nuchal 

 stripe. AMNH no. 246930, collected by R. R. Benson, at Calovevora 

 (marked Veraguas, but possibly extreme eastern Bocas del Toro) has 

 the blue on the forehead present, but restricted in extent. AMNH no. 

 187705-06, from Santa Fe, Veraguas, also collected by Benson, are 

 typical of verticalis in the amount of blue on the forehead. These speci- 

 mens are the basis for Griscom's listing of the race in Veraguas (Bull. 

 Mus. Comp. Zool., vol. 78, 1935, p. 363). 



A specimen (USNM no. 61990), collected by Arce at Calobre, Vera- 

 guas, has the feathers on the forehead partly missing, but the few that 

 remain have a bluish cast in contrast to the bright green of the crown, 

 thus showing an approach to verticalis. It appears that intergradation 

 between verticalis and viridiceps takes place through the low divide of 

 eastern Veraguas and probably western Code. 



The specimen cited in Salvin and Godman (Biol. Centr.-Amer., 

 Aves, vol. 1, 1883, p. 210) collected by McLeannan at "line of railway" 

 is probably the 1862 specimen Ridgway used as the type of S. p. 

 viridiceps. 



N. G. Smith reports (in litt. to Eisenmann) hearing this species, 

 presumably verticalis, in Bocas del Toro in forest near the Changuinola- 

 Almirante Canal, during late March 1967. 



Slud (Bull. Am. Mus. Nat. Hist., vol. 128, 1964, p. 309) mentions 

 various vocalizations and distinguishes between the songs of the two 

 races, saying verticalis has a musical usually three-note cheeur-cheeur- 

 cheeur on the same level, while viridiceps has a three- or four- syllable 

 chatter, chyuh-chyuh-chyuh-chyuh or an almost "spinking" pii-pii-pii. 

 My own notes show that the song varies within Panama, but this con- 

 stant singer is almost impossible to locate in the tall trees it inhabits and 

 I have never been able to collect a singing bird. It is seen most often 

 when foraging with a mixed flock. At Santa Clara, near Cerro Picacho, 

 in Chiriqui 1 heard several giving a four-note song on March 16 and 

 19, 1954. Near Puerto Armuelles, on the hillslope above the terminus 



