342 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



1960. and January 10 and 12. 1961. In 1963, Dr. C. O. Handley. Jr., 

 found this race common on Isla Bastimentos, and collected two males 

 near Punta Vieja on February 8 and 10. In field observation, on 

 January 22, when a small group of males were displaying I found 

 that the sibilant call, the buzzing rattle, and the sudden snap seemed 

 exactly like those of the nominate form of central and eastern 

 Panama. On one occasion several females were gathered separately 

 on a shaded slope where small berries were ripening in the shrubbery. 

 Due to extensive clearing near Changuinola, suitable habitat for 

 manakins has been largely eliminated so that I did not record it there. 

 It should be found, however, toward the hill region inland. The valley 

 of the Rio Sixaola should be checked for possible occurence from 

 Sibube to Guabito. 



MANACUS VITELLINUS AMITINUS Wetmore 



Manaciis vitcUinus aiiiitinus Wetmore, Smithsonian Misc. Coll., vol. 139, no. 2, 

 July 8, 1959, p. 7. (Isla Escudo de Veraguas, Bocas del Toro, Panama.) 



Characters. — Similar to M. v. vitellinus but larger ; bill, tarsi, 

 and toes heavier. 



Adult male with lower back, rump, sides, and under wing coverts 

 darker green. Female and immature male somewhat darker green, 

 with the abdomen less yellowish. 



Measurements. — Males (3 specimens), wing 59.3-61.4 (60.6), tail 

 39.2-42.0 (40.2), culmen from base 14.0-14.8 (14.5), tarsus 23.8- 

 24.5 (24.1) mm. 



Females (2 specimens), wing 59.5, 60.0; tail 38.2, 38.3; culmen 

 from base 14.7, 14.7 ; tarsus 21.0, 21.5 mm. 



Resident. Common on Isla Escudo de Veraguas, Bocas del Toro. 



Larger size in this island race, compared to other subspecies of 

 this manakin, evident when I first saw the bird in the field, is verified 

 by comparison with the measurements of the other forms. They were 

 among the more common of the small birds resident on the island, 

 more so than the Golden Warbler, and standing next to the Bay 

 Wren, the one found in greatest number. At the beginning of March 

 1958, males were not noted in display, nor did I hear them calling. 

 They were found among the branches of the smaller trees, moving 

 about rather slowly, and remaining motionless for several minutes at 

 at time. On March 22, 1963, Charles O. Handley, Jr., secured four 

 caught in mist nets set for bats. These were preserved entire in 

 alcohol. 



Small manakins are liirds of such weak flight that it seems prob- 



