332 BIRDS OF THE REPUBLIC OF PANAMA — PART 2 



From the Pacific side there are 2 in the American Museum of 

 Natural History taken by W. B. Richardson at Chorrera, in the 

 Province of Panama, west of the Canal Zone. 



The stomach of 1 collected by Goldman, I found filled with remains 

 of small black hymenoptera. Another held small hymenoptera and a 

 small spider. 



Goldman recorded them in 1911 as one of the more common hum- 

 mingbirds in the region between Gatun and Corozal, feeding especially 

 at the flowers of the false banana or platanillo. He reported 1 bath- 

 ing during flight by dipping bill, wings, and tail in the shallow water 

 of a riffle in a stream, wetting itself and then perching to flutter and 

 wipe its bill. One while resting on an exposed perch on a slender 

 twig sang a squeaky song of two notes just alike, repeating the pair 

 at brief intervals of a second or so. This was accompanied by turning 

 the head and flitting the wings and tail. 



Near the Rio Mamoni, in the section known as Chepo Vie jo, 1 

 found them common around flowers in low, rather open monte. 

 They were perching here from 3 to 6 meters above the ground. In 

 Zanja Limon 1 was attracted by my call and flew directly toward me 

 with the light reflecting brilliantly from its green breast. In 1950, a 

 few ranged along the Ouebrada Cauchero on the lower slopes of 

 Cerro Chucanti. One came regularly in evening below our camp to 

 dart and poise over a pool in the stream in its capture of flying insects. 

 One of our daily pleasures in this remote and primitive spot was 

 the play of reflected light from the colorful plumage of this small bird 

 that approached fearlessly as we worked and wrote in our open-sided 

 shelter above the stream. 



AMAZILIA EDWARD MARGARITARUM (Griscom) 



Saucerottia edwardi margaritarum Griscom, Amer. Mus. Nov., no. 282, 

 September 12, 1927, p. 4. (Isla Pedro Gonzalez, Archipielago de la Perlas. 

 Panama.) 



Characters. — Tail varying from coppery green to dull rufous with 

 a bronzy sheen; sides cinnamon-brown in most, especially in the 

 females ; back duller than in A. c. edward. 



Measurements. — Males (11 specimens), wing 53.7-55.7 (54.4), 

 tail 28.6-30.7 (29.4), culmen from base 18.2-20.6 (19.8) mm. 



Females (10 specimens), wing 52.0-53.5 (52.6), tail 28.0-30.8 

 (28.9), culmen from base 19.7-21.6 (20.5) mm. 



Resident. Found throughout the Archipielago de las Perlas, (re- 

 corded from islas del Rey, Caflas, Saboga, Chapera, Bayoneta, 



