196 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



March 1892, p. 226. (New name for Mynnclastcs corvinns Lawrence 1863.) 

 Myrmclastes ceterus Bangs, Proc. New England Zool. Club, vol. 2, September 

 20, 1900, p. 25. (Loma de Leon, Canal Zone, Panama.) 



Characters. — Male resembles that of G. n. erratilis; female, duller, 

 more grayish brown above, including the crown ; lighter, more 

 cinnamon-brown on lower surface. 



A male collected at Cafiita, Panama, on the lower Rio Bayano, 

 had the iris dark reddish brown ; bare skin of head bright blue, paler 

 on the frontal area ; bill black ; tarsus and toes neutral gray ; claws 

 dark neutral gray. In this bird the periosteum overlying the anterior 

 frontal area of the skull, underneath the bare blue skin of the fore- 

 head, was deep black. 



Measurements. — Males (10 from central and eastern Panama), 

 wing 73.3-78.6 (75.6). tail 54.6-59.2 (56.7), culmen from base 21.0- 

 22.5 (21.2), tarsus 29.3-30.7 (30.1) mm. 



Females (10 from central and eastern Panama), wing 69.0-74.9 

 (71.7), tail 52.6-57.0 (53.6), culmen from base 20.2-21.4 (20.9), 

 tarsus 29.2-30.9 (29.9) mm. 



Resident. Found locally in lowland forests on the Pacific slope 

 from the northern Canal Zone and Panama City east to eastern 

 Darien ; on the Caribbean side from the Rio Indio in northern Code 

 (El Uracillo) east through the Canal Zone to Mandinga, western 

 San Bias. 



To date, there has been no report of this bird on the Pacific side 

 west of the Canal Zone. To the east it is known from Pacora, and 

 from Caiiita on the lower Rio Bayano above El Llano. From Darien 

 there is a specimen in the Academy of Natural Sciences taken at 

 Garachine (Bond and de Schauensee, Acad. Nat. Sci. Philadelphia, 

 Mon. 6, 1944, p. 33). Griscom (Bull. Mus. Comp. Zool., vol. 69, 

 1929, p. 168) recorded a female taken by Benson at Cana on Cerro 

 Pirre. I secured a male March 23, 1959, on the Rio Chucunaque 

 near the mouth of Quebrada San Felix. Specimens in the American 

 Museum of Natural History come from El Real, Boca de Cupe, and 

 Sucubti on the upper Rio Chucunaque, the latter collected by J. L. 

 Baer. 



On the Caribbean side, we took a pair on the upper Rio Indio at El 

 Uracillo, northern Code ; there were numerous early records from the 

 Canal Zone, near the Rio Chagres at Tabernilla, Lion Hill, and 

 Gatun ; Goldman secured one at Portobelo, Colon, and I found it at 

 Mandinga, western San Bias. The species seems to be one that has 

 become less common in recent years. 



In the stomach of the one taken by E. A. Goldman on May 30, 



