FAMILY FORMICARIIDAE 195 



1931. Two females in the American Museum of Natural History 

 were collected at Remedies, Chiriqui, by Ludlow Griscom on March 

 24 and 2'b, 1924. The only specimen record for Veraguas is a male 

 in the British Museum that Sclater received from Arce. Until a 

 female is available the race of that area must remain indefinite. 



There are no recent reports, and it is probable that the bird now 

 is very rare in Panama. In Costa Rica, Slud (Bull. Amer. Mus. Nat. 

 Hist., vol. 128, 1964, p. 217) reported it from the southwest in "the 

 general Terraba-Golfo Dulce sector, from the lowlands to the 

 lower limits of the subtropical belt." 



GYMNOCICHLA NUDICEPS CHIROLEUCA Sclater and Salvin 



Gymnocichla chirolenca Sclater and Salvin, Proc. Zool. Soc. London, October 

 1869, p. 417. (Tucurrique, upper Rio Reventazon Valley, Caribbean slope, 

 Costa Rica.) 



Characters. — Slightly larger ; male with the white tips on the wing 

 coverts broader ; female olive-brown on back, wings and tail, with the 

 crown darker ; concealed white on back reduced in extent or absent. 



Measurements. — Males (6 from Bocas del Toro, Guatemala, 

 Nicaragua, and Costa Rica), wing 77.0-80.5 (79.4), tail 58.0-60.2 

 (58.6, average of 5 ) , culmen from base 21.6-23.7 (22.6 ) , tarsus 30.7- 

 32.2 (31.5) mm. 



Females (5 from Bocas del Toro, Nicaragua, and Costa Rica), 

 wing 76.8-77.4 (77.0), tail 59.8-63.0 (61.2), culmen from base 

 21.3-23.1 (22.1), tarsus 30.5-32.4 (31.6) mm. 



Resident. Uncommon in western Bocas del Toro, where recorded 

 in the region around Almirante. 



On February 5, 1958, I collected an adult male in heavy under- 

 growth on the Rio Occidente. Others were taken in mist nets near 

 Almirante by assistants of Dr. Pedro Galindo, two by R. Hinds, a 

 female December 16, 1960, and a male February 8, 1961, and a 

 female, by A. Quifiones, October 26, 1962. 



GYMNOCICHLA NUDICEPS NUDICEPS (Cassin) 



Myiothera nudiceps Cassin, Proc. Acad. Nat. Sci. Philadelphia, vol. 5, 1850, p. 



106, pi. 6. (Near Panama City, Province of Panama.) 

 Myrmeciza ferruginca Lawrence, Ann. Lye. Nat. Hist. New York, vol. 7, 1862, 



p. 470. (Lion Hill, Canal Zone, Panama.) 

 Myrmelastes corvinus Lawrence, Ibis, vol. 5, no. 2, April 1863, p. 182. 



("Panama" = Lion Hill, Panama Railway.) 

 Myrmelastes lazvrencii Salvin and Godman, Biol Centr.-Amer., Aves, vol. 2, 



