FAMILY CAPRIMULGIDAE 203 



specimens. It should be remembered that individuals only recently 

 fully grown, marked by distinct light tips on the wing and tail feathers, 

 usually are more rufescent. 



In addition to the records based on specimens that follow I saw 

 individuals of this species flying on Taboga Island, December 23, 1955, 

 and at Almirante, Bocas del Toro, on several evenings between 

 January 19 and 25, 1958. 



CHORDEILES ACUTIPENNIS TEXENSIS Lawrence 



Chordeiles texensis Lawrence, Ann. Lye. Nat. Hist. New York, vol. 6, December 

 1856, p. 167. (Ringgold Barracks, near Rio Grande City, Texas.) 



Characters. — Size large ; coloration lighter, less deep black, with the 

 pale markings above fewer and paler, being grayish white to pale buff ; 

 white bars in the wings, in both sexes, and in the tail in males broader. 



Measurements. — (From Ridgway, U.S. Nat. Mus. Bull. 50, pt. 6, 

 1914, p. 581), males, wing 173-192 (183.4), tail 104-119 (111.6) mm. 



Females, wing 168.5-180 (175), tail 102-110 (106.1) mm. 



(Bill and tarsal measurements are omitted as they show no signifi- 

 cant differences.) 



Migrant from the north. Locally common, mainly in the lowlands. 



Recorded (by specimens) in Chiriqui (Puerto Armuelles, Alanje, 

 San Felix) ; Los Santos (Pedasi) ; Canal Zone (Juan Mina) ; Panama 

 (La Jagua Hunting Qub) ; and Darien (Cana, Jaque). 



The date of arrival in fall is not certain from available material. It 

 is probable that they come in October, as there is a skin in the U. S. 

 National Museum taken October 29, 1891, at San Jose, Costa Rica. 

 Most of the birds I have seen were collected from December through 

 March, with the last report, a specimen shot April 2, 1949, at Jaque, 

 Darien. This form appears to be common during the season of 

 northern winter. 



In the landward edge of the mangrove swamps below Alanje, Chiri- 

 qui, on the forenoon of March 13, 1960, I found dozens at rest in the 

 trees. The two taken were so fat that they were prepared for skins 

 with difficulty. I assumed that others in the assembly also were north- 

 ern migrants. 



A male, taken March 10, 1912, by E. A. Goldman at 550 meters 

 elevation near Cana, on the slopes of Cerro Pirre, is the only record 

 from a mountain area. 



