FAMILY FRINGILLIDAE 



551 



eggs each measured 25x19 mm. They were white, sprinkled rather 

 sparsely with round dots about 1 mm. in diameter; the dots were of two 

 colors, russet and light tan, the russet ones being by far the more nu- 

 merous. On July 2, the eggs were newly hatched. The young had a 

 sparse covering of down, dirty gray-brown in color." 



Skutch (Pac. Coast Avif. no. 31, 1954, pp. 55-61) has found this 

 species nesting in Costa Rica from March to August. All but one of 

 the twelve nests he found contained two eggs; the exception had only 

 one egg. Both sexes build the nest, but incubation is performed only 

 by the female and requires 13 or 14 days. The young are fed ground- 

 up seeds and a few insects by both parents; at 10 days they are well 

 feathered. Skutch observed one pair that raised at least 2 broods in 

 one season. 



PASSERINA CYANOIDES CYANOIDES (Lafresnaye) 



Coccoborus cyanoides Lafresnaye, 1847, Rev. Zool. [Paris], 10, p. 74. (Panama.) 



Characters. — Male, lighter all over; female less russet on under- 

 surface. 



A male collected at Canita, Panama, on February 7, 1962, had the 

 iris mouse brown; lower sides of mandible at base neutral gray; maxil- 

 la, upper half of sides of mandible, tip, and broad gonys black; tarsus, 

 toes, and claws fuscous-black. A female taken there the next day had 

 the iris mouse brown; maxilla, extreme tip and angle of mandible 

 fuscous-black; rest of mandible light fuscous; tarsus, toes, and claws 

 fuscous. An immature male taken February 24, 1961, at the Peluca 

 Hydrographic Station, Panama, had the entire mandible dark neutral 

 gray. 



Measurements.— Males (10 from Panama), wing 78.8-81.0 (80.1), 

 tail 63.6-70.9 (68.1), oilmen from base 19.4-21.8 (20.5), tarsus 19.0- 

 21.0 (19.8, average of 9) mm. 



Females (10 from Panama), wing 73.0-80.0 (77.2), tail 59.6-71.6 

 (64.1), culmen from base 19.0-21.0 (20.3), tarsus 18.7-20.3 (19.5) 

 mm. 



Resident. Common in the lowlands of both slopes from at least El 

 Uracillo, in eastern Code, eastward through northern Colombia to 

 northwestern Venezuela and to central western Ecuador. In the Canal 

 Zone, it has been found breeding in July (Eisenmann, Smiths. Misc. 

 Coll., vol. 117, no. 5, 1952, p. 57) and August (Arbib and Loetscher, 

 Auk, 1935, p. 327) . Eggs from the Canal Zone agree with those of the 

 other Panama races (Stone, Proc. Acad. Nat. Sci. Philadelphia, vol. 

 70, 1918, p. 275). 



