76 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
the ground. Later, on November 12, on the Hacienda Santa Maria 
I found them common in the woodlands and thickets scattered 
through the pastures below the house. Their chipping calls brought 
them to attention in the fairly dense growths near the ground that 
were their haunt. 
While the race mesochrysus is recorded from southwestern Costa 
Rica the series represents the typical race. 
Family ICTERIDAE 
ICTERUS GALBULA (Linnaeus): Baltimore Oriole 
Coracias Galbula LinnazEus, Systema naturae, ed. 10, vol. 1, 1758, p. 108 (Virginia). 
The four specimens taken include two males and two females from 
Liberia, October 26, and from Hacienda Santa Maria, November 10 
and 14. The birds were common from the day of my arrival, and at 
Liberia they were seen frequently in the town. Numbers came at 
sunset from the adjacent country to roost in the village trees where 
they mingled with Jcterus sclateri sclateri. October 29 I observed at 
least 50 of the two species flying singly or in groups past the hotel. 
On the mountain I found them in orange trees near the Hacienda 
house where they were eating the fruit opened by woodpeckers. At 
Liberia they were present on November 18 on my last day afield. 
ICTERUS BULLOCKII (Swainson): Bullock’s Oriole 
Xanthornus Bullockit Swainson, Phil. Mag., new ser., vol. 1, June 1827, p. 486 
(Real del Monte, Hidalgo, Mexico). 
A female taken at Liberia on November 1, 1940, has the abdomen 
more yellowish than the average of bullockit but otherwise exhibits the 
coloration of that bird, except that two scapular feathers on the left 
side have the outer webs dark at the centers as is regularly the case in 
Icterus galbula. The specimen measures as follows: Wing 87.3, tail 
66.3, culmen from base 19.7, tarsus 13.3 mm. It is the farthest south 
at which this bird has been recorded as far as I am aware. 
The shghtly abnormal markings described are of interest in connec- 
tion with the account by Sutton” of orioles from western Oklahoma 
that display markings variously intermediate between the Baltimore 
and Bullock’s oriole. 
ICTERUS SCLATERI SCLATERI Cassin 
Icterus Sclateri Cassin, Proce. Acad. Nat. Sci. Philadelphia, Apr. 1867, p. 49 
(Nicaragua). 
These beautiful orioles were found in the wooded areas along the 
Rio Liberia, where I shot males on October 26, 28, and 29. The 
Baltimore oriole ranges with them at this season, the two having 
similar habits. 
26 Auk, 1938, pp. 1-6, pl. 1. 
