1918.] NATURAL SCIENCES OF PHILADELPHIA. 267 



275. MyioDius barbatus atricaudus (Lawrence). Black-tailed Myiobius. 



Male and female, Gatun, June 25 and August 13, 1911. Iris 

 black, bill black above, mandible grayish-blue with black tip, feet 

 dark gray. 



In thickets on the forest edge. Nest a pendant bell-shaped struc- 

 ture with entrance beneath the passage going up and over into the 

 nest cavitj^; made of dead leaves and fine vegetable fiber, lined with 

 vegetable silk and fine fibers. Situated on a branch overhanging a 

 stream in the forest. Eggs two, rich deep rufous, wreathed about the 

 larger end with deeper shade of the same, .65 x .50 in. 



Another pair found building July 30 had finished their nest by Au- 

 gust 6. Eggs two, .64 X .50 and .67 x .50 in. Location and materials 

 exactly as in the former one. 



[276.] Myiobius xanthopygus sulphureipygius (Sclater). Sulphur-rumped Myiobius. 

 *[277.] Empidonax flaviventris (Baird). Yellow-bellied Flycatcher. 

 *[278.] Empidonax virescens (Vieillot). Acadian Flycatcher. 



[279.] Empidonax albigularis Sclater and Salvin. White-throated Flycatcher. 

 *[280.] Empidonax minimus (Baird). Least Flycatcher. 

 *[281.] Empidonax traillii traillii (Audubon). Traill's Flycatcher. 

 *[282.] Empidonax traillii alnorum Brewster. Alder Flycatcher. 

 *[283.] Myiochanes richardsoni richardsoni (Swainson). Western Wood Pewee. 

 *[284.] Myiochanes virens (Linnseus). Wood Pewee. 



Male, Gatun, November 3, 1911. Iris brown, bill black above 

 yellow below, feet black. 



One of several migrants, calling repeatedly. Specimen not in the 

 collection. 



[286.] Myiochanes brachytarsus (Sclater). Short-legged Wood Pewee. 



Two males and two females, Gatun, January 14, 1912, February 

 16, 1913, and April 4, 1911, January 1, 1912. Iris brown, bill black 

 above, mandible rich yellow, feet black. 



Found in trees in low flat jungle. Note very similar to that of the 

 preceding but with weaker accent. 



*[286.] Myiarchus crinitus (Gmelin). Great-crested Flycatcher. 



287. Myiarchus ferox panamensis (Lawrence). Panama Flycatcher. 



Two males. Ft. Lorenzo, June 11, and Toro Point, July 23, 1911. 

 Iris brown, bill and feet black. 



Found in low bushes along the river bank and seashore. 



288. Myiarchus nigriceps Sclater. Black-crested Flycatcher. 



A pair, Gatun, February 4, 1912, and a male, Gatun, November 26 > 

 1911. Iris brown, bill and feet black. 

 19 



