PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 137 



101. Contopus borealis, (Swains.) 



Not rare during the migrations. — (Dresser, Ibis, 1865, 474.) 



102. Contopus virens, (Linn.) 



Breeds; a few pass the winter.— (Dresser, Ibis, 1865, 474.— Sen- 

 net, B. Rio Grande, 33.) 



103. Contopus richardsoni, (Swains.) 

 August. — (Dresser, Ibis, 1865, 474.) 



104. Empidonax minimus, Baird. 



September. — (Dresser, Ibis, 1865, 474. — Sennett, B. Rio Grande, 33.) 



105. Empidonax acadicus, (Gmel.) 



Two specimens taken in the spring. — (Dresser, Ibis, 1865, 475.) 



106. Empidonax pusillus var. trailli, (Aud.) 



August 7, 1876.— (E. trailli. Dresser, Ibis, 1865, 474.) 



107. Empidonax flaviventris, Baird. 



A single specimen taken. — (Dresser, Ibis, 1865, 475.) 



108. Tyrannus carolinensis, (Gmel.) 



Rather common during the migrations, arriving about the first week 

 in April and September.— (Dresser, Ibis, 1865, 472. — Sennett, B. Rio 

 Grande, 31.) 



109. * Milvulus forficatus, (Gmel.) 



Common summer visitor, arriving about Mar ch 20 and leaving in Sep- 

 tember and October. Several pairs of this exquisite Flycatcher build 

 in the low trees surrounding the parade-ground of the fort. The nests 

 resemble those of the Kingbird, but are smaller, aud, as a rule, are not 

 more than six or seven feet from the ground. The eggs are from three 

 to five in number, and are deposited by the latter part of April. The 

 annual moult takes place in July and August. About the middle of 

 October, 1876, just before sunset, a flock of at least one hundred and 

 fifty of these birds passed over the fort: they were flying leisurely 

 southward, constantly pausing to catch passing insects ; and in the rays 

 of the setting sun their salmon-colored sides seemed bright crimson. — 

 (Dresser, Ibis, 1865, 472.) 



110. Myiarchus crinitus, (Linn.) 



Taken in March and April. I am confident that none of this variety 

 remain to breed. — (Dresser, Ibis, 1865, 473. — Sennett, B. Rio 

 Grande, 32.) 



