101. Contopus borealis, (Swains.)
ISfot 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. — (U. 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 March 20 and leaving in September 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, and, 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.)
