76 THE WEST VIRGINIA 
134, PURPLE MARTIN. 
Progne subis (Linn.). 
Summer resident. Common in towns where boxes have 
been put up for them. As the English Sparrows are increas- 
ing, the Martins are fast disappearing. 1 did not observe any 
after September 1. 
135. CLIFF SWALLOW. 
Petrochelidon lunifrons. (Say.). 
Summer resident; common. Found everywhere in bottom 
lands along the streams, where it breeds. I saw large numbers 
of their old nests hanging among the rocky cliffs. Swallows 
are strictly beneficial, destroying large numbers of insects. The 
Cliff Swallow is often called Mud Swallow. 
136. BARN SWALLOW. 
Chelidon erythrogaster (Bodd.). 
Summer resident; abundant in the valleys. 
‘Sie TREE SWALLOW. 
Tachycineta bicolor (Vieill.). 
Summer resident; tolerably common along river bottoms, 
where it breeds in holes in trees. Unlike the other Swallows, 
it Was not observed near the towns. 
138. BANK SWALLOW. 
Cliviecola riparia (Linn.). 
Summer resident; abundant along streams and railroad cuts, 
where it breeds in large numbers, nesting in holes bored into 
the banks. 
139. ROUGH-WINGED SWALLOW. 
Stelgidopteryx serripennis (Aud.). 
Summer resident; common, I found it most plentiful in and 
around Buckhannon and Fairmont, which places seem to be 
well supplied with their favorite nesting resorts, which are stone 
culverts, bridges, and crevices of rocks. 
