FOOD HABITS OF THE SWALLOWS. 
25 
coleoptera — continued. 
Macrops sp ' 1 
Balaninus sp 1 
Anthonomus grandis 12 
Conotrachelus nenuphar 1 
Cryptorliynchus bisignatus 2 
Hypocoeliodes wickhami 1 
Cceliodes acephalus 3 
Perigaster cretura 1 
Limnobaris blandita 1 
Baris confinis 1 
Baris wrea 2 
Rhinoncus pyrrhopus 1 
Rhinoncus longulus 1 
Centrinus picumnus 2 
Calandra oryza 9 
Pityophthorus minutissimus 1 
Tomicus calligraphicus 1 
Tomicus sp 1 
coleoptera — continued. 
Hylastes tenuis 1 
Hylastes sp 2 
Hylesinus sp 1 
Brachytarsus plumbeus 1 
DIPTERA. 
Culex sp l 
Calliphora sp 2 
Luoilia sp 4 
HYMENOPTERA. 
Chrysis sp 1 
Myrmica scabrinodis 4 
Pimpla sp l 
Opinion sp l 
Bassus sp l 
Rhodites sp 1 
ROUGH-WINGED SWALLOW. 
Stelgidopteryx serripennis. 
The rough- winged swallow (PI. II, middle figure) occupies the 
United States from ocean to ocean and from the Gulf of Mexico to 
the latitude of southern New England in the East and of southern 
Canada in the West. It is not abundant except locally and is found 
much more frequently in the more southern parts of the country. 
Its nesting sites are very often like those of the bank swallow; in 
fact, they may be the old abandoned burrows of that species ; but in 
general they are holes in cliffs, ledges, banks, of earth, or crannies 
in bridges, and other structures of man. As a rule, rough-winged 
swallows do not dig holes for themselves. They do not live so much 
in large colonies as do the other species of swallows, and a pair may 
frequently be found breeding by themselves, though a colony of five 
or six pairs is more common. In migration, however, they collect in 
large flocks. 
The following study of the food of the rough-winged swallow is 
based upon examination of the contents of 136 stomachs, collected in 
15 States, the District of Columbia, and Canada, and in the months 
from April to September. The food was practically all animal 
matter, except that in one stomach were a lot of woody granules of 
uncertain origin, in another a piece of root, and in a third two 
seeds of currant (Rites). In the final analysis these amount to 0.21 
per cent and so may be dismissed without further comment. The 
real food is made up of insects, a few spiders, and a snail. Of the 
insects, 14.83 per cent are beetles, only 0.5 per cent of which are of 
useful species. The May -beetle family (Scarabseidse) (2.69 per cent) 
were mostly the small dung beetles (Aphodius) , with a few larger 
forms. Weevils or snout beetles (4.93 per cent) embrace a few inter- 
esting species, as the alfalfa weevil, found in 11 stomachs ; the cotton 
