24 
BULLETIN 619, U. S. DEPARTMENT OP AGRICULTURE. 
manufactured. The number in each stomach ranged from 1 to 4 or 
5. For what purpose these stones were given to the nestling birds 
and why angular fragments were selected can only be conjectured. 
The food contained in the same stomachs was entirely of insects of a 
soft nature and did not appear to require the aid of gravel for tritu- 
ration. Moreover, the parent birds, whose food was certainly as 
hard as that of the nestlings, did not take anything of the kind into 
their stomachs. 
Following is a list of insects identified in stomachs of bank swal- 
Ioays and the number of stomachs in which found : 
ISOPTERA. 
Termes 
HEMIPTERA. 
Entylia concisa 
Micrutalis calva 
Micrutalis parva 
Agallia sp 
Tetigonia hieroglyphica. 
Cicadula 6-punctata 
Tylopelta brevis 
Lygus sp 
COLEOPTERA. 
Bembidium versicolor. 
Bembidium sp 
Clivina impressifrons. 
Tachys tripunctata 
Amara sp 17 
Agonoderus pallipes 
Agonoderus sp 
Haliplus sp 
Bidessus afflnis 
Helophorus inquinatus 
Eydrochus subcupreus 
Cercyon fulvipennis 
Cercyon melanocephalum 
Cercyon sp 
Cryptopleurum minutum 
Colon pusillum 
Atheta sp 
Cyrtusa blandissima 
Homalota sp 
Aleochara sp 
Heterothops fasculus 
Philonthus sp 
Xantholinus obsidianus 
Cilea silphoides 
Eustilbus apicalis 
Phalacrus politus 
Scymnus loewii 
Atomaria ephippiata 
Typhowa fumata 
Thaumatoglossa americana 
Ilister americanus 
Hister subrotundus 
Hister sp 
Saprinus scissus 
Saprinus lubricus 
Saprinus splxxroides 
Saprinus sp 
coleoptera — continued. 
Carpophilus dimidiatus 
Conotelus stenoides 
Epv.rwa helvola 
Cryp tar ch a strigata 
Cryptarcha sp 
G 'lis chroch Hits fasciatus 
Melanophthalma sp 
Drasterius dorsalis 
Hyperoides cJwris 
Drapetes geminatus 
Throscus sericeus 
Cis fuscipes 
Atamius cognatus 
Atcenius sp 
Onthophagus hecate 
Onthophagus pennsylvanicus 
Onthophagus sp 
Oxyomus poreatus 
Aphodius fimetarius 
Aphodius ruricola 
Aphodius granarius 
Aphodius vittatus 
Aphodius punctatus 
2 
1 
1 
2 
____ 2 
• 3 
1 
1 
1 
2 
1 
1 
1 
1 
1 
2 
13 
1 
6 
1 
1 
1 
1 
Aphodius inquinatus 24 
Aphodius stercorosus 1 
Aphodius sp 12 
4 
30 
1 
1 
1 
2 
Strigoderma pygmcea _ 
Hwmonia mgricornis 
Diaehus auratus 
Oraphops pubescens 
Metachroma wneicolle 
Cerotoma trifurcata 
Epitrix cucumeris 10 
Crepidoclera helxines 
Glyptina atriventris 
Ghwtocnema pulicaria 
Chwtocnema sp 
Mylabris prosopis (Bruchus) . 
Notoxus sp 
Anthicus punctiilatus 
Anthicus floralis 
Anthicus nitidulus 
Anthicus sp 
Thecestemus humeralis 
Sitona hispidula 
Sitona flacescens 
Sitona sp 
Apion metallicum 
Apion sp 
Phytonomus posticus 
1 
2 
3 
1 
o 
5 
1 
1 
2 
10 
1 
27 
3 
18 
2 
1 
1 
