NATUEAL ENEMIES: EEPTILES AND BATEACHIANS. 
31 
Birds that have been found by stomach examination to have fed on leaf hoppers; the latter 
grouped by families — Continued. 
JASSID^E— Continued . 
Name of bird. 
Name of insect. 
Total 
number 
of stom- 
achs ex- 
amined. 
Number 
of stom- 
achs con- 
taining 
insects 
of the 
family 
named. 
Wilsonia pusilla 
Xanthocephalus xanthocephalus 
Zamelodia melanocephala 
Zonotrichia leucophrys 
Chordeiles virginianus 
Chordeiles virginianus 
Chaetura pelagica 
Chordeiles virginianus 
Chordeiles virginianus , 
Agelaius phoeniceus 
Chordeiles virginianus 
Molothrus ater 
Jassidae . 
....do... 
148 
230 
626 
Acinoptera acuminata. 
Athysanus exitiosus. . . 
do 
Athysanus sp 
Cicadula 6-notata 
Cicadula sp 
do 
....do 
Psaltriparus m inim us. 
Chaetura pelagica 
Chaetura pelagica 
Chordeiles virginianus. 
.do. 
Deltoeephalus flavicosta. 
Deltocephalus sp 
do 
Colinus virginianus 
Arehilochus colubris . . 
Chordeiles virginianus 
Cyrtonjrx montezumae mearnsi. 
Chordeiles virginianus 
Chordeiles virginianus 
Chaetura pelagica 
Chordeiles virginianus 
Oxyechuc vociferus. . . 
Chordeiles virginianus. 
Chordeiles virginianus. 
Chordeiles virginianus. 
Dendroica tigrina 
Vermivora peregrina. . 
Passer domesticus 
....do 
Empoascasp 
Eutettixsp 
Phlepsius areolatus... 
Phlepsius cumulatus. 
Phlepsius excultus. . . 
Phlepsius irroratus. . . 
....do 
.do. 
Phlepsius sp 
Thamnotettix lusoria. 
Thamnotettix sp 
Typhlocyba sp 
do 
....do 
1 
4-21 
Chordeiles virginianus. 
Xestocephala sp. 
(0 
67, 10, 50, 25, 33, 75, 
15, 7, 60, 20, 15. 
1,1,1, trace. 
1,4,7, trace, 5. 
20,15,3. 
2. 
2. 
30 (12 spm.). 
Trace. 
Trace. 
5. 
Trace, trace, trace. 
4,3,10,2,1,1,10,1, 
8, trace, 5. 
20,1. 
2. 
1. 
1, 12, 20, 5, 3, 8, 2, 
trace, trace. 
Not given. 
55. 
Trace in all. 
1. 
1. 
1. 
1,1,1,8. 
10, 12, 
3, trace, 
trace, 1, trace. 
3. 
1. 
Trace in both. 
Trace, 1. 
100 per cent stom- 
ach nearl v empty, 
33. 
Trace. 
TETTIGONID^. 
Larus franklini. 
Draeculacephala mollipes 
Draeculacephala mollipes 
var. minor. 
Tettigonia sp 
S3 
27,805 
770 
Trace in all. 
i Number of stomachs recorded elsewhere in this list. 
Reptiles and Batrachians. 
The reptiles and batrachians are to be considered as a factor in 
the control of these insects, but there is little evidence of their being 
of much service, and except possibly for the frogs and toads, which 
are general insect feeders, there would seem to be little possibility 
of assistance from this group. Direct observations do not seem to 
show any evidence of the capture of leafhoppers by these animals, 
and in an elaborate record of the insects eaten by the common toad 
29460°— Bull. 108—12- 3 
