NATURAL ENEMIES: REPTILES AND BATRACHIANS. 31 
Birds that have been found by stomach examination to have fed on leafhoppers; the latter 
grouped by families—Continued. 
JASSID Z—Continued. 
poe 
of stom- 
afotal, | sons or 
Name of bird. Name of insect. of stom- | tatning Percentages. 
achs ex- | insects 
amined. of the 
family 
named. 
\NGIRG rere opr ee JASSIOD 2S Secee dees seca sass 67 11 | 67, 10, 50, 25, 33, 75, 
15, 7, 60, 20, 15. 
Xanthocephalus xanthocephalus.|...-- GOSS soe ceaccneneeeccme 148 4 | 1,1,1, trace. 
Zamelodia melanocephala........|.---- Goss eek 2 PRs 230 5 | 1,4,7, trace, 5. 
Zonotrichia leucophrys...........|----- C0bee neta teaeroeeeeees 626 3 | 20,15,3. 
Chordeiles virginianus............| Acinoptera acuminata...-.... ) i) P45 
Chordeiles virginianus...........- Athysanus exitiosus.......-. 1 1} 2. 
Cheetira pelacics:... 2 ..tes.J.|se~ GOD eck ootecceweer eee 1) 1 | 30 (12 spm.). 
Chordeiles virginianus..........-. AUN Y SANUS SDae cs faeces eee () 1 | Trace. 
Chordeiles virginianus............ Cicadula 6-notata............ (1) 1 | Trace. 
Agelaius phoeniceus.............- Cicadulaisp sts 4 22223: 26 (4) 1 | 5. 
Chordeiles virginianus............]..--- (cle Seats SE RR eee Se (1) 3 | Trace, trace, trace. 
Molonimestatersese ts ova. ee cle ceee don Shia Bie ee (‘) 11 | 4,3, 10, 2,1, 1, 10; 1, 
8, trace, 5. 
Psaltriparus minimus............|.--.- OSA ko reseed Rae LEE (1) 2 | 20,1. 
Cheetura pelagica................- Deltocephalus flavicosta....- (1) Liy2 
Cheetura pelagica................- Deltocephalus sp............ () be jae 
Chordeiles virginianus............|----. GOs. Sar ei erie SNS he (4) 9 || 1, 12, 20; 55+3;.8;2; 
trace, trace. 
Colinus'virginianus:...5--2..--..2|-..-. (6 (OS SC ORCA Rs < ae ee cee () 1 | Not given. 
Archilochus colubris... ........-- TIT POASeH SPecee seen _ -eek. (1) 1'} 55. 
Chordeiles virginianus..........-. Butettix sp: esos ons) eae (1) 3 | Trace in all. 
Cyrtonyx montezum mearnsi...| Phlepsius areolatus....._-.-- 24 IPR 1 
Chordeiles virginianus............ Phiepsius cumulatus........ (1) Teles 
Chordeiles virginianus............] Phlepsius excultus........-. (1) 1g ae 
Cheetura pelagica................. Phlepsius irroratus.......... (1) 4] 1,1,1,8. 
Chordeiles virginianus............]..... CON Maes sea (1) 8} 10, 12, 2, 3, trace, 
trace, 1, trace. 
Oxyechusvociferus:. 1... 2...-. 144. dosseste 254s Saas A (1) 1/3. 
Chordeiles virginianus..........-- Bhlepsigs sp esses: ee es (‘) | ah 
Chordeiles virginianus............| Thamnotettix lusoria....... (1) 2 | Trace in both. 
Chordeiles virginianus............| Thammotettix sp........... (1) 2 Trace, 1. 
Dendroica tigrina..-/........---. ‘Typhiocyba'sp'22_.-22 322. 2 (4) sae 
Vermivora peregrina.............|.---- Gorse: eee as eke! 1 1] 8. 
Passer domesticus.......0.2..5..:/2.... 0 Cot ee See ae 421 2 | 100 per cent stom- 
ach nearlyempty, 
33. 
Chordeiles virginianus............ Xestocephala sp.......-....- (4) 1 | . Trace. 
TETTIGONID®. ” 
Depa apephals mollipes Bae lacsoceorne 
Par reculacephala mollipes 83 . 
Barus frankliniie os, ou os oS scce soe vie nce 8 | Trace in all. 
PettigoniaSDisssns-eeace ers sacseescec 
27,805 | 770 
1 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 
