1912.] NATURAL SCIENCES OF PHILADELPHIA. 349 
which live under the bark of rotting trees, are probably never en- 
countered by wild catbirds, but all offered the captive birds were 
eaten. Among the forms accepted and rejected, the nauseous 
metallic-green ground-beetle (Chlenius) and the honey-bee (Apis 
mellifera) are eaten by wild catbirds, and both strawberries and 
cherries are favorite foods, as cultivators to their sorrow well know. 
A wasp was rejected by the captive birds, but many wasps have been 
found in stomachs of wild catbirds. The soldier-beetle (Chauliogna- 
thus pennsylvanicus), both disregarded and accepted in the experi- 
ment, is eaten under natural conditions. 
Summary: Dumetella carolinensis.— 
| 
Accepted. Rejected. | Disregarded. 
~~ 5 
Spe- | Speci-} Spe- | Speci-| Spe- | Speci- 
cies. | mens., cies. | mens.| cies. ; mens. 
‘‘Warningly colored” species.............. | 9 16 0 0 0 | 0 
Others “‘specially defended”... : 10 62 1 1 1 1 
“Non-protected”’ species... | 11 80 1 3 Bit Vt 
| 
| Accepted and | Accepted and 
rejected. disregarded. 
: a ‘ 
| Sa Specimens. | eg Specimens. 
“Warningly colored”’ species...... weal Pod A383 | R5 | Vt Aa! I 
Others ‘“‘specially defended’ | 1 5 2 +O 0 0 
““Non-protected” species..... i 3 5 4. 0 0 0 
Brown THRASHER (Tozxostoma rufum) %— 
Accepted: 
COLEOPTERA. 
CaRABIDA. 
Harpalus caliginosus (black). 
LAMPYRID&. 
Chauliognathus pennsylvanicus (yellow and black). 
CHRYSOMELID. 
Leptinotarsa decemlineata (yellow and black), twice swal- 
lowed and thrown up, then swallowed again and re- 
tained. 
Diabrotica 12-punctata (yellow and black). 
td 
% An account of these experiments, with some additional remarks about the 
bird’s preferences for certain human foods and wild berries, is in Yearbook U.S. 
Dept. Agr., 1895 (1896), p. 414. 
