bakeri, 378 
dodgei, 378 
gallicaulis, 378, 379 
minor, 378 
obscura, 378 
styrax, 378 
Xyelidae, 377 
xyelids, 377 
Xvlastodoris luteolus, 68 
Xyleborinus saxeseni, 368, 374 
X vleborus—372, 374 
affinis, 374 
celsus, 373 
devexulus, 374 
dispar, 373, 375 
ferrugineus, 373, 374 
intrusus, 374 
lecontei, 374 
obesus, 374 
obliquus, 374 
opimus, 374 
planicollis, 374 
pubescens, 374 
rubricollis, 374 
sayl, 374 
tachygraphus, 374 
validus, 374 
viduus, 374 
volvulus, 374 
xylographus, 374 
X vletinus— 
harrisii, 254 
peltatus, 252 
Xvlobiops basilaris, 23, 257, 258 
Xvlococculus betulae, 90 
X vlocopa— 
micans, 440 
virginica, 439 
Xylocopinae, 439 
Xylophagidae, 445 
X vlophagus— 
abdominalis, 445 
lugens, 445 
Xyloryctes jamaicensis, 273 
X ylosandrus— 
compactus, 375 
crassiusculus, 375 
germanus, 374 
morigerus, 375 
zimmermanni, 374 
Xyloterinus politus, 368, 371 
X ylotrechus— 
aceris, 310 
annosus annosus, 312 
colonus, 312 
obliteratus, 311 
quadrimaculatus, 310 
Sagittatus sagittatus, 311 
undulatus, 312 
yellowjackets—436, 437, 438 
eastern, 437 
Yponomeutidae, 138, 140 
Z 
Zabrachia polita, 445 
Zeiraphera— 
canadensis, 157 
608 
improbana, 157 
unfortunana, 157 
Zelleria haimbachi, 140 
Zelus exsanguis, 66 
Zengophora scutellaris, 12, 265 
Zenodochium coccivorella, 133 
Zeuzera pyrina, 12, 145, 146 
