INDEX AND GLOSSARY. 
JO l 
fc. 
Xanthidia nicippe, 386 
Xenos, 590 
Xylocopa virginica, 670 
Xylophagus, 457, 458 
Yeast-cakes, 236 
Yellow-bear, 322 
Yellows, 385 
Yucca, 367 
Yucca-borer, 367 
Zaitha, 132 
Zebra Caterpillar, 305 
Zebra Swallow-tail, 379 
Zercne czesonia, 386 
Zeuzera pyrina, 223 
Zimmermann's Pine-pest, 236 
Zoological classification, 1 
Zoological nomenclature, 5 
Zygaenidse, 326 
Zygasnids, 326 
