viii TABLE OF ILLUSTRATIONS. 
Larve, Nymph, and Cocoon of Red Ant 
Myrmecocystus Mexicanus - - 
Mutilla Europea - - - 
Ammophila sabulosa - - - 
Pelopeus spirifex - - - 
Pelopeus spirifex, Nest detached - 
Cerceris arenaria - - 2 
Lhilanthus apivorus - - > 
Cemonus lugubris - - - 
Odynerus parietum, Metamorphoses 
Adult, Larva, and Pupa of Odynerus 
Lumenes pomiformis - - - 
Chalicodoma muraria - 
Chalicodoma muraria, Nest of — - 
Osmia aurulenta - - - 
Xylocopa violacea 
Psithyrus vestalis - . - - 
Apis mellifica - - - - 
Under surface of Bee - - : 
Hind Legs of Bee - - 
Head of Bee - - - - 
Sting and Venom Glands of Bee - 
Honeycomb - = : : 
COEITAGE Aa RV alate 
Metamorphoses of the Cefonia aurata 
Melolontha fullo - - - - 
Oryctes nasicornis 
Ateuchus sacer - - - - 
Necrophorus vespillo  - 
Silpha quadripunctata 
Staphylinus olens = - - 
Viviparous Staphylinide - - 
Dermestes lardarius and Dermestes vulpinus 
Hydrous piceus - - - - 
LHydrous piceus, Egg Cocoons of 
Carabus auratus - - - > 
Cicindella campestris - c 
Tenebrio molitor - 2 
Meloé cicatricosus and Sitaris humeralis 
Stlaris humeralis - - - 
Lampyris splendidula - - > 
Alaus oculatus  - 
Trichodes alvearius 
Scolytus destructor 
Tomucus typographus and Scolytus destructor 
