_Tribe 2, Entomophaga._--Mostly parasitic on the eggs and larvæ of other insects. Ovipositor used as a borer. _Larvæ_, footless grubs. _Tribe 3, Phytophaga._--Principally vegetable feeders. Ovipositor used as a borer. _Larvæ_ having six or more legs. TABULAR VIEW OF THE PRINCIPAL FAMILIES OF THE HYMENOPTERA. TRIBE I. ACULEATA. _Section 1. Anthophila._ Family 1. Aphidæ or Honey Bees. Family 2. Andrenidæ or Burrowing Bees. _Section 2. Diploptera._ Family 3. Vespidæ or Social Wasps. Family 4. Eumenidæ or Bramble Wasps. Family 5. Masaridæ or Solitary Wasps. _Section 3. Fossores._ Family 6. Philanthidæ or Bee-eating Wasps. Family 7. Crabronidæ or Sand Wasps. Family 8. Nyssonidæ or Fly-eating Wasps. Family 9. Larridæ or Black Wasps. Family 10. Sphegidæ or Grasshopper-eating Wasps. Family 11. Pompilidæ or Burrowing Wasps. Family 12. Bembecidæ or Scented Wasps. Family 13. Sapygidæ or Bees' Nest Wasps. Family 14. Scoliidæ or Beetle-eating Ants. Family 15. Thymidæ or Stout-bodied Ants. Family 16. Mutillidæ or Solitary Ants. _Section 4. Heterogyna._ Family 17. Formicidæ or Social Ants. TRIBE II. ENTOMOPHAGA. Family 18. Cympidæ or Gall Flies. Family 19. Chalcididæ or Little Gall Flies. Family 20. Proctotrypidæ or Bee Parasites. Family 21. Braconidæ or Butterfly Parasites. Family 22. Ichneumonidæ or Ichneumon Flies. Family 23. Evaniidæ or Beetle Parasites. Family 24. Chrysididæ or Golden Wasps. TRIBE III. PHYTOPHAGA. Family 25. Sericidæ or Tailed Wasps. Family 26. Tenthredinidæ or Saw Flies. TRIBE I.--ACULEATA. The _Aculeata_ contains the great majority of the _Hymenoptera_. Their principal characteristic is that the ovipositor of the female in most of the groups is modified into a sting. The _larvæ_ are footless grubs. This tribe is divided into four sections, which are again subdivided into seventeen families, each of which it is our intention to discuss in their proper order. _Section 1.--Anthophila._ _Family 1, Aphidæ._--This family contains the numerous species of honey bees which are familiar to all of us. They are very varied in their structure, colours, and habits. Many species are social, while many others are solitary. The common Hive Bee (_Apis mellifica_) belongs to the former class. There is, perhaps, no insect which has attracted so much notice as this species. Volumes have been written respecting it, and philosophers in all ages of the world's history have spent their whole lifetime in the elucidation of its economy. [Illustration: Fig. 7.--Megischus Annulator.] [Illustration: Fig. 8.--Apis Mellifica (Queen).] [Illustration: Fig. 9.--Apis Mellifica (Drone).]