i 4 INSECTS. 



Order HYMENOPTERA. 



Suborder SESSILIVENTRES. 



1. Family TENTHREDINID^E Saw-Flies. 



2. SIRICID.E Wood-Borers. 

 Suborder PETIOLATA. 



Section PARASITICA. 



1. Family CYNIPIM: Gall- Wasps. 



2. PROCTOTRYPID^E Egg- Wasps. 



3. CHALCIDID^E Parasitic Gall- Wasps. 



4. ICHNEUMONID^E Large Larvae-Wasps. 



5. BRACONID.E Small Larvae- Wasps. 



6. EVANIIDJE Hymenoptera Parasites. 



7. CHRYSIDID.E Burnished Wasps. 

 Section ACULEATA. 



1. Family FORMICIDJE Social Ants. 



2. MUTILLIM: Parasitic Ants. 



3. THYNNID.E 



4. SCOLIID.E 



5. SAPYGID.E 



6. BEMBICID^E 



7. POMPILIM: Spider- Wasps. 



8. SPHEGID^E Locust- Wasps. 



9. LARRID.E. 



10. NYSSONID^E. 



11. CRABRONIM: Fly and Aphid- Wasps. 



12. PHILANTHIM: Andrena Parasites. 



13. MASARID.E Solitary Wasps. 



14. EUMENID.E Mud- Wasps. 



15. VESPIM; Paper- Wasps. 



16. ANDRENID^E Solitary Bees. 



17. APID^E Honey and Humble-Bees. 



THE SAW-FLY GROUP, Suborder Sessiliventres. 



This group contains the various species of saw-flies, and may be subdivided 

 into the saw-flies proper (Tenthredinidce) and the wood-borers, or tailed-wasps 

 (Siricidce), although it also comprises the little pith-boring Cephidce and the rare 

 and little known species of Oryssidce. The food of the larvae of these insects 

 consists entirely of vegetable matter. In the case of the first-named family, the 

 leaves of trees and shrubs ; in that of the second, the solid wood of various trees ; 

 and in the case of the third, the tender pith of the stalks of rye and also the 

 shoots of pear and other trees. Such grubs as are internal feeders are either 

 limbless, or have at most six more or less rudimental thoracic legs. Those, on the 

 other hand, which live a free life and feed on foliage, are very similar in general 

 appearance to lepidopterous larvae, from which they may be distinguished by the 



