Introduction to A nimal ^Morphology. 42 1 



domen petiolate. The females lay their eggs with an ovipo- 



sitor or terebra, covered by two valves, in 



the bodies of the larvae of other insects, 



in whose cavities the footless larvae, when 



hatched, are endoparasitic. 8. Chal- 



cididae antennas bent, 4~6-jointed ; 



terebra ventral ; prothorax not elon- 



gated to the wing-root. Blastophaga 



is an agent in fertilizing figs. 9. Cy- 



nipidae, Gall-flies antennae thread- 



like, i3-i6-jointed ; abdomen com- 



pressed. Cynips lays eggs in oak 



leaves and branches, forming nut-galls. 



Rhodites forms the " Bedeguar" on 



roses. Synergos (a cuckoo form) lays Apocrypta paradoxa. A fi& 



eggs on the galls of Cynips. 10. Proc- P arasite - 



totrypidae antennae straight or elbowed, io-i5~jointed, 



rarely 8 ; minute black parasites, n. Ichneumonidae thin, 



long, antennae many-jointed, thread-like; terebra terminal, 



straight ; abdomen attached to the upper side or to the end 



(Ichneumon) of the metathorax. 



Sub-order 3. Phytophaga abdomen sessile ; ovipositor 

 saw-like ; larvae with more than six feet, and proctuchous. 

 12. Tenthredinidae, Saw-flies antennas thick at end ; 3-30- 

 jointed ; metathorax with a deep notch above ; eggs laid 

 under the epidermis of leaves. Nematus lives in willow 

 leaves. Tenthredo, the saw-fly, is common on roses, and the 

 larva of one form, Athalia centifolia, is often destructive to 

 turnips (Nigger caterpillars). 13. Urocerid;u, tailed or wood 

 wasps antennae straight, thread-like, n, 24-jointed ; abdo- 

 men cylindrical, nine-ringed, with prominent terebra. 



