PLATE IX.— THE PHLOEOTRIBUS OLEAE. 



Eig. 1. Portion of dry branch of olive A, B. r/, excrescences 

 formed by excrement and borino'sfrom wood of the vear hanoino; from 

 tlie o])enings of the galleries wliich the Phloeotribns dig ont, at />, hh 

 lioles made going in. B to V bark stripped off, c, d, e^ show galleries 

 made by the Phloeotribns; r, gallery commenced showing niche 

 enclosing eggs; d, two galleries dng by two females going in at same 

 entrance flanked by laterals dug out by the larvie; c, two similar 

 galleries of Avhich some complete laterals show the chrysalides. 

 because formed by the larva^ which were the first to open it. 



Fig. 2. The galleries c, of previous figure enlarged; a, ingress: 

 r, gallery in wliich female stays while excavating and dei)Ositing 

 eggs; d, d, d, niches with larvavenclosed who have commenced to dig 

 out the lateral galleries; c, e, Avhicli contain the eggs; b, remains 

 short and without laterals because duo* out bv a male. 



Fig. 8. Branch of olive in crotch of which is seen a Phloeotri- 

 bns at work digging a, tunnel; on pulling him out, the hole is seen 

 filled with borings and excrement. 



Fig. 4. Branch similar to ])receeding showing Phloeotril)ns 

 (enlarged,) in a nest cindered with borings and excrement. 



Fig. 5. The egg. (enlarged.) 



Fig. 6. The larva side view (enlarged.) 



Fig. 7. Head of larva, seen from above, (nuich enlarged) 



Fig, 8. Same head, side view. 



Fig. 9. Chrysalis with strip of wood from tree a, adhering. 



Fig. 10. Insect (enlarged.) 



Fig. 11. Antenna, (very nuich enlarged.) 



Fig. 12. Tibia and tarsi of hind feet, (enlarged.) 



