PLATE LXXIX. 



Chaitophorus aceris. (Page 128.) 



Fig. 6. — Abnormal form much enlarged {Ghely- 

 morpha testudo), showing the peripheral flabellas, and 

 the dorsal plating. This form undergoes no further 

 metamorphosis. 



Fig. 7. — Cast or moulted skin from a similar insect. 

 These exuviae are complete even to the tips of the 

 claws. 



Fig. 8. — Underside of the normal young of Chaito- 

 ])liorus aceris, which goes through the usual metamor- 

 phoses. 



Fig. 9. — Head and adjacent parts of the winged 

 female. a. Terminal joints of the rostrum. h. 

 Labrum. c. Salivary glands. d. Qj]sophagus and 

 stomach. The latter appears to be constricted and 

 again expanded before entering the gut. 



Fig. 10. — Eye of winged female. e. Lenses of 

 cornea. /. Retina and pigmental mass, ending in the 

 fibres of the optic nerve. 



Fig. 11. — Caudal flabellfe of dimorph (fig. 6). 



Fig. 12. — Nectary and tube of fig. 8. 



Fig. 13. — Rostrum of dimorph, showing the ducts 

 which ramify into the head. 



Fig. 14. — Genito-anal region of the winged male. 

 ]). Penis, recurved at its termination, g. Claspers at 

 the base of the same. li. Horny ring, " Armature 

 copiUatrice " of Balbiani, encircling the penis. 



Fig. 15. — Part of the foot of the dimorphous form 

 above described, i. Claws at the ends of tarsus. Jc. 

 Pulvilli or discoidal hairs, used for prehension. 



