PLATE XXII. 
SiPHONOPHOBA AVELLANi^l. (Page 149.) 
Pig. 1. — Apterous viviparous female. 
Pig. 2, — Winged viviparous female. 
Pig. 3, — Upper and lower wings of tlie same. 
Pig. 4. — Head and basal antennal joints of the imago. 
The nervous filaments supplied to the antennae are 
shown. 
Pig. 5. — Eye, greatly magnified, showingjC, the cornea, 
with its hemispherical lenses ; o, the ocellus, with its 
special lens ; the chorion, with its pigmental mass ; 
r, the bundle of filaments, forming the optic nerve. 
Pig. 6. — The imbricated papilla fixed on the costal 
margin of the hind wing. It is furnished with three 
bent hooks, which engage themselves in the fold of the 
upper wing during flight. 
