Plate XXXIV. 
1. Rostrum of male of II. africana. 
(<f) Dorsal- surface. 
(If) Ventral surface. 
2. Rostrum of female of II. africana. 
(a) Dorsal surface. 
( b ) Ventral surface. 
( c ) Pinnate, spine enlarged. 
3. Rostrum of nymph of II. africana. 
(a) Dorsal surface. 
if) Ventral surface, 
4-. Rostrum of larva of II. africana. 
(a) Dorsal surface. 
( 1 ) ) Ventral surface. 
5. Dorsal shield of male of II. africana. 
6. Dorsal shield of female of II. africana. 
7. One-half of ventral surface of male 
of II. af ricana. 
8. Mandible of female of II. africana. 
9. Mandible of nymph of II. africana. 
j 10. Mandible of male of H. africana. 
