PLATE CIV. 



Dryobids Ckoaticus. (Page 74.) 



Fig. 1. — Apterous viviparous female. Attention 

 may be drawn to the long legs and slender antennae. 



Fig. 2. — Winged female with its small wings and 

 disproportionately large body. 



Fig. 3. — Antenna and eye of the same. 



Fig. 4. — Conical nectary rising from a dark areola. 



Fig. 5. — A portion of one of the dark fascia of the 

 wings, much enlarged. Two membranes are seen to 

 overlap each other, but the hexagonal cells do not 

 coincide. The pigment is confined to the peripheries 

 of these cells. 



Fig. 6.* — A portion of the bark of Quercus rohur 

 on which the female of Dryobius rohoris has just 

 laid three rows of eggs. These at first are white, 

 but by exposure to the air they soon become brownish- 

 black and velvet-like. 



* This figure 6 should liave been grouped with the last-described 

 species. 



