eggs of Hemiptera. 199 



youuf^ Lugs ; b, the capsules intact (the interior of the egg having 

 been eaten by Hyraenopteia). 



Fig. 4, Plate IX. — Outline of one egg, seen in partial section 

 (the capsule, c, being divided, and a portion of the lattice-work 

 broken away) ; a, the cone surmounted by its spine projecting into 

 the entrance-tube, o, of the capsule ; b, lace or lattice-work (par- 

 tially broken away), connecting the cone with the wall of the cap- 

 sule ; d, portion of the egg in which the embryo is developed. 



Fig. 5, Plate IX. — Longitudinal section of a cone, showing its 

 tubular structure and the small transverse space below it, with 

 which all the tubes communicate ; a, body of the cone ; b, lattice- 

 work that connected it with capsule ; c, transverse inferior space or 

 chamber ; d, circumferential wall of this chamber. 



Fig. 6, Plate IX. — Eggs, showing the mode of emergence ; a, 

 egg intact, with cone in the capsule above the embryo-chamber 

 undisturbed ; b, the young insect commencing to emerge, and 

 rupturing the capsule by elevation of the cone ; c, the young 

 insect just emerging, with cone falling away ; d, empty egg-shell. 



Fig. 7, Plate IX.— The cone and its lattice-work removed from 

 the capsule. 



Fig. 8, Plate IX. — Portion of egg at the point of contact of the 

 various parts ; a, wall of the embryo chamber ; b, wall of capsule ; 

 c, cone in the interior of capsule. 



Fig. 9, Plate VIII. — Egg of Piezosternum subulatum (taken 

 fi'om interior of body), referred to in Proc. Ent. Soc, 1889, p. 1; 

 rt, nail-like objects, probably micropyles ; 6, vase-like structm"e of 

 unknown function. 



