21 



of that of the entire egg, is siibcylindrical, being constricted in the 

 middle, ronnded more or less at the lower end, and at the upper 

 abruptly curving inward to meet the neck. The width of the neck 

 on the side (dorsal) opposite the hinge of the cap is about one-sixth 

 of the entire height of the egg, and on the ventral side about one- 

 third as wide as on the dorsal side. On the upper margin of the neck 

 are pure white blunt processes, numbering as a rule 22. The cap is 

 subconical, diameter at base two-thirds of diameter of body of egg, 

 height one-fourth or one-fifth the diameter of base, apex rounded or 

 somewhat flattened. The appearance of the egg is atTected by trans- 

 lucent and opaque areas, which seem to be due to the absence and pres- 

 ence of a coating of wax. The cap is translucent, except for the 



I 



Fig. 7. — Pcntatoma Jigata: a, adult bug; h, egg mass on leaves; c, egg just before emer- 

 gence of nymph ; d, egg at an earlier stage of development ; e, egg from side, showing 

 exit hole at top; f, egg closed, a, 1), enlarged; c-f, greatly enlarged (original). 



edge, and the neck is translucent, except for its upper edge adjoin- 

 ing the cap, the translucent edges of the neck and cap thus combining 

 to make a distinct ring of jDure white. The body of the egg is 

 opaque, except for three or four small translucent areas, usually pres- 

 ent on the side. When the nymph is nearly ready to hatch the trans- 

 lucent areas are quite dark. In some of the empty shells of the same 

 l^atch of eggs the translucent areas remain clear, though not trans- 

 parent, and in some they become yellowish. The entire chorion is 

 closely and finely punctate, the punctures in the translucent parts 

 being smaller than orf the opaque parts. The eggs are deposited 

 in compact batches in the hexagonal system, each egg, except those on 

 the outside, being in contact with six others. 



