392 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



which compose it had melted and run together. When the 

 eggs are laid, the body of the female shrinks away and is 

 pushed to one side, the space within the waxen case being 

 closely packed with eggs. 



Male. — One specimen, only, of the male (fig. 19) was 

 obtained. It was found within its cocoon (fig. 20) in some 

 material that had been killed with cyanide and was imper- 

 fect. From the cephalic to the caudal extremity, the insect 

 measures about 1.3 mm. The head, thorax and abdomen, 

 though closely connected, are easily distinguished. The 

 head, which appears to be nearly globular in form, is 

 pointed in front. One pair of large eyes was observed on 

 the dorsal side in close proximity to the bases of the 

 antennae. Though others may occur, they were not 

 distinguished. The antennas are ten-jointed and are 

 attached to the dorsal surface of the head very near its 

 cephalic extremity. The first joint is short and about as 

 wide as it is long, the second is large and club-shaped, the 

 third is the longest, and the remaining joints are about 

 equal in length, each being about two-thirds the length of 

 the third joint. The antennse are covered rather densely 

 with hairs, and the last joint bears two pair of knobbed 

 digitules attached near its tip. 



The thorax is large, subquadrate in form, with rounded 

 angles, and nearly as wide as it is long. The wings, which 

 are attached to the lateral margins of the thorax, are thin 

 and delicate and more or less evenly covered with short 

 hairs. Balancers were not observed. The legs (fig. 21) 

 are more slender than those of the female and covered, not 

 very densely, with hairs. They resemble each other in 

 form, and the tarsi each bear four knobbed digitules. 



The abdomen is slightly wider than the thorax and about 

 twice the length of the latter. It is composed of nine seg- 

 ments, the first of which is wider than the others. Those 

 from the second to the eighth inclusive are similar in form, 

 but increase in size to the fourth, then decrease. The 

 ninth (fig. 22) is modified in form, and from it projects the 

 penis. 



