Dec., '04] ENTOMOLOGICAL NEWS. 335 



white spot covering nearly all of the dorsal surface of the segment ; 

 sheaths of the ovipositor black, ovipositor brown. 



Type : Acad. Nat. Sciences, Philadelphia. 

 Type locality : Milwaukee, Wisconsin. 



One specimen July 30, 1904. (S. Graenicher). Bred from 

 nest of Ceratina dnpla. 



Anasa Tristis DeG.; History of Confined Adults; 

 Another Egg Parasite. 



By A. ARSENE GIRAULT. 



On May i5th, 1904, a pair of these bugs, found in copula 

 on a squash plant, were confined without separation, in a 

 glass jar covered with cheese-cloth, and containing several 

 inches of fresh earth ; a fresh leaf of their food-plant was 

 added from da)* to day. 



They remained connected for some time, but were found 

 separated on the morning of the i6th. However, sexual con- 

 nections continued, off and on, until the morning of the 2ist, 

 when they were last observed. On the morning of the 23rd, 

 the 9 was found dead, without depositing any eggs The 

 S remains in good condition. 



Upon dissection, the abdomen of the 9 was found to be 

 almost devoid of contents, and no eggs were present. This 

 was, at first, inexplicable, but was later explained by the 

 appearance, on the morning of June yth, of a large Tachinid 

 with an orange abdomen, found flying noisily about in the jar. 

 That a 9 thus infested should go naturally about her functions 

 seems peculiar at first thought. 



On the gth of June, morning, another 9 , captured from a 

 squash plant was introduced into the jar with the original S . 

 The following morning they were sexually connected, showing 

 the <? to be polygamous, and hence liable to be found in rela- 

 tively smaller numbers. Again, on the igth of June, they 

 were in copula, while the 9 had previously oviposited as 

 follows: June 15-16, 23 eggs; June 16-17, 22 e gg s ; June 

 18-19, J 3 e ggs> all f which were fertile. At 2 P. M., the 

 2Oth of June, the female was found ovipositing on a stem of a 



