298 JOURNAL OP ECONOMIC ENTOMOLOGY [Vol. 1 



they were observed similarly disposed at various times during the 

 next few days. On May 17th I removed the leaves from the vial 

 and carefully examined them for eggs. Several were found situated 

 inter-epidermally, sometimes singly, sometimes in pairs. They were 

 inserted through punctures sometimes made through the upper epi- 

 dermis of the leaf, sometimes through the lower, apparently. These 

 eggs were whitish in color, elliptical in outline, and measured .55- 

 .6 mm. in length by .35- .4 mm. in width. 



The development of this lot of eggs was not watched, but some 

 that were deposited during the twenty-four hours preceding the even- 

 ing of ]\Iay 20, and which were dissected on May 28, were found to 

 contain embryos apparently full grown. Again, newly hatched larvse 

 were found ]May 29 on a clover leaf which contained eggs laid during 

 the twenty-four hours preceding the evening of May 22. Thus the 

 time elapsing between the deposition of the eggs and the hatching 

 of the larvae in these two instances was about eight days. In both 

 cases the vials containing the clover leaves were kept in a moderately 

 cool and dark room in the house, where the temperature probably aver- 

 aged 60° to 70°F. The first pupa that I obtained was from a larva 

 which hatched in the field and was brought in a few days before it 

 pupated. This pupa was found on May 23, and there was no sign 

 of a cocoon. It was found lying on a leaf, with no evident attempt 

 at concealment. When touched it wriggled vigorously. 



About June 1st the first pupa in its cocoon was found. This cocoon 

 was not unlike that of P. punctatus, except, of course, that it was 

 much smaller and appeared to be more carelessly constructed. It 

 seemed to be rougher on the outside, and the meshes not so evenly 

 formed as in the average cocoon of its near relative. It was formed 

 at the top of the vial, between a piece of paper and the cork. 



On June 6 I found another cocoon, containing a pupa, which was at- 

 tached to one of a bunch of clover leaves in a vial. Later (on June 

 16) I found a cocoon snugly ensconced in a clover blossom that was 

 in one of my vials. The duration of the pupa state in one case that 

 I observed was about four days — not more. This specimen was kept 

 under conditions similar to those described above for the eggs. 



A beetle that emerged on June 15 began at once to feed upon its 

 cocoon and soon completely devoured it. In this case the vial en- 

 closing the beetle had nothing else in it. Lack of other food probably 

 accounted for this apparently peculiar proceeding, as I observed no 

 other similar case. 



None of the larvas which hatched in confinement were carried 

 through to maturity, so I have no data bearing upon the length of 



