Dec, '04] ENTOMOLOGICAL NEWS. 323 



As females taken from this swarm a few days previous had, 

 in several cases, over loo eggs, in one case 133, and as Mr. 

 W. W. Miles saw so many of the sperm sacs attached to the 

 females of the same swarm on June 27th, and as I again saw 

 them so abundant in a neighboring swarm on July 29th, it 

 seems probable that copulation takes place more than once, 

 particularly as the individuals in a swarm develop very closely 

 together. As nearly as could be ascertained, the swarm at Eddy 

 had all been adults since June 25th, and probably for several 

 days prior to that time. 



The manner of ovipositing is to bring the tip of the ovipos- 

 itor well forward beneath the abdomen and insert it in a nearly 

 perpendicular position. Hill sides and hill tops, where the 

 vegetation is scanty and where the bushes are small, seemed 

 to be the favorite places for egg-laying. A clay or adobe soil 

 with many small cracks in the thin surface crust where the 

 ovipositor could be easily inserted was especially used for 

 egg-laying. 



The sperm sac measures from 10 to 12 millimeters in diameter 

 when first obtained from the male, and it all appears to view 

 during the last few seconds of the copulatory act. As soon as 

 it appears to view the female begins to run about, dragging 

 the male upon his back behind her until, catching upon some 

 object, he is pulled loose. 



The sac, when first received, is suggestive of the brain of a 

 higher vertebrate in form, there being two large lobes corres- 

 ponding to the cerebral hemispheres and beneath these four 

 smaller lobes corresponding to the quadrigemina somewhat 

 enlarged. The upper pair of these little lobes are somewhat 

 smaller than the others and are pale yellowish in color resemb- 

 ling cartilage. The larger pair are milk-white in color at first, 

 even whiter than the hemispheres, and it is these that are 

 clasped by the vulva of the female. At D of the accompany- 

 ing plate the two large hemispheres and the two milk-white 

 lobes are all that show, the other pair of lobes being hidden 

 behind the small pair shown. 



After being held in the vulva of the female for a short time 

 the small milk-white lobes become gradually translucent and 



