_Agapostemon texanus_ Cress. Two specimens collected August 5, at two P. M. The insects were collecting pollen from the small stamens, to which they clung while they forced the pollen out by pinching the anthers between their fore legs. Pollen was stored on the hind legs. The insect was not seen to come in contact with the tip of the large stamen or the stigma. _Apis mellifica_ Linn. Taken at two P. M., August 5. They sometimes came in contact with large stamen and pistil, but more often did not touch them at all. Occasionally both stamen and pistil would come in contact with the same side of the insect’s body. Short stamens were sometimes approached from above, the large stamen and pistil remaining untouched. _Anglochora pura_ Say. Taken at 10:30 A. M., August 6. Obtained pollen from the large stamen by alighting on it, crawling to the tips, and collecting it from the terminal pores. _Halictus_ sp. A smaller insect than the preceding one, but obtained pollen in the same manner.[J] No humblebees were taken around Lawrence, although many were noticed working on the plants; consequently the names of the species noticed cannot be given. In St. Joseph, Mo., there were taken at three P. M., when bees were not generally seen working on the plant: _Bombus virginicus._ One specimen. _Bombus pennsylvanicus._ One specimen. An examination of fifty flowers taken at this time showed from the dented condition of the small stamens that they had all been visited. Between eight and nine A. M., September 3, when bees were numerous, there were taken: _Bombus virginicus._ Two specimens. _Bombus pennsylvanicus._ Twelve specimens. _Bombus scutellaris._ One specimen. The writers found that the humblebees were the principal agents effecting cross-pollination. It was observed that the bee in visiting the flower allowed itself to rest on the tips of the extending stamen and pistil, which, being of the same length, came in contact with both sides of the body just in front of the hind legs, these being left perfectly free. The weight of the bee springs down both stamen and pistil.