The Cussac aliens were a group of extraterrestrials allegedly sighted on August 29, 1967, in Cussac, France. The witnesses were two children, Francois Delpeuch and his sister Anne-Marie, as well as their dog Medor.
One of the humanoid beings was bending over, apparently busy with something on the ground, and another held a mirror-like object. The creatures were "completely black", but with a shiny look which Francois compared to that of silk. The children could not be certain whether the color was that of the beings' skin, or of some sort of protective suit, for there was no visible dividing line between any possible clothing and the heads of the beings, which were bare. If there was a protective suit of some kind, it was perfectly fitted. The arms were somewhat too long and thin. The children could not distinguish anything which might serve as hands. The legs were short and thin. The head seemed of normal proportions relative to the body, but the cranium, nose, and chin were equally pointed. (ufoevidence.org)
The children reported seeing a sphere-shaped UFO, 2 meters in diameter, and "four little devils" on the ground. The craft was of a bright silvery color and possessed landing gear consisting of three or four straight legs, equipped with round "shoes" 10 centimeters in diameter.
At some point, Francois called out, "Have you come to play with us?" At this moment the small beings, who did not seem to be interested in the children, became aware that they were under observation. The first one took off vertically and then plunged head first through the top of the sphere. The second followed in the same way, and the third, after getting up, did likewise. The fourth also got up, but before diving into the machine, came down again and seemed to pick up the mirror from the ground. (ufoevidence.org)
- It could be assumed that the aliens misinterpreted Francois's question as a threat, causing them to flee.