A worldwide community photographing and learning about wildlife
Notoxus monodon
The shell has a piece that hangs over the head a little bit, as you can see in photo 3.
On a butterfly pea http://www.projectnoah.org/spottings/163... in a dry, grassy area at the beginning of Hog Pond Trail in the Withlacoochee State Forest
First representative of this genus on Project Noah
Don't know enough to help you down to species; to me it looks like N. marginatus or monodon. The one IDed in bugguide for Florida is N. seminole, but it looks different.