The bottom gun is called a Warnant type flobert system rifle which is just a particular design of flobert breach. I doubt that it was a parlor gun but rather an inexpensive .22, assuming it is a .22. The parlor guns or zimmerbuchsen that I have seen were a .177 cal rimfire much like the BB caps only smaller. At least some of them were converted muzzle loaders with a small caliber barrel about 8" long at the muzzle and a long firing pin running up the former bore of the gun. They also tended to have very elaborate stocks.
cheers mooncoon