"The Perino"
Interesting. I'd forgotten all about that one.
Here's a picture of one (in assault configuration, and apparently modified to take belts)
http://thedonovan.com/archives/2009/04/the_whatziss_an_3.html
It's also interesting that you say the mechanism would put the empty cases back in the feed strip, and that that little nuance was apparently adopted only on the Breda 1937, another Italian design.
" An easy way to differentiate a magazine from a clip or charger is that, with the exception of a revolver, a magazine may or may not be used in conjuction with a clip/charger but a clip/charger is always used in conjuction with a magazine (revolvers are the exception as their cylinder replaces the magazine and can be used in conjuction with a clip)."
I'm just not at all sure that I agree with that when you bring the Hotchkiss-style strip fed guns into the equation.
George Chinn, author of "The Machine Gun," (written for the US Navy's Bureau of Ordnance) refers to the Hotchkiss-style strips as "clips," and no where does he mention the word magazine in reference to the Hotchkiss.
From Chinn's section on the Hotchkiss (as found on the web):
"Instead of feeding ammunition in fabric belts, the Hotchkiss uses metal strips. The cartridges are packed in these
clips, each containing 30 rounds, and having a length of about 15 inches. Each loaded strip is in an ordinary pasteboard box, from which, when opened, it may be fed directly to the gun. The feed mechanism consists of a spur wheel, which engages in cams cut in the piston, and in openings formed in the
clip. It is so arranged that the feed strip may be engaged, with breech either open or closed. The strips being so constructed as to lock one with another, a series may be fired without the necessity of cocking the gun each time by hand."
Also, later in the section:
"The lower part of the breechblock face strikes the base of the cartridge, stripping it from the feed
clip and driving it forward into the chamber."
Chinn also talks about the Perino 1901, and again refers to the strips as "clips."
If an authority on automatic weapons as eminent as George Chinn describes it as such, I'm sorry, but I've got to go with it. Chinn's work is still the seminal work on the subject.