The Italian Polka, the Snake Schottische and quite likely under other names as well.
It's the final polka and a bit of a mellée but amazingly in the middle of the hurtling bodies there are couples dancing a suicidal variation which stops, starts, gallops on and then picks up on 4 step-hops in the music.
It's a couple dance and you start with a ball-room hold. You can think of the dance in 4 parts, there's indeed a snippet of polka in there and the step-hop-step-hop-step-hop-step-hop of the schottische
The rhythm is a one-two-three-hop, at least for the first three parts, just as you'd dance a polka to....
For 'forward', think Ballroom Direction and face anticlockwise round the room, the man is on the inside and the woman is on the outside. For the first move you stand a little as if you were going to start a Tango.
In this dance, it matters which foot you start off with...
This is where you see the Snake Schottische bit. The move is quite pronounced..
Given the right music you can mix some normal schottisches, some polkas, some Ideal Schottisches and some Italian Polkas. The only caveat being both Ideal and the Italian Polka benefit from a little extra space.
In a final polka, take care not to stop just in front of some galloping polka-ers if you decide to change to the Italian.
As with the Ideal, the music is an eight-bar hornpipe or schottische and this dance works better to something a little crisp. 16-bar tunes can work but the 'typical' 4-bar French/Breton schottische tune won't help you enough with the phrasing; the music needs to drive the hops in the B2 part.