pterinochilus murinus mating vid

[christopher furlong]

Hi everyone,
I was browsing the net for T vids and found this : ( pterinochilus murinus courtship and mating ) on youtube. Sorry, not sure how to provide it as a direct link, the vid quality is not the best but its a really cool vid. female ends up flat on her back while mating, is this normal behaviour for this Sp ?
Cheers all
Chris