That is the "ninth" seal. I watched episode 9 and memorized teh seals for that jutsu about a year ago (I've forgotten them by now...which isn't necessarily a bad thing). While he is chanting the seals, at one point he says "ninth rat", then makes the seal you described, then the rat, then the next seal in the order he is chanting. I'll assume to make a "ninth" anything, you have to perform that seal before the other one.Originally posted by: Kovash
Btw, the Mystery seal (Clanched Fist layed on Open palm) in the 'Suiryuudan' is an upside-down Dog (Open Palm layed on Clenched fist ) I don't know what it is supposed to be though, and it's NOT a badly drawn dog, cause I checked the manga and the sumbols are completely different.