3D: Tube fare from Italy. 8 letters. ?a?l???i
4d: One old-fashioned pagan symbol. 4 letters. ?d?e
18d: Note shilling included in the money. 4 letters. d?s?
13a: Be victorious although powerless by laughter. 8 letters. ??e?c?m?
Thanks Mamyalynne. I must have 8a wrong so if macaroni is the answer as I have an L in 3D. Clue is : a drop of white stuff in winter and I put snowflake for answer ?? Hence the L ??