Its a Dornier Pfeil, a remarkable airplane that as so many others was to little and to late to turn the tide for the Germans.

http://en.wikipedia.org/wiki/Dornier_Do_335

Robert van der Veeke Basugasubasubasu Basugasubakuhaku Gasubakuhakuhaku!! "Better is the enemy of good enough." Dr. Mikoyan of the Mikoyan Gurevich Design Bureau.