The He-177 was referred to as the Algeirs bomber and was intended in theory to be able to bomb Algeirs from Germany and return.
http://photos.mercantilemarine.org/m...=675&g2_page=1
Mentioned on this forum previously:
http://forum.12oclockhigh.net/showthread.php?t=17422
The aircraft may have participated in convoy attacks in the mediterranean or alternately have been used for reconnaisance perhaps?
I have not found mention of the He-177 in the area however earlier than Nov 1943.