Help required please with last two in:
46d "Dirtier mark on island? Dug around it" (7)
M?D?I?R Looks like it must be MUDDIER for dirtier but don't see where dug around it fits.
48d "Member of group ending in Zulu province" (6)
?U?B?C Can only see QUEBEC for province but if so can't see the parsing.