The arms show parts of a vanilla plant (orchid), as vanilla is of great importance to the local economy.
ANTANANARIVO / TANANARIVE
The arms are quartered with a zebu head and a lily. The lily represents France, the zebu head refers to the favorite and blessed animal of the Malagasy people.
The motto means : "One thousand men cannot die in one day".
The plant in the top of the arms is the "ravenala" or "traveller's tree", common to Madagascar. I have no information on the meaning or origin of the lower part of the arms. Any information is welcome !
The arms show a large baobab tree, typical for the region. The chief shows some boats, indicating that Majunga is a main harbour town. The elements are similar to those of Morondava.