Look closely at the Colonisation book map and you'll see Cuba and Haiti as shaded to the Race's colour. No, I don't know why either, particularly since the Race has a tendency to ignore small islands. My biggest nit with the map in the book is why does Japan have Indochina? They've been forced off the rest of the mainland, and in "Striking the Balance" Japan, like Britain, was not treated seriously by the Race at the negotiating table, so why do they still have it? I could understand the East Indies - as I said, the Race ignores small islands - but Indochina?
I grouped them together because I think they're still de facto the British Commonwealth, though de jure they've drifted apart.