` :::::::::::And Ethnologue doesn't list ``dialects``.  It only lists those entities that have been called ``languages`` by some reliable source in the past.  At some point, in some publication, those Dravidian speech forms were listed as Dravidian languages by a specialist in Dravidian languages.  That's the only way that information gets into Ethnologue; it's the only way information has ever gotten into Ethnologue.    `