Chakavian
Chakavian in its actual use is the least spoken Serbo-Croatian dialect, being spoken only by 12% Croats. It is now mostly reduced in southwestern Croatia along the eastern Adriatic: Adriatic islands, and sporadically in the mainland coast, with rare inland enclaves up to central Croatia, and minor enclaves in Austria and Montenegro. All areas of old contacts with Romance languages.
Dalmatian language
Dalmatian or Dalmatic was a Romance language spoken in the Dalmatia region of present-day Croatia, and as far south as Kotor in Montenegro. The name refers to a tribe of the Illyrian linguistic group, Dalmatae. The Ragusan dialect of Dalmatian was the official language of the Republic of Ragusa, although in later times Venetian (representing the Romance language population), then Eastern Herzegovinian dialect of Serbo-Croatian (for the Slavophone population), came to supersede it.