MAIRWARRA, or Realm of the Maïrs, in Hindustan, a mountainous tract, consisting of a number of parallel ridges extending in a direction from N.E. to S.W., and constituting that portion of the Aravalli range which lies between Komulmer and Ajmere, a space of about 90 miles in length, and varying in breadth from 6 to 20. The tract is interposed between the Rajpoot states of Oodeypore and Joudpore. Its north-eastern extremity is in Lat. 26. 10, Long. 74. 30.; its south-western in Lat. 25. 25, Long. 73. 60. Mairwarra was ceded to the British in 1818 by Scindia, but the states of Oodeypore and Joudpore having urged claims to a portion of the country, their validity was hastily and unadvisedly recognised. The inconvenience of three independent states claiming to exercise the powers of government in a country so circumstanced was, however, subsequently mitigated by arrangements under which the whole was placed under British management. The principal place in the district is the newly-established town of Nya Nugga, which promises to be the seat of considerable trade. British Mairwarra contains an area of 282 square miles, with a population of 37,715. The portion allotted to Oodeypore has an area of 305 square miles, and that belonging to Joudpore a superficial extent of about 67 square miles.