466 MEMOIRS OF THE CARNEGIE MUSEUM. 



EXPLANATION OF PLATE LXL 



Fig. 1. Diceratherium cooki, type. Carnegie Museum, No. 1572. 



Fig. 2. Diceratherium niobrarense, type. Carnegie Museum, No. 127L 



Fig. 1, 5 natural size; Fig. 2, I natural size. 



