376 Annals of the Carnegie Museum. 



5. The manus, like the pes, is undoubtedly entaxonic in structure in 

 Brontosaurus and very probably so in Diplodocus and Morosaurus. 



Explanation of Plates. 



Plate XIX. 



Palmar view of radius, ulna and manus (No. 563) showing position of bones as 

 they lay imbedded in the matrix, u, ulna ; r, radius, x, scapholunar ; s, sesamoid ; 

 metacarpals and phalanges indicated by their respective numerals. 



Plate XX. 



Dorsal view of the same. I-etters same as above. Both figures a little less than 

 J/s natural size. 



ARNEGiE Museum, December 28, 1901. 



