EXPLANATION OF PLATE VII. 



Bones of OrnUlwsaurians and Sauroplerygians, oue-liall' natural size, excepting Figs. 3-4, which are natural 



size. 



Fig. 1. Wing-metacarpal of PIcrodacfi/his nmbrosus, Cope, from below. 



2. Phalange of first rank of the same digit. 



3. Lateral carpal of the same, natural size. 



4. Phalange of clawed digit of same individu.al. 



5. Wing-metacarpal of Ptcrodactijlus occideiilaUs, from below. 



(). First phalange of wing-finger of same, but doubtfully of the same iudividual. 

 7. I'olycotylus lalipimm, humerus from inner side ; 7 o, from edge. 



