22 



PEOCEEDIJSTGS OF THE ISTATIOFAL MUSEUM 



VOL. 77 



Figure 15. — Ribs of Palaeoscincds rdgosidbns. Type. No. 11868, U.S.N.M. A 

 Thoracic rib; B, First? thoracic rib; O, Posterior cervical rib ; ' Z)/ Rib op 



UNDETERMINED POSITION. ALL FIGURES ABOUT ONE-FOURTH NATURAL SIZE 



