472 Dr. Oi-.Tiiislav Petroiiicvics on the 



F\ix. 1. 



cose 



.-T^V 



J 



-m.pra.r. 



Pectoral 1 in of I'vsthenopteron, British Mii.«eiim specimen P. 6790. 

 Nat. size. 



, fleitlirum ; cose, the possible coraco-scapula ; l.a.rf.., the hrst axonost 

 or the basal; ^.rt,?i., second axonost ; 5. cm/., third axonost; Jf.axt., 

 fourth axonost; I.pra.r., first preaxial radial; Il.pra.r., second 

 prf^axial radial ; Ill.prn.r., third preaxial radial ; pa.pr., postaxial 

 process ; dermal rays are represented by lines. 



