8EEL&T0N. 



431 



two bear ribs which reach the sternum and are clearly thoracic ; 

 these are followed by a variable number (about six) of vertebrae 



P' 



Fio. 239. — Skeleton of Neirphron percnopterus (from Claus). CC carpus; CB clavicle; 

 Co coracoid ; Du inferior spinous processes of the thoracic vertebrae ; F fllula ; Fe femur ; 

 n humerus ; Jl Uium ; Js ischium ; Me metacarpus ; P', F", P'" phalanges of the fingers ; 

 Pb pubis ; Pu. uncinate processes of the ribs ; R radius ; Rh cervical ribs ; Sc scapula ; St 

 flternum ; Stc sternal portions of ribs ; T tibia ; Tm tarso-metatarsus ; £7 ulna ; Z toes. 



