168 



PISCOGLOSSIDiE. 



a little forwards ; tbe second tbe longest, nearly hori- 

 zontal ; the third intermediate in length between the 

 other two, and horizontal or directed slightly back- 

 wards ; the fourth or fourth and fifth diapophyses 

 nearly horizontal, the sixth and seventh, sometimes 

 also the fifth, directed forwards. Diapophyses of the 

 sacral vertebra triangular, their distal diameter equal- 

 ling or slightly exceeding their length ; two condyles 

 for articulation with the urostyle. Latter nearly as 

 long as or a little shorter than the eight anterior 

 vertebrfB taken together, with a rather strong, curved 

 or posteriorly hooked transverse process at the base. 



Prsecoracoids slender, curved, meeting at an acute 

 angle, entering the glenoid cavity ; coracoids stronger, 

 nearly straight; supra-scapula ossified; omosternum 

 absent; cartilaginous sternum with two feebly calci- 

 fied posteriorly diverging styles. Carpus with eight 

 elements, two of which are in contact with radius- 

 ulna ; a single bone in the poUex. 



Pelvis three-fifths to two-thirds the length of the 

 vertebral column; pubis cartilaginous; acetabulum 

 open. Femur and tibia equal in length, the former 

 strongly curved ; astragalus nearly two-thirds the 

 length of the tibia ; three small cartilaginous tarsalia ; 

 one cartilaginous element to the prrehallux. Distal 

 phalanges obtuse, slightly expanded at the apex. 



Measurejiknts of Skulkton (in millimetres). 



F. typica. V;ir. hoscx. 



Length of skull 



Width of skull 



Least interovbital width 



Dorsal vertebral cohimn 



Urostyle 



Humerus 



Radins-nlna 



Manus 



Pelvis 



Femur 



Tibia 



Tarsus 



Pes 



