94 ODONTORNITHES. 



Measurements of Patella. ' (No. 1477.) 



Total length of patella, 103.0" 



Length of posterior side, 90.0 



Greatest diameter of articulation, 1 41.0 



Least diameter of articulation, 27.0 



Distance from foramen to upper end of patella, 75.0 



Measurements. {Hesperomis crassipes, No. 1474.) 



Total length of patella, 109.0 n 



Length of posterior side, 98.0 



Greatest diameter of articulation, 38.0 



Least diameter of articulation (approximate), . 25.0 



Distance from foramen to upper end of patella, 82.0 



The Fibula. (Plates XV and XX.) 

 The fibula of Hesperomis agrees essentially with that of Pocliceps in 

 its general characters. It is about three-fourths of the length of the tibia, 

 and was united to the fibular ridge of that bone only by cartilage. The 

 proximal end is sub-quadrilateral in outline, and presents two articular 

 facets; a large outer one, which is slightly concave, for union with the 

 outer facet of the femur, and a smaller, oblique face on its inner margin, 

 which meets the outer part of the femoral ridge, separating the fibula from 

 the tibia. The distal half of the fibula is slender, and gradually tapers to 

 the pointed lower extremity. This bone appears to be solid throughout, 

 with no cavities, except minute vascular foramina. 



The measurements which follow give the main dimensions of the 

 fibula in Hesperomis regalis : 



Measurements of Fibula. (No. 1200.) 



Length of fibula, . 240.0 mm 



Antero-posterior diameter of proximal end, 22.0 



Transverse diameters of proximal end, 13-15.0 



Greatest diameter of shaft, 17.0- 



Measurements. (No. 1476.) 



Antero-posterior diameter of proximal end of fibula, 23.0 mm 



Transverse diameter of proximal end, 12.0 



Greatest diameter of shaft, 16.0 



Antero-posterior diameter of shaft, at same point, 8.5 



