106 ODONTORNITHES. 



Measurements of First Phalanx of Third Digit. {Hesperornis crassijies, No. 1474.) 



Length of first phalanx, 39. 11 



Transverse diameter of proximal end, 9.0 



Transverse diameter of proximal articulation, 9.0 



Least vertical diameters of distal articulation, 8.5-10.0 



Least vertical diameter of shaft, L 8.0 



Least transverse diameter of shaft, 7.0 



Greatest diameter of shaft, at distal end, 10.0 



Least diameter of shaft, at distal end, i 8.5 



Least vertical diameter of distal articulation, * 7.5 



Transverse diameter of distal articulation, 7.5 



Measurements of Second Phalanx. {Hesperornis regalis, No. 1200.) 



Length of second phalanx, 30. 11 



Greatest vertical diameter of proximal end, 14.0 



Transverse diameter of proximal end, 8.0 



Vertical diameter of proximal articulation, 11.0 



Transverse diameter of proximal articulation, 7.0 



Least fore and aft diameter of shaft, 7.0 



Least minimum diameter of shaft, 4.0 



Greatest diameter of distal end, u 8.0 



Least diameter of distal end, 6.5 



Greatest diameter of distal articulation, .. 7.8 



Transverse diameter of distal articulation, 6.0 



Measurements of Third Phalanx. {Hesperornis regalis, No. 1200.) 



Greatest diameter of proximal end, 10.0 m 



Least diameter of proximal end, l 5.5 



Greatest diameter of proximal articulation, 9.0 



Least diameter of proximal articulation, 5.0 



The Second Digit. (Plates XIX and XX.) 

 The second digit was much smaller than the third, and composed of 

 three phalanges. It was supported by the short free extremity of the inner 

 element of the tarso-metatarsal bone, and was directed inward and 

 forward. 



The proximal end of the first phalanx (Plate XIX, figure 1) was 

 raised above the general plane of the foot. Its proximal end is trihedral 

 in outline, and the distal end also, although the shaft is twisted so that the 

 boundary lines of the two are not parallel. The two extremities are 



