396 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
previous definition of that element. I have called it the supratem 
poral for reasons which will appear later. 
Fritsch. Ep., epiotic plate; F., frontal; J., jugal; Mx., maxillary; N., 
nasal; Pa., parietal; Pf., postfrontal; Pmx., premaxillary; Po., postorbital; 
Prf., prefrontal; Qj., quadratojugal; So., supra-occipital plate; Sq., squa¬ 
mosal; St., supratemporal. 
Fig. C. — Restoration of the skull of Brcinchiosaurus gracilis, after Credner. 
F., frontal; J., jugal; Mx., maxillary; N„ nasal; Pa., parietal; Pmx., 
premaxillary; Po., postorbital; Pof., postfrontal; Prf., prefrontal; Qj., 
quadratojugal; So., supra-occipital plate; Sq., squamosal; St., supra¬ 
temporal. 
