Editorial note — Part 1.-- Vertebrata. (continued 2)

(a) the otic capsule becomes embedded in the brain-case wall; (b) the palato-pterygoid rod lies completely underneath the brain-case instead of laterally to it; (c) the squamosal tilts down and in, instead of down and out, and the lower jaw articulates with its outer surface instead of below its inner, and, moreover, with the enormous distention of the brain-case it comes about that the squamosal is incorporated with its wall.