. Geological magazine. ^ Dr. R. H. Traquair—On the Genus Megalichthys. 121 The same fact being observable in two separate specimens, it cannotbe looked upon as a mere accidental variety in shape. The mandible (Fig. 5) seldom exhibits the oblique groove, indi-cating the original separation of the dentary element, which is sooften observed in M. Hibberti. Jugular plates were present; principal(Fig. 6), median and lateral, but these do not call for any specialcomment; nor do the opercular bones, which are sometimes founddetached, and exhibit the ordinary shape. The teeth are seldom seen : wh
. Geological magazine. ^ Dr. R. H. Traquair—On the Genus Megalichthys. 121 The same fact being observable in two separate specimens, it cannotbe looked upon as a mere accidental variety in shape. The mandible (Fig. 5) seldom exhibits the oblique groove, indi-cating the original separation of the dentary element, which is sooften observed in M. Hibberti. Jugular plates were present; principal(Fig. 6), median and lateral, but these do not call for any specialcomment; nor do the opercular bones, which are sometimes founddetached, and exhibit the ordinary shape. The teeth are seldom seen : when visible, they appear rather smallerin projDortion than in M. Hibberti, though of the same general appear-ance. The scales and superficial bones of the head have their free sur-face covered with a laj^er of smooth and brilliant ganoine,which undera lens shows a minute punctation quite similar to that in M. difference in shape of the maxilla and of the parietal portionof the cranial shield are to my min
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