. Carnegie Institution of Washington publication. pmx pm -psq \Sft C B Fig. 36.—Pariotichus brachyops. No. 4760. Am. Mus. A. Lateral restoration of skull. X i- p>"x, premaxillary; mx, maxillary; n, nasal; /, lachrymal; pj, pre- frontal; y, jugal; /, frontal; po, postorbital; p, parietal; sq, squamosal; psq, prosquamosal. B. Restoration of upper surface of skull. X f. Lettering as in A. C. Left side of same specimen as shown in D. D. Lateral view of skull, xf. Lettering as in A. There is no resemblance between these skulls and those of the genus Capto- rhtniis, though most of the skulls
. Carnegie Institution of Washington publication. pmx pm -psq \Sft C B Fig. 36.—Pariotichus brachyops. No. 4760. Am. Mus. A. Lateral restoration of skull. X i- p>"x, premaxillary; mx, maxillary; n, nasal; /, lachrymal; pj, pre- frontal; y, jugal; /, frontal; po, postorbital; p, parietal; sq, squamosal; psq, prosquamosal. B. Restoration of upper surface of skull. X f. Lettering as in A. C. Left side of same specimen as shown in D. D. Lateral view of skull, xf. Lettering as in A. There is no resemblance between these skulls and those of the genus Capto- rhtniis, though most of the skulls of the latter genus were originally described as Pariotichus. As they form a distinct and separate group they have been placed together in a separate family, Captorhinida. Measurements. mm Length of the type skull 22 Width of same at back 22 Length of skull of homotype Width at back 14 Isodectes megalops Cope. Characteristic specimen: A small skull, No. 4329 Am. Mus. Nat. Hist. Cope Coll. The skull is fairly well preserved and shows a fine reticulate sculpture. No palatine teeth can be made out and the teeth on the premaxillary and the anterior Fig. 37.—Jsodectes sp. A. Upper view of skull, pmx, premaxillary; mx, maxillary; n, nasal; /, frontal; ptf, postfrontal; pot, postorbital; p, parietal; /, jugal; sm, squamosal; st, prosquamosal; soc, supraoccipital plates. After Cope. B. Restoration of skull according to the author, x $ This restoration shows the skull too wide, as the bones have been placed to show their full width. Lettering as in previous figures. C Lower jaw, showing numerous teeth. X ^. part of the maxillary are more sharply conical than those on the lower jaw. The lower jaw has a prominent coronoid process and just anterior to this the dentary is widened and there is a patch of small blunt teeth. They are partly obscured by the matrix, so that the exact position can not be made out, but they seem to be irreg- ularly arranged; in the anterior portion of th
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