CONTENTS VII 



Plate Page 



LXXVIII. Skulls and jaws of Metarhinus 894 



LXXIX. Skulls of Metarhinus 894 



LXXX. Skulls of Rhadinorhinus and Metarhinus 894 



LXXXI. Upper dentition of Eoliianoth erium osborni and Diplacodon elatus 894 



LXXXII. Comparison of upper teeth of Rhadinorhinus, Diplacodon, Menodus, and Brontotherium 894 



LXXXIII. Skull of Brontops brachycephalus (paratype) 894 



LXXXI V. Skull of Brontops brachycephalus (referred) , top and side views 894 



LXXXV. Skulls of Brontops brachycephalus (referred), top view 894 



LXXXVI. Skull of Brontops brachycephalus, front and palatal views 894 



LXXXVII. Skulls of Brontops brachycephalus, palatal view 894 



LXXXVIII. Skulls of Brontops brachycephalus and B. dispar 894 



LXXXIX. Skulls of Brontops dispar, palatal views r 894 



XC. Skull of Brontops dispar, top, side, and palatal views 894 



XCI. Skull of Brontops dispar, top and side views 894 



XCII. Skulls of Brontops dispar, top view 894 



XCIII. Skulls of Brontops dispar, side view . 894 



XCIV. Skulls of Brontops dispar, front view 894 



XCV. Skull of Brontops robustus?, side view 894 



XCVI. Type skull and jaw of Brontops robustus, oblique side view 894 



XCVII. Type skull and jaw of Brontops robustus, side view 894 



XCVIII. Type skull of Brontops robustus, top view 894 



XCIX. Type skull and jaw of Brontops robustus, front view 894 



C. Type skull of Brontops robustus, palatal view 894 



CI. Dentition of type skull of Brontops robustus 894 



CII. Lower jaw of Brontops robustus (type) 894 



cm. Type skull and jaw of Brontops robustus 894 



CIV. Type skull of Diploclonus bicornutus 894 



CV. Skull related to Diploclonus tyleri 894 



CVI. Type skull, jaw, and \eeXh oi Diploclonus tyleri 894 



CVII. Naso-frontal region of skulls of Diploclonus 894 



CVIII. Type skulls of Diploclonus amplus and D. tyleri 894 



CIX. Type skull of Diploclonus amplus 894 



ex. Skull referred to Diploclonus amplus? 894 



CXI. Type skull of Allops walcotti 894 



CXII. Type skull of Allops walcotti and skull of Allops? marshif 894 



CXIII. Skull of Allops marshif, side and front views 894 



CXIV. Skulls of Allops marshi, side views 894 



CXV. Skulls of Allops marshi, palatal view of t3'pe, top view of paratype 894 



CXVI. Skulls of Allops marshi? 894 



CXVII. Skulls of Allops serotinus 894 



CXVIII. Skull of Allops serotinus, palatal view 894 



CXIX. Front views of skulls of Allops 894 



CXX. Skulls of Allops crassicornis and A. serotinus 894 



CXXI. Type skull of Allops crassicornis 894 



CXXII. Skull, jaw, and teeth of Allops crassicornis? seu marshi 894 



CXXIII. Type skull of Menodus heloceras 894 



CXXIV. SknWs oi Menodus heloceras (type) and. Brontotherium hatcheri 894 



CXXV. Lower molar and fragment of jaw of Menodus proutii and jaw of Menodus torvus 894 



CXXVI. Jaw referred to Menodus proutii (trigonoceras) 894 



CXXVII. Type jaw of Menodus torvus 894 



CXXVIII. Type skull of Menodus trigonoceras, top view 894 



CXXIX. Type skull of Menodus trigonoceras 894 



CXXX. Skull of Menodus trigonoceras (cotj'pe) and a radius doubtfully referred 894 



CXXXI. Palate of Menodus trigonoceras 894 



CXXXII. Upper molar series of Menodus and Allops 894 



CXXXIII. L'pper teeth of Menodus and Brontotherium contrasted 894 



CXXXI V. Upper and lower dentition of Menodus trigonoceras 894 



CXXXV. Skulls of Menodus trigonoceras and Menodus giganteus 894 



CXXXVI. Skull of Menodus giganteus, side view 894 



CXXXVII. Skull of Menodus giganteus, side view 894 



CXXXVIII. Skull of Menodus giganteus, top view 894 



CXXXIX. QknWoi Menodus giganteus, si&ewiew 894 



CXL. Skull of Menodus giganteus, front view 894 



CXLI. Skull of Menodus giganteus, palatal view 894 



CXLII. Type skull of Menodus varians 894 



CXLIII. Type skull of Megacerops copei 894 



CXLIV. Skulls of Megacerops copei (type) and M. bucco, front view 894 



CXLV. Skulls of Megacerops copei (type) and M. bucco, palatal view 894 



