LIST OF ILLUSTRATIONS. 



PLATE IV. 



JIo. 



Fig. i'l. Arvioola ripariui, aknll from above "** 



Kig.43. " " skull In profile ' 1^9 



KIk.44. " " left Jaw, ont«i(le 'W 



t'lg. 4f>. " " sknll from below 'W 



KIg. 46. " " iikiill from above *"* 



Kig.47. " " skull In profile ^*8 



Flg.48. " " left Jaw, ontdltle *** 



Fig. 49. " " aknll rroni below..*. <** 



Fig.OO. " (oifiumdl, iknll from above 6*89 



Klg.r.l. " " aknll in profile 9808 



Flg.na. " " left Jaw, onlalile «*» 



Kig. M. " " aknll from below WW 



Fig. 54. " zaiifAoffiialAiM, ekull from above 1*118 



Flg.WJ. " " akull In profile 18118 



FIk.56. " " lift Jaw, outalde 18118 



Fig. 57. " " aknll from l>elow 18118 



PLATE V. 



Fig. 58. Anicola aNaferu, aknll from above 1863 



F'„.59. " " aknll In profile 1889 



Flg.60. " " Jaw, both aide* , 18«8 



Flg.61. " " akoilfVom below : 1868 



Fig. 68. kuU from above. .". 948 



Flg.63. " " aknll in profile .♦. 948 



Flg.64. " " left Jaw, ontalde 948 



Flg.66. " " aknll from below 948 



Fig.66. '• curfalM, akull from above 18160 



Flg.OT. '• " aknll In profile 18169 



Flg.68. " " leftjaw.onteldo 1S169 



Fig.69. " " akull from below 19169 



Fig. 70. " pinetomm, akull from above 1930 



Flg.71. " " akull in profile 1990 



Fig.72. " " left jaw, outaide 1030 



Flg.73. " " Hkull from below 1930 



Fig. 74. SgnaplotKHi cooptri, skull from above 6916 



Flg.75. " " akull in profile 6915 



Fig.76. " " leftjaw.onteldo ;.... 6015 



Flg.77. " " akullfVom below 6016 



Nora.— Tbe nninbers of the rlgbt-hand column at« thow of the speeimen* Kgored. 



