PLATE XIX. 
'ig. Page 
L. Geniohyns minis, Andrews ; symphysis and right rainns of mandible, side 
and (1 a) upper views: nat. size. Fluvio-marine beds (Upper Eocene). 
[Type specimen, C. 8634.] 193 
2. Ge.mohyns fajumensis, portion of right ramns of mandible with 
the premolars, side and (2 a) crown views: nat. size. Same horizon. 
[Type specimen, M. 8435.] 195 
3. Vterodon africanns, Andrews ; right ramus of mandible with cheek-teeth, 
outer view : two-thirds nat. size. Same horizon. 
[Type specimen, M. 8503.] 220 
4. Aiiterodon macrognatlnis, Andrews; right ramus of mandible Avith much- 
worn and broken teeth, inner view: two-thirds nat. size. Same horizon. 
[M. 8437 b.] 226 
5. Ditto ; two right lower molars [m. 2, m. 3) much abraded, inner view : two- 
thirds nat. size. Same horizon. [M. 8436.] 226 
6. Sinopa efkiopica, sp. nov. ; portion of left ramns of mandible with broken 
teeth, inner and (6 a) crown views : nat. size. Same horizon. 
[Type specimen, C. 10193.] 233 
7. (I) Apterodon macrogvat/nis, Andrews ; distal end of right humerus, fnmt 
and (7 a) back views : two-thirds nat. size. Same horizon. [M. 8504.] 231 
c., socket of canine. 
e.f; entepiconclylar foramen. 
i. 1-3, incisors. 
i.C; inner condyle. 
m. 1-3, molars. 
m.f., mental foramina. 
ol.f., olecranon fossa, 
pm. 1-4, premolars. 
pr., process from lon'cr border of mandible. 
