QUATERNARY FAUNA OF GIBRALTAR. 135 
Fig. 3. Portion of humerus, with the distal articular end entire. 
Fig. 4. An entire radius, with the lower portion of the ulna in situ: a, proximal 
articular surface ; }, distal articular surface. 
PLATE XXV, 
Fig. 1. Right femur of Jbex: a, head. 
Fig. 2. A right femur of the largest size. 
Fig. 3. A right tibia: @, proximal articular surface; 5, distal articular surface. 
Fig. 4. The distal end of a tibia of the largest size: a, distal articular surface. 
Figs. 5 a, b, c. Different aspects of the astragalus, 
Figs. 6 a, b, ¢. Different aspects of an ungual phalanx. 
PLATE XXVI. 
Figs. 1-4. Metacarpals of Ivex, of various sizes. 
Figs. 5, 6. Metatarsals. 
PLATE XXVII. 
ODONTOGRAMS. 
Nore.—The diagrammatic figures termed “ Odontograms” (see Proc. Roy. Soc. vol. xviii. p. 544, 
1870) are intended to supply the place of tables of measurements of the teeth, and at the same time 
to exhibit graphically their proportional dimensions in each case. The figures also serve to indicate 
which of the teeth of the typical series are absent or present. They are to be read thus :— 
The squares in each transverse series contain the odontogram of the upper or lower (molar) 
dentition, or, in the case of the smaller animals, both, in which case the maxillary is marked a, and 
the mandibular 4; and on the left-hand margin the name of the tooth with which each horizontal 
line throughout the series corresponds, is indicated. In the figures themselves each dark horizontal 
line corresponds with a single tooth, whose antero-posterior diameter, or length, is shown by the light 
shade, and transverse diameter or thickness by the dark shade. As the paper upon which the 
figures are laid down is divided into 20ths of an inch (0°05, =0-:00126 metre), the dimensions of 
the teeth can be read off at once. 
Fig. 1. Maxillary molar dentition of Hyena spelea. 
Fig. 2. Maxillary molar dentition of H. crocuta (Gibraltar). 
Fig. 3. Maxillary molar dentition of H. erocuta. 
Fig. 4. Maxillary molar dentition of H. brunnea. 
Fig. 5. Maxillary molar dentition of 1. striata. 
Figs. 6 and 6a. Maxillary and mandibular dentition of Ursus ferox fossilis. 
Figs. 7 and 7a. Maxillary and mandibular dentition of U. ferox s. horribilis. 
Figs. 8 and 8a. Maxillary and mandibular dentition of the Gibraltar Ursus. 
Fig. 9. Maxillary dentition of U. letourneuxianus. 
Fig. 9a. Mandibular dentition of U. faidherbianus. 
