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PEOFESSOK OWEN’S DESCRIPTION OE THE CAYEEN OF 
Description op the Plates. 
PLATE LVII. 
Fig. 1. Working-surface of teeth of upper jaw, Equus cab alius, d. 
Fig. 2. Working-surface of teeth of lower jaw, Equus caballus , d. 
Fig. 3. Working-surface of deciduous molars, upper jaw, Equus caballus , d. 
Fig. 4. Working-surface of deciduous molars, lower jaw, Equus caballus , d . 
Fig. 5. Working-surface of lower series of molars, Equus spelceus (Bruniquel). 
Fig. 6. Working-surface of teeth of lower jaw, Equus sjpelceus (Puy-de-Dome). 
Fig. 7. Fore part of lower part of mandible with first permanent incisors and first right 
grinder in place, Equus sjpelceus (Bruniquel). 
Fig. 8. Portion of left ramus, lower jaw, with first grinder right and point of permanent 
canine protruding, Equus sjpelceus (Bruniquel). 
PLATE LVIII. 
Permanent dentition of Equus asinus and Equus hemionus. 
Fig. 1. Working-surface of teeth of upper jaw, E. asinus, d . 
Fig. 2. Working-surface of teeth of lower jaw, E. asinus , d . 
Fig. 3. Working-surface of teeth of upper jaw, E. hemionus, d . 
Fig. 4. Working-surface of teeth of lower jaw, E, hemionus , d. 
PLATE LIX. 
Permanent dentition of Equus quag g a and Equus Burchelli. 
Fig. 1. Working-surface of teeth of upper jaw, E. quagga, . 
Fig. 2. Working-surface of teeth of lower jaw, E. quagga, d . 
Fig. 3. Working-surface of teeth of upper jaw, E. Burchelli, 2. 
Fig. 4. Working-surface of teeth of lower jaw, E. Burchelli, ?. 
PLATE LX. 
Fig. 1. Working-surface of upper permanent grinders, Equus zebra , d . 
Fig. 2. Working-surface of upper permanent grinders, Equus sjpelceus , var. A. 
Fig. 3. Working-surface of upper permanent grinders, Equus sjpelceus, var. B. 
Fig. 4. Working-surface of first and second molars, and of the germs of last premolar 
and last molar of Equus spelceus, var. B. 
Fig. 5. Outside view of last two deciduous molars and of germs of three functional pre- 
molars of Equus spelceus, var. B. 
