Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
] 
2 
3 
4 
5. 
6 
7 
8 
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Wot as eos 2. ow mS as & 
PROFESSOR OWEN ON THE AYE-AYE. 99 
. Tympanic cavity, exposing co-articulated parts of malleus and incus. 
. Appendicular fossa. 
. Foramen ovale. 
. Foramen rotundum. 
. Foramen opticum. 
. Olfactory fossa, with cribriform plates. 
. Sinus frontalis. 
. Pituitary fossa. 
. External auditory foramen. 
. Entocarotid foramen. 
. Pterygo-palatine foramen. 
. Incisive foramen. 
. Vomerine fissure. 
. Sinus sphenoidalis. 
. Naso-maxillary foramen. 
. Dental foramen. 
. Mental foramen. 
. Antorbital foramen. 
. Condyloid process 
. Angular process fo mandible or lower jaw. 
. Coronoid process 
PLATE XXI. 
. Atlas vertebra, front view. 
. Atlas vertebra, back view. 
. Atlas vertebra, side view. 
. Axis vertebra, front view. 
Axis vertebra, side view. 
. Cervical vertebrz, side view. 
. Fourth lumbar vertebra, upper view. 
. Fourth and fifth lumbar vertebre, side view. 
9. 
Sacrum, upper view. 
10. Five first caudal vertebre, upper view. 
11. Sternum and clavicles, front view. 
In the foregoing figures :—a «, hypapophysis of atlas ; ca, centrum of atlas, 
anchylosed as the ‘ odontoid process’ with—c v, centrum of axis; », neural 
arch; ns, neural spine; d, diapophysis ; p/, pleurapophysis ; m, metapo- 
physis ; a, anapophysis ; 2, zygapophysis ; h, hemapophyses. 
. 12, Right scapula, coracoid, and clavicle ; front view. 
