MR. W. K. PARKER ON THE OSTEOLOGY OF BALAINICEPS REX. 
. Hypo-parapophysis. 
. lst dorsal vertebra (the dotted line 
leads to the scapula). 
. Lower part of sacrum. 
. Caudal vertebrz. 
. Appendages of ribs. 
i. Ilium. 
. Ischiadic notch or foramen. 
. Ischium. . 
. Pubis. 
. Sternum. 
. Costal process. 
. Furculum (behind this bone is the 
coracoid). 
. Scapula (upper letters). 
. Humerus. 
. Radius. 
. Ulna. 
/, Olecranon. 
. Upper carpal. 
. Lower carpal. 
Metacarpus (the bones below these 
are the phalanges). 
. Os femoris. 
. Tibia. 
. Fibula. 
. Tarso-metatarsus. 
. Metatarsal of second toe or hallux. 
. Condyle of hallux. 
. Hallux or true second toe. 
. Third or inner toe. 
. Fourth or middle toe. 
. Fifth or outer toe. 
. Hyoid bones, half nat. size. 
. Basi-hyal, with rudiment of uro- 
hyal. 
. Thyro-hyal (the joint between the 
proximal and distal pieces is not 
shown in this figure). 
Fig. 3. 
z. 
Fig. 4. 
Fig. 5. 
tb. 
tmt. 
Posterior aspect of atlas, nat. size. 
Post-zygapophysis. 
Lateral aspect of atlas, nat, size. 
Inferior aspect of 9th cervical 
vertebra, nat. size. 
. Pleurapophysis. 
. Parapophysis. 
. Carotid canal. 
. Centrum. 
. Superior aspect of 9th cervical 
vertebra, nat. size. 
. Centrum. 
. Diapophysis. 
. Pre-zygapophysis. 
. Post-zygapophysis. 
. Superior aspect of a dorsal vertebra 
(middle dorsal region), nat size. 
. Spine (metaneurapophysis). 
. Diapophysis. 
‘s. Pre-zygapophysis. 
. Post-zygapophysis. 
. Anterior aspect of tibio-tarsal 
joint, nat. size. 
. Tibia, distal end. 
. Tarso-metatarsus, proximal end. 
. Posterior aspect of tibio-tarsal 
joint, nat. size. 
Tibia, distal end. 
Tarso-metatarsus, proximal end. 
Fig. 10. Anterior aspect of distal end of 
tmt. 
tarso-metatarsus, nat. size. 
Tarso-metatarsus, proximal end. 
c3,c4 &c5. Condyles for 3rd, 4th 
& 5th toes. 
Fig. 11. Posterior aspect of distal end of 
tmt. 
tarso-metatarsus, nat. size. 
Tarso-metatarsus. 
c3,c4&c¢5. Condyles for 3rd, 4th 
& 5th toes. 
