440 Prof. Carl Vogt on 
bones are united into a single bone, long, curved, and twice 
bent angularly.” One would take these bones for a fureula 
if one had not seen them in position, and if one did not 
know positively that the Pterosaurs had no furcula. 
The pubis being missing from the London slab, the fur- 
cula from ours, otherwise so perfect, and Prof. Owen’s sup- 
posed furcula being wholly detached and broken, I accord- 
ingly believe (considering the remarkable agreement of the 
Pterosaurs) that it is the broken pubic bone which Prof. 
Owen described, that the Archeopteryx was, like the Ptero- 
dactyls, unprovided with clavicles, and that it had the pubis 
consolidated into a single bone. Further examination of our 
slab can alone decide this controversy. 
Dismissing the clavicles, the coracoids and sternum remain. 
One or the other must be wanting in Archeopteryx, for 
neither the London slab nor the new one allow of both these 
bones being found. 
The first thought which offers itself is that the median 
plate, extending between the two scapulz in our specimen, 
must be the sternum. In that case the coracoid would be 
wanting. 
Now the coracoid (co) is never wanting in Reptiles and 
Birds. With the scapula, it is the most important, I would 
say the most normal, portion of the shoulder-girdle in all the 
Sauropsids that are furnished with fore-limbs. While the 
clavicles (f) and the sternum (st) may become rudimentary, 
or even fail completely, the coracoid always unites with the 
scapula in forming the humeral joint. 
The shoulder-girdle of the Crocodiles and the Pterosaurs 
partly corresponds with the simple structure that we suppose 
Archeopterye had. The shoulder-girdle of the Crocodiles, 
detached from the trunk and placed in the position of that of 
our Archeopteryx, shows (fig. 2) coracoids, long, flat, and 
widened above, turning back round the ventral face of the 
thorax, so as to be attached to both sides of a sternum elon- 
gated into a very fine point, and widening only behind the 
meeting surfaces. The upper rounded side of the coracoid is 
united to the scapula by very tight ligaments, and in the 
