Archzeopteryx macrura. 439 
The somewhat flattened glenoidal head of the humerus 
articulates at the point where these bones meet the median 
plate. 
These two bones may thus be taken for scapule (fig. 1, s), 
formed nearly as in Pterodactyls and Birds. 
If this determination be right, one has to ask what is be- 
come of the other bones of the shoulder-girdle—the coracoids, 
the clavicles, and the sternum. 
The London slab shows the two scapule wholly detached. 
Prof. Owen has described besides an injured bone, having the 
form of a hook, which in that slab is entirely isolated, calling 
it the furcula. In our specimen we see no trace of this fur- 
cula, so characteristic of Birds. It is possible that this bone 
may remain in the counter-slab, or that it may be lost ; but 
either supposition seems to me hardly probable. I incline 
rather to think that the bone Prof. Owen calls the furcula is 
rather the pubis, which, in our specimen, is still hidden in the 
matrix. Here are the facts on which I rely :— 
The pelvis described by Prof. Owen is only rudimentary, 
and consists, according to him, of parts of the iliac and ischi- 
atic bones united around the acetabulum. The pubis is want- 
ing. Whether, he says, “it has retained its individuality in 
Archeopteryx*, or has been broken away from the part of the 
ilium indicative of the place of its original attachment and 
relations to the acetabulum, I cannot determine. So far as 
the appearance of the pelvis can be discerned and, by me, in- 
terpreted, they give no evidence of a reptilian structure.” 
I believe that Prof. Owen would not now formulate an opinion 
so positive, when we know better the pelvis of the Dinosaurs, 
so like that of Birds. 
By examining the pelvis of the Pterodactyls, and especially 
of the Rhamphorhynchi, 1am come to the conviction that the 
bone described by Prof. Owen as the furcula ought to be the 
pubis. Andreas Wagner described and figured the pubis of 
the Rhamphorhynchi in the Memoirs of the Academy of 
Munich (vii. 1862, pls. 6,17). He says, “The two pubic 
* [It is to be noted that throughout his memoir Prof. Owen preserves 
this erroneous spelling of the word Archeopteryx.—TRANSL. | 
