THE MALLEUS OF THE LACERTILIA, ETC. 589 



Fig. 4. — Diagram of the normal malar. (After P. Albreclit). 



a: + y + 2. Postmalar (Posterior postfrontal, Albreclit.) (Post- 

 frontal, DoUo). + Premalar (Anterior postfrontal, Albreclit.) 

 (Jugal, DoUo). + Hypomalar (Quadrato-jugal, Albrecht). 



By comparison with the Sauropsida M. Albrecht arrives at 

 the following interpretation of these parts : 

 Premalar — Anterior postfrontal. 

 Postraalar — Posterior postfrontal. 

 Hypomalar — Qiiadrato jugal. 



Lastly, in his opinion a small isolated bone discovered in a 

 young Cynocephalus appears to represent the jugal, which 

 is usually co-ossified with the supramaxillary bone. 



I regret that I cannot agree with his conclusions, for in fact : 



1st. The bone of the Cynocephalus appears to me to be 

 simply a wormian bone, which has appeared at this spot as if 

 for the very purpose of leading to the construction of a theory. 



2nd. In M. Albrecht^s comparison, the jugal is excluded 

 from taking part in the contour of the orbit, an arrangement 

 of which I know no other example, not even in the Lacer- 

 tilians with the double postfrontal. 



3rd. "Why should it be desired to assign to the human sub- 

 ject two postfrontals, when in the Sauropsida this structure is 

 only to be met with amongst the Lacertilia, and even amongst 

 these an exception rather than the rule ? 



(Continued on page 592.) 



