MAMMAL-LIKE REPTILES, Hapah 
anterior face has a contact with the supraoccipital, postorbital, 
and squamosal. Its lower border forms the upper side of the 
post-temporal fossa, and its outer edge is thickened and with the 
squamosal forms a long, vertically placed auditory groove, 
The squamosal (S8q., text-fig. 17) is only incompletely preserved ; 
as shown it has a parietal ramus, which covers much of the front 
face of the tabulare and extends inwards to overlap the posterior 
end of the postorbital. With the tabulare it forms the auditory 
groove on the postero-lateral corner of the skull, and beyond this 
sends forwards a massive zygomatic part on the outer surface of 
the skull. 
Text-figure 18. 
A. Titanosuchus. Wateral aspect of the same specimen as text-fig. 17. 
B. Titanosuchus. Posterior aspect of skull. B.M.N.H. X ¢- 
I.Par., Interparietal; Tas., Tabulare. 
Except for the suture with its fellow and the frontal, the 
parietal is completely shown. It is a small bone in contact with 
its fellow except for the pineal foramen, which is a round hole. 
The two bones form a special little projection raising the opening 
more than a centimetre above the general line of the surrounding 
bone. 
