120 KANSAS UNIVERSITY QUARTKRLY. 



The quadrate is fan-shaped, and thin anteriorly. The condyle 

 is very convex and has a superficial resemblance to the distal end 

 of the mammalian femur. Extending upward from this along the 

 posterior border externally there is a prominent ridge which con- 

 tinues upward to the superior border. The groove for the sym- 

 plectic seems to be very small. 



One specimen shows the top of the skull with most of the bones 

 in place. The frontals are long, extending backward as far as the 

 pterotics externally. They meet in the median line by a suture 

 which is probably dentate, although this can not be determined 

 with certainty. On each side there is a small postorbital process. 

 The bones are beautifully sculptured above with coarse sulci which 

 radiate from near the centers of each, internal to the postorbital 

 processes. The parietals are small, meet each other in the median 

 line, and are covered with markings very similar to those on the 

 frontals. The supraoccipital is in a poor state of preservation and 

 probably entered but little into the formation of the upper part of 

 the skull. It seems to have been projected backward for quite a 

 distance and was depressed, as was the rest of the top of the skull. 

 The epiotics and pterotics seem to be united on the side of 

 the skull which is preserved. The pterotics form prominent 

 angles of the skull, while the epiotic processes are not so promi- 

 nent. The two are covered with small pits and tubercles of bone. 

 Just back of the skull there are portions of two other bones which 

 may be portions of the hyomandibular and supratemporal. The 

 first of these presents two articular surfaces, one of which extends 

 outward from the rest of the bone, the two being separated by a 

 wide space, somewhat similar to that found in the hyomandibular 

 of Etiipo. The other is an irregularly shaped bone and has an 

 articular surface on the side next to the skull. There are numerous 

 other small bones, sculptured in a manner similar to the bones of 

 the top of the skull. Three of these are joined together in a 

 chain and from their position would seem to form a part of the 

 rim of the orbital cavity. The remainder of these bones are 

 scattered along near the top of the skull and indicate that this part 

 might have been covered with dermal plates. The orbital cavity 

 is large and the orbit is surrounded by a thin sclerotic ring. Just 

 in front of the orbital cavity, and separated from it by the chain of 

 bones mentioned above, there is a bone which occupies about the 

 position of the ethmoid. It seems to be rather thin and crushed 

 down on the opposite side so that its remaining characters can not 

 be made out. 



