70 



MEMOIES OF THE CARNEGIE MUSEUM 



suture, with the zygomatic process of the squamos..! to form the rather slender, but 

 widely expanded, zygomatic arch/ 



On account of the old age of both the animals to which our skulls belonged it is 

 impossible to determine the exact character of the lachrymals. They are seen, 

 however, to form a very small portion of the anterior border of the orbits. 



The frontals are broad and convex transversely, indicating the presence of quite 

 capacious frontal sinuses. Anteriorly they are separated for a considerable portion 

 of their length by the nasals. Posteriorly and superiorly they display rather rugose 

 suj)erciliary ridges. These converge quite rapidly and unite to form the extremely 



Fig 1. Skull of Daphoetms felinus Scott, with occipital crest removed from right side to show the great develop- 

 ment of sagittal aud occipital crests ; a, superior and inferior limits of sagittal and occipital crests ; b, superior and 

 inferior borders of brain-case. Natural size but foreshortened. (No. 492. ) 



high and sharp sagittal crest, which is more prominent than in any recent carnivore 

 known to the present writer. 



The sutures of the cranial region are so obliterated by age in both individuals 

 that it is impossible to determine the relations of the different elements of this 

 region. Posteriorly the sagittal crest expands into an extremely high and sharp 

 occipital crest which overhangs the occipital condyles. By this unusual develop- 

 ment of the sagittal and occipital crests the capacity of the brain-case is reduced to a 

 minimum. The relative development of these crests as compared with the capacity 

 of the brain-case in Daplioenus is comparable only with that which obtains in Didel- 

 phys among recent mammals or in some of the Oligocene Elotheres and Hysenodons. 



'The zygomatic arches in Daphcenus have been generally described as robust, but they are well preserved in the 

 present specimens and I find them more slender than in modern canines of equal size. 



