CANIDiB. 907 



or less complete skeletons; seven more or less fragmentary maxillary bones 

 with teeth, and nine more or less broken mandibles with teeth. 



A nearly perfect skull displays the following characters: The orbits 

 are entirely anterior to the vertical line dividing the sktill into halves, and 

 the muzzle is proportionately shortened. It is also narrowed anteriorly, 

 and its median line above is shallowly grooved. The interorbital region is 

 greatly convex to the supraorbital region, and is gi'ooved medially. The 

 postorbital processes are mere angles, and are flattened from below. The 

 cranium is much constricted behind the orbits, where its diameter is not 

 greater than the width of the premaxillary incisive border. The sagittal 

 crest is much elevated, and forms a perfectly straight and gradually rising 

 outline to its junction with the incisor. The borders of the latter are very 

 prominent, extending backwards considerably beyond the brain case. The 

 zygoma is rather slender, is elongate, and but little expanded. The otic 

 bullte are very large ; the paroccipital processes are directed backwards, at 

 an angle of 45°, and are rather elongate and acute ; they cap the bullae 

 posteriorly. The lateral occipital crests bound a fossa of the occipital region 

 near the condyles. The occipital surface is directed horizontally backwards 

 above the foramen magnum. This part of it, and its superior portion, are 

 divided by a median keel. 



The basioccipital is keeled on the middle line below^ The sphenoid is 

 not keeled, and is concave, its borders descending on the inner side of the 

 bullae. The pterygoid fossa is rather narrow, and the hamular process is 

 short. The posterior border of the palate does not extend anterior to the 

 posterior edges of the last tubercular molar, and its middle portion projects 

 backwards in a triangular process. The palatine fossa for the inferior sec- 

 torial is shallow. The superior surface of the postorbital region is roughened. 

 Foramina. — The foramen infraorhitale exterius is rather large, and issues 

 above the anterior border of the sectorial tooth. The/ incisiva are short, not 

 extending posterior to the middle of the canines. The / palatina are oppo- 

 site the posterior border of the sectorial. The / laclirymale is altogether 

 within the orbital border. The / opticum is rather large. This species is 

 peculiar in having thaf.f. spheno-orhitale, rotundum, and alisphenoidale anterius 

 united into one large external orifice. The alisphenoid canal is larger than 



