632 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59. 



between the articular surface for the head of the radius and that for 

 its distal end the diameters are found to be 8.5 mm. and 6.2 mm. 

 In a humerus of T. taxus at hand, slightly shorter, the diameters 

 are 8 mm. and 5.2 mm. The height through the coronoid process 

 is 15.5 mm.; in T. taxus, 13.6 mm. In the fossil there is a deep 

 groove in the outer face which starts beneath the greater sigmoid 

 cavity and runs down the bone. Beyond the middle of the length 

 of the ulna this groove becomes shallow. In T. taxus it continues on 

 distinctly to near the lower articular surface for the radius. On the 

 inner face of the fossil bone a ridge starts at the coronoid process 

 and continues to near the lower end of the ulna. At the middle of 

 the length of the bone it approaches the hinder border; then retires 

 from it, and ends below in a sharp crest. In T. taxus the ridge is 

 practically missing in the middle third of the length. 



Besides the ulna there is a part of the right innominate bone 

 (Cat. No. 10209.). This (pi. 119, fig. 5) consists of the pubic bar 

 which bounds the obturator foramen below and the part of the 

 schium that bounds it behind. When this is compared with the 

 corresponding parts of Taxidea taxus berlandieri, from Matamoras, 

 Mexico (No. 1389 U.S.N.M.), they are found to be very different. 

 The fossil bone is narrower, but much thicker. The pubic bar 

 where narrowest is 5.4 mm. wide and 2.8 mm. thick; in T. taxus, 



6 mm. wide and 2.2 mm. thick. The pubic symphysis is of about 

 the same length in the two species, 10 mm.; in the fossil it is 7 mm. 

 thick; in T. taxus, 3.3 mm. The bar Bounding the obturator fora- 

 men behind makes a greater angle with the pubic bar than it does 

 in T. taxus. At the rear end of the obturator foramen the bone is 



7 mm. wide and 5 mm. thick; in T. taxus, 5.5 mm. wide and 3 mm. 

 thick. 



CANIS NUBILUS? 



Three left rami of lower jaws (Cat. No. 10210) ; the lower half of a 

 right humerus (Cat. No. 10211); the lower fourth of a smaller one 

 (Cat. No. 10212); a complete right radius (Cat. No. 10211); the distal 

 half of another of the left side (Cat. No. 10213); an axis (Cat. No. 

 10214); the distal ends of two right tibiae and apparently the corre- 

 sponding astragali (Cat. Nos. 10218, 10219) are referred with doubt 

 to Canis nubilus. The humerus and the radii evidently belonged to 

 one individual, and it seems probable that the best of the three jaws 

 was a part of the same skeleton. The animal belonged evidently 

 to a large and apparently slender-limbed form. The radius is longer 

 by as much as an inch than in some gray wolves. At the same time 

 the bones are slenderer than in those specimens. One wolf (No. 1308 

 of the United States National Museum), collected in 1853, at Fort 

 Kearney, Nebraska, regarded as C. nubilus, has, however, a radius 

 only slightly longer. 



