24 DISCOSAURUS. 



4. Two vertebrfc, a carpal and two metacarpal bones and a phalanx, apparently 

 all from the same individual. The specimens were found, with others, m Burlington 

 County, N. J. 



Of the vertebrae, the one represented in Figs. 7, 8, 9, Plate V, is almost identical 

 in form and size with the first described specimens from Alabama. The articular 

 surfaces of its body present intermediate characters to those of the Alabama speci- 

 mens and the one from Mississippi. As previously stated, in the former, the articular 

 surfaces are defined by a narrow groove from the rest of the body, of which an acute 

 edge forms one boundary of the groove and the prominent convex periphery of the 

 'articular surface the other. In the Mississippi specimen the corresponding groove 

 is nearly obsolete, so that the articular surfaces appear defined from the rest of the 

 body by an acute edge. In the Jersey specimen the acute edge forms a conspicuous 

 linear ridge, and a feeble groove defines this from the articular surfaces. The latter 

 are less depressed towards the centre, and less prominent at the periphery than in 

 the Alabama specimens, but in both characters are more so than in the Mississippi 

 specimen. In the Jersey specimen the inflections for the apparent accommodation 

 of che\Ton bones are deeper than in the Alabama specimens, and give the under 

 part of the body at its extremities a remarkably festooned appearance, as repre- 

 sented in Fig. 8. The body inferiorly, between the inflections, in front and behind, 

 does not exhibit the ridges so prominently as in the other specimens, but is other- 

 wise the same. 



The measurements of the vertebra are as foUows : — 



Lines. 

 Length of the body in the median line inferiorly between the acute edges . . 22 

 Length between the lateral inflections of the latter ...... 14 



Length of the body laterally between the acute edges . . . . .20 



Extreme length of the body between the prominent margins of the articular ex- 

 tremities . 24 



Breadth of the articular extremities 34 



Height of the articular extremities 27 



Width of spinal canal 6 



Transverse diameter of costal pits 13 



Vertical diameter of costal pits . . . . 10 



The other vertebra, represented in Figs. 1, 2, 3, Plate V, much larger than the 

 former, appears to belong to the back part of the cervical series. The body is a 

 transverse section of a cylinder flattened from above downward and moderately 

 narrowed at the sides and underneath towards the middle. The articular extremities 

 are nearly plane surfaces, transversely elliptical, but emarginate above, and are de- 

 fined from the rest of the body by a sub-acute border. The general level of the 

 posterior surface is slightly depressed, and its periphery is sliglitly convex. The 

 anterior surface is a little more depressed, but presents a slight central prominence. 

 The under part of the body is less depressed than the sides, and it presents three 

 large venous foramina. The vertebral arch is coosificd with its body on a level 

 with the floor of the spinal canal, which is almost a plane surface. The spinal 

 canal is large and ovoid in outline. A portion of the spinous process, preserved in 

 the specimen, proves it to bo a strong, broad plate. It is deeply grooved behind 



