259 



Five ^rtebrpe exhibit the character of supporting the neural arch at 

 only one end by a short basal articulation. In three of these, with neural 

 arches remaining, the latter inclose a vertically oval canal. They have a 

 small narrow area above for contact with the carapace, and, although their 

 centra are plane, they are doubtless sacral in position. They display large 

 facets for the diapophyses. The centrum of the last one is shorter, and has 

 ix posterior ball. 



Abundant in different localities in No 5 of New Jersey. 



OSTEOPYGIS EMAUGINATUS,.Cope. 



Extinct Batrachia and Ecptilia of North America, 1870, p. 130, Plato VII, fig. 3. 



Greenland, No. 5, New Jersey. 



EUCLASTES, Cope. 



Proceedings of the Academy of Philadelphia, lti(57, 39 ; possibly identical with Ostcopygis. 



EUCLA8TES PLATYOPS, Cope. 



L. c, and Extinct Batrachia and Reptilia of North America, 1870, p. 147, Plate VI. 



Limestone of No. 5, New Jersey. 



CATAPLEURA, Cope. 



Extinct Batrachia and Iteptilia of North America, 1870, p. 143. 



Catapleura repanda, Cope. 



L. c, 1870, 143, Plate VII, (ig. 2. 



Greensand, No. 5, New Jersey. 

 Catapleuea ponderosa, Cope. 



Proceedings of the American Philosophical Society, 1871, p. 4G. 



Greensand of No. 5, New Jersey. 

 Catapleura chelydrina. Cope. 



Oateopygis chclydrinus, Cope, Extinct Batrachia and Reptilia of North America, 1870, p. 138, 

 Plate VII, fig. 8. 



The reference of the last two species to this genus is not final, as the 

 essential parts of the skeleton, — the anterior costal and marginal bones, — are 

 not known. The type-species differs from the Ostcopygis (in all of which 

 the corresponding marginal bones arc known) in the absence of any costal 

 gomphosis with the second marginal. 



