Diameter of cervical centrum < vertical 



'transverse . 



r antero-posterior 

 Diameter of anterior dorsal centrum ■? vertical 



' transverse 



12 



annectens, and has an acute inferior angle, which is wanting in 

 the latter. 



Measurements. 



No. 1. M. 



^-longitudinal 020 



.020 

 .018 

 .020 

 .022 

 .019 



No. 2. 



! antero-posterior . .023 

 vertical . . . .019 

 transverse . . .019 



Champsosaurus annectens, Cope, sp. nov. 



The greater number of vertebras obtained belong to this saurian, 

 which may therefore be looked upon as the type of the genus. 



The cervical which bears the hypapophysial facet presents a 

 carina below, which is only prominent between the articular faces. 

 One such cervical in the collection is rounded below, and may be 

 anterior in the series, or may belong to another species. The in- 

 ferior keel is strong on the other cervicals, but soon disappears 

 on the anterior dorsals. The remaining centra are rounded be- 

 low. The parapophyses where present are knob-like, and the 

 corresponding part of the transverse process is similar in the 

 anterior dorsal vertebrae. The base of the neural arch is nearer 

 the anterior than the posterior articular face. These faces are 

 nearly round in the anterior caudal centra, but soon become ver- 

 tical ovals, with the compressed form. There is a fossa below 

 and in front of the parapophysis, which continues to beyond the 

 anterior dorsals. The dense layer of the surface of the centrum 

 is smooth, except some delicate striatums near the articular 

 borders. These are most marked along the median inferior face 

 of the caudal vertebras, which is flat, grooved, and distally acute. 



I cannot certainly connect the vertebrae of a series as those of 

 a single individual. 



Measurements. 



No. 1. M. 



/ antero-posterior .023 



Diameter of a cervical with hypapophysis < vertical . . .021 



'transverse . .020 





