PLATE XLI. 



PAGE. 



Fig. 1. Ptyonius pectinatits. Natural size 377 



2. Ptyonius numinifer. Natural size 374 



3. Ptyonius 7iummiifer, without head. Natural size .■ - 374 



4. Ceraterpeton ptmctolmeatuTn. The right posterior angle of the cranium preserved 372 



To the right hand are two pectoral shields of a lar^e specimen. 



5. SauropUura N&wberriana. Posterior part of cranium with dentition; and loose abdominal 



scutella 404 



