296 EHYNCHOCEPHALIA. 



Described and figured by Owen in bis ' Cat. Foss. Eept. 

 S. Africa,' p. 69 (No. S. A. 121), pi. lxx. fig. 3. 



Presented by A. G. Bain, Esq. 



47093. Slab of rock containing part of a larger skeleton, referred by 

 Owen to the present form ; from the Sniewberg. 



Same history. 



Suborder SPHENODONTINA. 



Premaxillse forming a more or less deflected beak ; the longi- 

 tudinal series of palatine teeth separated by a groove (into which 

 the hinder mandibular teeth are received) from those of the maxilla 

 (figs. 68, 69). Eibs with uncinate processes. 



Family EHYNCHOSAUEIDtE. 



Wares undivided ; no teeth in the premaxillary beak or opposing 

 portion of the mandible, which were probably sheathed in horn ; 

 extremities of the premaxillaB received between diverging extremities 

 of mandible; frequently more than a single row of palatine teeth. 

 Intercentra at least frequently absent. 



Genus RHYNCHOSAURUS, Owen 1 . 



Skull of moderate width, with relatively large orbit and infratem- 

 poral fossa ; dentary border of palato-maxilla but slightly convex, and 

 external border only slightly concave and inner slightly convex. Not 

 more than a single row of maxillary, or than two rows of palatine 

 teeth. Mandibular symphysis relatively short, with short and obtuse 

 rostral processes ; and rami with but slight posterior divergence. 

 Mandibular teeth either wanting or very minute. All the vertebra) 

 amphiccelous. Manus of moderate length. 



Rhynchosaurus articeps, Owen 2 . 



The type species. Estimated length from snout to sacrum 0,280 • 

 length of skull 0,080. 

 Hah. Europe (England). 



1 Trans. Camb. Phil. Soc. vol. vii. p. 355 (1842). 2 hoc. cit. 



