166 



DISCOGLOSSID^. 



Measurements (in millimetres), 



3 



1. Paris : Lataste. 



2. French Jura : Ling Roth. 



3. Hameln, Weser ; Wolterstorff. 



4, 6. Valencia, Spain : Bosca 

 (var. boscai). 

 5. Paris: Heron-Royer. 



According to Fatio the female reaches a length of 54 mm. 



Skeleton. — Ethmoid short, embracing above a large 

 fontanelle which extends nearly to the line of the 

 anterior borders of the orbits ; fronto-parietals very 

 narrow, in contact with each other only quite poste- 

 riori}*, with an inward process in the middle which 

 gives the fontanelle the shape of the sole of a shoe ; 

 ethmoid rounded or somewhat produced anteriorly, 

 exposed between the posteriorly diverging inner 

 borders of the nasals, which are large and in contact 

 with each other in front or along the greater part of 

 their length ; a cartilaginous supra-orbital plate is 

 articulated to the nasal and the anterior third of the 

 fronto-parietal. Zygomatic branch of the squamosal 

 very short. Vomers large, narrowly separated from 

 each other on the median line, their posterior toothed 

 borders partly covering the feeble palatines ; pterygoid 

 regularly triradiate, the anterior branch joining the 

 maxillary and the slender palatine ; parasphenoid 

 X-shaped, obtuse or truncated in front, not quite 

 reaching the vomers, and separated from the ptery- 

 goids. Mento-Meckelians very indistinct. 



Hyoid a large, broad, cartilaginous plate with 

 rounded lateral wings, small postero-lateral processes, 

 and long cornua ; a pair of diverging, ossified stylo- 



