CAIMANOIDEA VISHERI, A NEW CROCODILIAN 



49 



of the expansion, the width is but 66 mm 

 across the quadrates, is 

 approximately ioo mm. 

 The length of the skull, 

 along the median line from 

 the posterior border of the 

 supraoccipital to the tip, is 

 some 1 80 mm. From the 

 posterior edge of the quad- 

 rates to the tip of the muzzle 

 the measurement is 203 mm. 

 Unlike the most of the Croc- 

 odilia, the inter-orbital 

 region is fiat, or essentially 

 so, rather than presenting 

 the marked concavity. 



All the bones of the facial 

 region of the skull are sculp- 

 tured by more or less pro- 

 nounced rounded pits or 

 longitudinal grooves except 

 the posterior ends of the 

 nasals. In the maxillary 

 region, the markings are 

 more or less ill defined and, 

 for the most part, take the 

 form of long and narrow 

 longitudinal grooves. The 

 pits of the posterior frontal 

 region are round, well de- 

 fined, and deep. They are 

 crowded close together and 

 separated by narrow ridges 

 only. The pits average 

 2.5 mm. in diameter, per- 

 haps, in this region. On the 

 jugals and squamosals, the 



The greatest width, 



