160 



Annals of the Carnegie Museum. 



Measurements. 



Mm. 



From anterior of canine to posterior of M^ 208 



Length of symphysis IIO 



Width of posterior border of symphysis, between horizontal rami... 24 



Width of jaw at canines 60 



Depth " under P^ 50 



Depth " " Mj 54 



Thickness" " My 32 



Length of canine 28 



Width of canine 25 



Length of diastema between C and Pg 36 



Length of premolar series 46 



Length of molar series 1 00 



From Sage Creek about seven miles northeast of Lima. 



OLIGOCENE. 



White River. 

 REPTILIA. 

 Helodermoides tuberculatus gen. et sp. nov. 

 No. 707. Figs. 4 and 5. 

 Portions of the top of a skull and part of a mandible were found in 

 the beds on Pipestone Creek near Pipestone Springs in Jefferson 

 County. 



The bone in the frontal region is thick and cellular, but is much 

 thicker farther forward. The top of the skull, as in Heloderina, is 



Fig. 4. Helodermoides titherciilatits (No. FiG. 5. Same as Fig. 4. Part of 



707), White River Beds, Pipestone Creek, mandible. a, outer view; b, inner 



a, top of skull, upper view ; b, the same, view. Natural size. 

 lower view. Natural size. 



