1914] The Ottawa Naturalist. 149 



Gryposaurus notabilis, in which rase the species would be known 

 as Gryposaurus selwyni. 



Measurements. Feet. Inches. 



Height of head from lower edge of dentarv to 



highest point of nasal 1 <h 



Height of same from lower edge of surangular to 



highest point of squamosal 1 8 



Length of same from anterior end of premaxilla to 



posterior edge of squamosal 3 3 



Breadth between upper rim of orbits 9f 



Breadth between expanded lower anterior border 



of premaxillae 9h 



Length of lower jaw, including predentary 3| 



Depth of lower jaw at midlength from outer 



alveolar border to lower edge of dentary Sh 



Height of quadrate 1 41 



Length of dental grinding surface of lower jaw in 



advance of the anterior margin of the coronoid 



process 1 



Breadth of same at midlength 1 " 



Length of supratemporal fossa 6 



Width of same 4 



Height (oblique) of lateral temporal fossa Ill 



Width (horizontal) of same at midheight 5^ 



Height (oblique) of orbital opening 8| 



Width (horizontal) of same 5 



Length of nasal opening 1 0$ 



Width of same at midlength 2^ 



Greatest length of premaxilla from front margin 



to termination above lachrymal 1 {, l 



Greatest length of predentary 8^ 



Length of nasal, in a straight line 1 7^ 



Length of frontal at midline of head 3f 



Max. breadth of same 4| 



Length of coalesced parietals (approx.) 7 : [ 



Last summer Mr. Sternberg's party on Red Deer river was 

 fortunate in discovering also a fairly complete skeleton with the 

 skull, including skin impressions, of Chasmosaurus belli, sl species 

 founded by the writer in 1902,* on part of the coalesced parietals, 

 and at that time assigned by him to the genus Monoclonius. 

 The characters of the skull have revealed a new generic type, for 

 which the name Protorosaurus** has lately been proposed.*** 



Contributions to Canadian Palaeontology, vol. Ill (quarto), pt. 11 

 **The Ottawa Naturalist, vol. XXVII, No. 10, January, 1914 

 ***See fc.t-note. p. 155 



