"4 



1. Dorsum of skull of Diceratosaurits punctolineatui (Cope), from the Coal Measures of Linton, 



Ohio. Original in the Museum at Berlin University. X 2. After Jaekel. />o=postorbital; 

 /r=frontal; ^o/'=postfrontal; /'=jugal; /a=!acrimal; wjt-=maxilla; ;».j="perisquamosal;" 

 ^^=post-parietal; ^>«;ir=premaxilla. 



2. Ventral surface of the skull of Z??V-^ra/o.sa«r»i^««(-fo/tKd'a/«i (Cope), from the Coal Mea.sures of 



Linton, Ohio. X 2. After Jaekel. <7=anterior palatine vacuity; f.r=exoccipital; y=jugal; 

 OT;r=maxilla;^r=transverse;/'rt/=palatine;^/=pterygoid;;>r^pre vomer ;/>.s^" pe ri squamosal;" 

 />z'=posterior or suborbital palatine vacuity; /i/;=parasphenoid. 



3. Pectoral girdle of /-'!rfnifo.?rt«r«.s /!>««<"/o/;«f(z/«i (Cope), from the Coal Measures of Linton, Ohio. 



Original in the paleontological Museum at Berlin. X 2. After jaekel. f/2=inner side of 

 clavicle; jVr=interclavicle; r/=clavicle (lower side); f/if=cleithrum. 



4. [e] Cervical or anterior dorsal vertebra oi Diceratosaurtis piiticlolineatits (Cope), from the Linton, 



Ohio, Coal Measures, ff =caudal vertebra shown with its cap of dermal bone; rfz'=dorsal 

 vertebra with ribs; jrzzdermal plate on neural spine; A=humerns; «=ulna; r=radius. 



