SYSTEMATIC INDEX. 
XXXV 
Page 
Family MYLOSTOMATIDiE.315 
Mylostoma ..315 
Subclass TELEOSTOMI.316 
Order CROSSOPTEEYGII .316 
Suborder HAPLISTIA .317 
Family TARRASIIDiE.317 
Tarrasius.317 
-problematicus.317 
Suborder RHIPIDISTIA .318 
Family HOLOPTYCHIID^E.321 
Holoptychius. 322 
-nobilissimus . . •.323 
-giganteus.325 
-americanus.326 
-halli.326 
-- flemingi.327 
-(Glyptolepis) leptopterus .... 331 
-(Glyptolepis) quebecensis .... 336 
-(Glyptolepis) paucidens .... 336 
Dendrodus.338 
-biporcatus.338 
-strigatus.339 
Family FHIZODONTIDiE.341 
Fhizodus.342 
-hibberti.342 
-- ornatus.346 
Strepsodus.348 
-sauroides.349 
•-striatulus.. 352 
-- sulcidens.352 
