141 



CONO. 



Conocephalites chippewaensis. Owen. See Lonchoceph- 

 alus chippeivaensis. Potsdam form. L 



Conecophalites elegans. See Conocoryphe elegans. M. G, 



Conocephalites formosus. See Ptychoparia robbi. M. G. 



Gonocephalites gemini-spinosus. See Conocoryphe mat- 

 thewi. M. G See foot note to page 1S4^ ahove. 



Gonocephalites hamulus. See Lonchocephalus hamulus. 

 Potsdam formation. I, 



Gonocephalites halli. See Ptychoparia orestes. L. G. 



Gonocephalites matthewi. See Conocoryphe matthewi. 

 M. G. 



Gonocephalites miser. See Ptychoparia miser. L. G, 



Gonocephalites neglectus. See Ptychoparia tener. M. G. 



Gonocephalites teucer. See Ptychoparia teucer. Z. G. 



Gonocephalites thersites. See Ptychoparia orestes, var. 

 thersites. M. G. See page 134. 



Gonocephalites vulcanus. See Ptychoparia vulcanus. 

 Z. G. See foot note to page 134. 



Gonocephalites (Atops) trilineatus. See Ptychoparia 

 trilineata. Z. G. See page 134. 



Gonocoryphe . . Ford, 1880. See Ptychoparia trilineata. 

 Z. G. See foot note to page 134. 



Conocoryphe {Salteria) baileyi {Gonocephalites laileyi). 



L.C, 



Pl4 



Walcott. Bui 



letin U. S. G. S. 



No. 10, page 32, 



f plate 4, fig. 3, 

 (a large head, 

 drawn twice its 

 natural size) ; 

 fig. 3 ^, (side 

 of head and 

 cheek spine, 

 natural size). 

 Plate 5, fig. 7, 

 ( a tail-piece, 

 pygidium); fig. 

 7 a (portion of 



