PLATE XIV.— (Continued. ) 
PAGE. 
PROETUS LALIMGARGENA TUS) le SDaciet te en lene cae chores aie 195 
. Dorsal and lateral views of a nearly complete cranidium. 
Jacksonburg, Locality 174A. (x2). 
Dorsal view of the same, natural size. 
A complete free cheek. Same locality. (x2). 
21. The same. Natural size. 
2. A complete pygidium. Jacksonburg, Locality 174 A." 
(6x2) 
. The same. Natural size. 
Restoration in outline of the complete head. (x2). 
. A large pygidium which doubtfully belongs to this species. 
PTERYGOMETOPUS,2 Spy UNGeh wala sae leeieeare ee tener ere 
An incomplete free cheek, differing from other representa- 
tives of this genus in its elongate genal spine. Jack- 
sonburg, Locality 174 A.“ (x2). 
. The same. Natural size. 
