Contributions to Palaeontology. 



141 



tal limb. The posterior portion of the limb is sometimes scarcely 

 convex, and in others it is elevated in a convex band. In its short 

 broad truncate-conical glabella it resembles C. shumardi ; but in 

 that species the cheeks are more elevated towards the eyes, and the 

 anterior margin of the frontal limb is abruptly elevated into a 

 sharp narrow ridge, the dorsal furrow is deeply pitted at the anterior 

 angles of the glabella, and the glabellar furrows more deeply 

 impressed. 



The species associated with this one are C. diadematus, C. shumardi 

 and C. perseus. 



CONOCEPHALITES OWEtfl (n. s.). 

 PLATE III. FIGS. 17 & 20. 



Glabella ovate-conical, the width at base equaling or a 

 little less than its length from the occipital furrow, regu- 

 larly convex and gently curving in front. Posterior 

 glabellar furrows extremely oblique, the middle ones less 

 so, and reaching not more than one-third across ; the 

 anterior furrows not distinctly seen. Occipital furrow 

 shallow, of equal width throughout, or sometimes nearly 

 obsolete at the extremities and a little wider in the mid- 

 dle : occipital ring having about the same convexity as 

 the back part of the glabella. Dorsal furrow well 

 defined, not sharp or deep, and continuing of the same 

 depth in front of the glabella. 



Fixed cheeks narrow. The line of the facial suture, from 

 the front contour, is nearly vertical (with the exception 

 of the palpebral curvature) to the posterior glabellar 

 furrow, whence it turns obliquely outwards, leaving a 

 narrow posterior limb, which has' a lateral extension 

 two-thirds as great as the width across the axis at the 

 occipital ring : frontal limb regularly convex, and curv- 

 ing abruptly downwards in front. 



Movable cheek moderately convex, more than half as wide 

 as long, with regularly curving outer margin and thick- 



