CONTRIBUTIONS TO PALEONTOLOGY. 155 



CONOCEPHALITES NASUTUS (n.s.)^ 



PLATE VII. FIGS. 3-9. 



A SMALL species with a somewhat broad head. Glabella short, 

 truncate conical, somewhat abruptly convex, the length equal 

 to the width at its base ; the posterior and middle furrows 

 oblique, and somewhat deeply marked ; the anterior one near the 

 front of the glabella, and often inconspicuous in small indivi- 

 duals. Occipital furrow somewhat wide and deep, straight in the 

 middle, making a slight curve backwards, and thence forward 

 at the extremities : occipital ring rather broad in the middle 

 and narrower at the sides. Dorsal furrow linear, well defined, 

 and extending with the same strength in front of the glabella, 

 which rises abruptly, while the cheeks are nearly flat. 



Fixed cheeks narrow, elevated in the direction of the palpebral 

 lobe : posterior limb narrow triangular ; frontal limb extended, 

 scarcely convex, and sloping downwards from the glabella for 

 two-thirds the length, where it is marked by a transverse fur- 

 row, beyond which it is contracted at the sides, a little convex 

 in the middle and attenuated towards the anterior margin. 



The movable cheek ( of this species ? ) is somewhat elongate, 

 gradually narrowing to the posterior extremity, which is produced 

 into a slightly curved spine of moderate length. The facial suture 

 reaches to the base about one-third the distance from the marginal 

 rim to the eye. 



This species is abundant in the gray and ferruginous sandstone of Kicka- 

 poo. It is pretty uniform in its characters, and easily recognized by the 

 pinched and nasute anterior portion of the frontal 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 truncato-conical glabella it resembles 

 G. ahumardi ; 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 G. diadematuH, G. shumardi and 

 G. perseus. 



CONOCEPHALITES OWENI(n.s.). 

 PLATE VIII. FIGS. 17 & 20. 



Glabella ovate-conical, the width at base equalling or a little 

 less than its length from the occipital furrow, regularly convex 

 and gently curving in front. Posterior glabellar furrows ex- 



