569 



Obthop. 



well preserved, but small; 6&, back mandible tooth, left jaw, 

 ditto ; 6g, middle mandible, ditto. All three found together in 

 a spec, of roof shale of coal 5, Bloomington, 111. — XIII, 



Orthopleurodus convexus, St. John and Worthen, Geo. 



0. novome/ I cartas -SiX 



41 



OrthoplearodcLS (oitvexiis, 



- Geo/J/l. Vol, vn,piaU /3 , 



Sur., Ill , vol. 7, 1883, page 193, plate 13, figs. 4a, 5, c. upper 

 back tooth of the right jaw of the fish, from above and sidewise, 

 and section ; 5 «5, 5, lower back tooth. Found by Worthen in 

 the Barren measures (above the Mahoning sandstone), at Mor- 

 gantown, W. Va., and certain to be found in Pennsylvania. 

 XF. 



Orthopleurodus novo-mexicanus. {Figures with those 

 of O, convexus.) St. John and Worthen, Geo. Sur., 111., vol. 7, 

 1883, page 195, plate 13, figs, la, lower back tooth of the fish 

 seen from above ; 2a, S, similar views of ihe same form ; 3a, J, 

 (?, upper back tooth; seen from above; inner margin; profile 

 of frontside edge. Santa Fe ; Lower carhoniferous. X? 

 XIII? 



Ostracoids. {See Crustaceans. ) — K, 242, 243. — Undeter- 

 mined species in the coal measures of Fayette, Westmoreland, 

 etc., K3, 310. — Abundant in the poor limestone beds of the 

 Great Limestone {Monongahela series) near Manor station, P, 

 R. R. K3, 307; K2, 346.— Abound { Est her ia^ etc) in roof shales 

 of Washington lower andnpper limestones.) with fish teeth and 

 scales. K3, 300.— -Abound ( Cypris, etc.) in the still higher lime- 

 stones of the Upper Barren Coal Measures ; in some of them 

 quite unaccompanied by other fossil forms. K3, 306. — XV 

 XVI XVII 



