276 PALEONTOLOGY OF OHIO. 



LiNGULA MELIE, Hall? 



Plate 14, fig. 3. 



Lingula melie, Hall (1864) ; 16tli Report of the Regents on the State Cab. Nat. Hist. 

 N. Y., 24; and (1867) Palseont. N. Y., IV., 14, pi. 1. figs. 3 and 4. 



Shell iiarrow-subovate or sub-elliptic, moderately convex, widest at or 

 a little in front of the middle, where the breadth equals about one-half 

 to two-thirds the length; lateral margins forming semi-oval or nearly 

 semi-elliptic curves, and rounding rather abruptly into the subtruncate 

 or rounded front; beaks obtuse, with a flattened, slightly raised, mesial 

 ridge extending and widening forward from them to the front. Surface 

 marked by fine concentric strise of growth. 



Length of a rather narrow specimen, 0.66 inch; breadth, 0.34 inch. 



The specimen represented by our figure is proportionally rather nar- 

 rower than a majority of those in the collection, and the mesial flattened 

 ridge is not represented tapering enough toward the beak from the front 

 in our figure. It should be narrower, even near the middle of the valve, 

 than the slope on either side. On some specimens, however, it seems to be 

 nearly obsolete, while oh others it is quite well defined, and rather dis- 

 tinctly flattened anteriorly, thus imparting a truncated outline to the 

 front. I am not sure that I have seen specimens of L. melie irom. the orig- 

 inal locality; but the form here described has been referred to that species 

 by the geologists of the Survey, and was sent to me with that name 

 attached. 



Locality and posMon : Cuyahoga shale, a part of the Waverly group of the Lower 

 Carboniferous, at Johnston, Trumbull county, Ohio. Prof. Hall's type specimens 

 came from Chagrin Falls, Ohio. 



LiNGULA ScoTiCA, Davidsoii ? 



Plate 14, fig. 9. 



Lingula Scotica, Davidson (1868) ; Monogr. Scottish Carb. Brach., pi. 5, figs. 36 and 37 ; 



British Carb. Brach., p. 207, pi. 48, figs. 27 and 28. 

 ff Lingula Scotica, var. Nebrascensis, Meek (1872) ; Palaeont. E. Nebraska, p. 158, pi. 8, 



figs. 3a, b. 



Shell ovoid-subtrigonal, compressed ; lateral margins converging with 

 slightly convex outlines from near the front to the beaks, at an angle of 

 about 120°, and rounding to the rounded or faintly subtruncated front ; 



