158 Cincinnati Society of Nalnyal History. 



Remarks. — Dr. Gurley remarks that this species is doubt- 

 fully distinct from Glossograptus ciliatus, Emmons. The de- 

 scription of the latter species is as follows : " Straight linear 

 crenulations faintly developed and prolonged into ciliie, equal 

 in length to the width of the ligulate body ; cilice surrounding 

 the whole body or membrane. The axis is prolonged beyond 

 the membrane, forming the column or stem. Length one 

 inch." (Emmons, loc. cit., p. icS). 



2. — D. WHiTFiiCLDi, Hall, 1X59. 



vStipe simple, flat, gradually expanding from the base to 

 near the middle of its length, the upper part gradually nar- 

 rowing in the direction of the apex, rarely continuing of the 

 same width above the middle ; serratures shallow, angular ; 

 the upper margin of the denticle short and nearly rectangular 

 to the axis, the lower side twice as long as the upper, the tips 

 furnished with mucronate or short setiform extensions which 

 project in a line with the upper margin of the denticle. 

 vSerraturcs from 22 to 28 in one inch. Length one to one and 

 a half inches. (Paleont. of New York, vol. 3, 1.S59, p. 516). 



Locality. — Cincinnati. 



Remarks. — Dr. Gurley says the occurrence of this species at 

 Cincinnati is doubtful, as it, like the previous one, is a " sub- 

 Utica" form in New York. It is also possible, he thinks, that 

 both may be errors for (jiiactriiinnronatNS, Hall, a "Utica" 

 species. 



Genus 3. — Cli.m.vcogk.vptus, Hall, 1865. 



Polypary composed of two simple, monoprionidian stipes 

 united back to back, their dorsal walls coalescing to form a 

 median septum, in the center of which runs a solid axis, the 

 cellules so welded together that their mouths appear as if 

 sunk below the general surface of the polypary ; solid axis 

 ]irolonged beyond the di.stal extremity of the frond, and 

 usually beyond its proximal extremity as well. (Hall, Grap. 

 Quebec Group. Can. Organic Remains. Decade II, 1S67, p. 

 III. Nicholson, /oc. cit., 1S72, p. 117). 



Remarks. — Though originally described by Hall, the above 

 description is that given by Nicholson. It differs .somewhat 

 in terminology from Hall's description, but the characters are 

 the same. Two sj^ecies of the genus have generally been 



