424 PROCEEDINGS OF THE IXDIAXA ACADEMY OF SCIENCE. 



bj^ a faint line from microp3'le to base; wings of uniform width of about 1 

 mm., slightly emarginate. 



The uniform width of the mngs and more rounded outline distinguish 

 this species from C. cordalum, C. irregulare and C. obtusum. It is smaller 

 than C. acutum and the ^vangs are not narrowed and extended as in that 

 species. 



Locality: Fire elaj- under the Upper Block Coal, Asherville. 



Cardiocarpon biscuspidatum (Sternb.) Newb. 

 Plate VII, figs. 4 and 6; PI. VIII, fig. 3. 

 1873. Cardiocarpon bicuspidatum Sternb. Xewberry, Rep. Geol. Surv. Ohio, 

 Vol. I, part 11. p. 373, pi. 43, figs. 9, 9a. 

 The form shoA\Ti in pi. VII, fig. 6 seems to agree closelj^ with the Ohio 

 forms described by Xewberry. The specimen showm in pi. VII, fig. 4 is some- 

 what smaller and the margin is narrower than in the Ohio forms. Nuclei 

 of forms doubtfully referred to this species are shown in pi. VI, figs. 8a, 8b. 

 Localities: Cincinnati, BoAvling Green and Roadman School. 



Cardicarpon cf. circulare Lx. 

 Plate VII, fig. 5. 

 Tile jxjor state of preservation of this specimen maki-s its determination 

 a matter of uncertainty. It appears to be closely related to the form 

 described by Lesquereux^' as C. circulare. The Avings are slightly more 

 narrowed at the base and less truncate at the apex than in C. circulare. 

 Locality: Bowling Green. 



(.'ardiocarpon Nuhcirculare n. sp. 

 Plate VIII, fig. 5. 



Fruit nearly round; about 1.1 centimeters wide, 1.2 centimeters long; 

 nucleus round, 9 mm. in diameter, acutely pointed above, slightly truncated 

 at the base; wings about 1 mm. in width at the base and a little greater at 

 the top; wings rounded on the side next the micropyle, extended, pointed and 

 close together above. 



This form is related to C. bicu.spidnlum but is smaller and more rounded. 

 It also differs from that species in that the nucleus and wings are more 

 shari)ly pointed and prolonged aboAc. 



Locality: Roadman School. 



Cardiocarpon .sp. 

 Plate V, Fig. 8. 

 Fruit OA-al, someA\iiat truncate aboAc, about 2.5 centimeters in width 

 and 3.5 centimeters in length; Avings a])()ut 8 mm. in Avidth, slightly emargin- 



2' Coal Flora. Vol. HI. p. 812. pi. CX, fig. 10. 



