io6 BOTANICAL GAZETTE [august 



26. Scott, D. H., Occurrence of a seedlike fructification in certain Paleozoic 

 Lycopods. Proc. Roy. Soc. Lond. 67:1901 (p. 309). 



27. , The present position of Paleozoic Botany. Prog. Rei Bot. 



1907:137-217. 



28. , Studies in Fossil Botany. 1:1908 (2d edit.); 2:1909. 



29. , Note. Proc. Roy. Soc. Lond. B. 88:1915 (p. 435). 



30. Scott, D. H., and Jeffrey, E. C, On fossils showing structure from the 

 base of the Waverly Shale of Kentucky. Phil. Trans. Roy. Soc. Lond. 

 B. 205:1914 (p. 354). 



31. Tansley, a. G., Reduction in descent. New Phytol. 1:1902 (p. 131). 



32. Thomas, A. P. W., The affinity of Tmesipteris with the Sphenophyllales. 

 Proc. Roy. Soc. Lond. 69:343-350. 1902. 



33. Watson, D. M. S., On Mesostrobus, a new genus of Lycopodiaceous cones 

 from the Lower Coal Measures. Ann. Botany 23:379-397. pi. 27. 

 figs. 1-6. 1909. 



34. White, David, Stratigraphic succession of the fossil floras of the Pottsville 

 Formation. 20th Ann. Rept. U.S. Geol. Survey. 1900 (p. 825). 



35. , Stratigraphy and Paleontology of the Upper Carboniferous Rocks 



of the Kansas Section. Bull. no. 211, U.S. Geol. Survey. 1903 (p. 105). 



36. White, I. C, Rept. Prog. Second Geol. Surv. Pennsylvania, Q. 1878 

 (pp. 51, 54)- 



37. Williamson, W. C, Organization of the fossil plants of the Coal Measures. 

 III. PhU. Trans. Roy. Soc. Lond. B. 162:1872. 



38. , Same. IX. Phil. Trans. Roy. Soc. Lond. B. 184:1893 



(p. 27. pi. 9. fig. 27). 



EXPLANATION OF PLATES IX-XI 



PLATE IX 



Fig. I. — Cantheliophorus linearifolius (Lesq.); Allegheny Formation, 

 Pittston, Pa. (type in Lacoe Coll. U.S.N.M. no. 16069). 



Fig. 2. — Same; X2. 



Fig. 3 — C. grandis, n.sp.; Pottsville Formation, Holmes, W.Va. (collec- 

 tion Md. Geol. Survey). 



Fig. 4. — C. riparius (Nath.) ; Lower Carboniferous, Spitzbergen (Nathorst: 

 Nachtr. Pal. Flora Spitzbergens 1914. pi. 13. fig. 18). 



Fig. 5. — C. cultriformis (Lesq.); Allegheny Formation, Cannelton, Pa. 

 (type, Lacoe Coll. U.S.N.M. no. 16087) (Lesq. Coal Flora. III. 1884. 

 pi. 108. fig. 2). 



Fig. 6. — Same; X2. 



Fig. 7. — Another specimen from same locality (U.S.N.M. no. 16088). 



Figs. 8-10. — C. linearifolius (Lesq.); Allegheny Formation, Swallow Falls, 

 Md.; fig. 9 with a part of sporangium in place (Coll. Md. Geol. Survey). 



Figs, ii, 12. — C. subulatus, n.sp.; Allegheny Formation, Lansing, Kansas 

 (Lacoe Coll. U.S.N.M. nos. 16095, 16096). 



