MEDINAN, NIAGARAN, AND CHESTER FOSSILS 
119 
into the pit at the attachment area is more abrupt; but this may 
be due to inferior preservation of the Kentucky type. In the 
Kentucky type these attachment areas vary from 13 to 15 mm. 
in their distances apart as an average, and considering this 
moderately greater distance apart, the meshes of the reticulated 
surface between appear relatively coarser. In fact, this differ- 
ence in the coarseness of the intervening meshes appears sufficient 
to warrant the use of a distinguishing name for the Illinois speci- 
men, which therefore is called variety illinoisensis of the Kentucky 
type of Dictyophlois reticulata. 
BIBLIOGRAPHIC REFERENCES 
Stigmaria stellata Eichwald 
Eichwald: Bull. Acad. Imp. Sci. St. Petersburg, vol. 7, 1840, p. 90. Russia: 
Prikscha. — Upper Carboniferous. 
Eichwald: Lethaea Rossica, Stuttgart, vol. 1, i, 1860, p. 206, pi. xv, fig. 2. 
Renault: Cours Bot. Foss., vol. 1, 1881, p. 155. 
Stigmaria ficoides stellata Goppert 
Goppert: Gatt. Foss. Pflanzen, pts. 1 and 2, 1841, p. 64, pi. x, fig. 12. Silesia: 
Landshut. — Upper Carboniferous (Jiingste Grauwacke). 
Goppert: Naturk. Verb. Holl. Maatsch. Wetensch., Haarlem, vol. 4, 1848, p. 78, 
pi. xii, figs, xxi, xxii. 
Schimper: In Koechlin-Schlumberger: Mem. Soc. Sci. Nat. Strasbourg, vol. 
5, 1862, p. 326. 
Dawson: Canadian Nat., vol. 8, 1863, p. 436 (6). 
Goppert: Palaeontographica, vol. 12, (Perm. Form.) 1864, p. 198. 
Lesquereux: Second Geol. Surv., Pa., Rept. Progr. P (Coal FL, vol. 2), 1880, p. 
515, pi. Ixxiv, fig. 4. 
Lesquereux: 13tli Ann. Rep. Indiana Geol. Surv., Indianapolis, 1883 (1884), 
p. 96, pi. xix, fig. 4. 
Lesley: Rept. Geol. Surv. Pa., P4, (Diet. Foss. Pa. vol. 3), 1890, p. 1074, one text 
fig. 
Lepidodendron Volkmannianum Sternberg 
Sternberg: Flora der Vorwelt, 1, (Tentamen), 1825, p. x, pi. liii, figs. 3a-c. 
Silesia: Zaborze; Waldenburg — Upper Carboniferous. 
Unger: Gen. et Spec. PI. Foss., 1850, p. 256. 
Quenstedt: Handb, Petrefactenk., Tubingen, 2nd ed., 1867, p. 871, pi. Ixxxi, 
fig. 22; 3d ed. 1885, p, 1121, pi. xciv, fig. 17. 
Schimper: Pal. Veg., vol. 2, 1870, p. 23. 
Stur: Abh. k. k. Geol. Reichsanst., vol. 8, no. 2, (Culm. FL, pt. 2), 1877, p. 286 
(392), pi. xviii, fig. 4: pi. xxiii, figs. 2-5. 
Feistmantel: Palaeontographica, Suppl. 3, no. 3 (FI. Austr.), 1879, p. 152, pi. 
xxiii, fig. 1. 
