LYCOPODIALES— ECrSIGILLAEIiE— SIGILLAEIA. 241 



trace near the center of a tviang-ular-obovate, raised placque, or possibly a 

 ring. The figure of the species is quite unsatisfactory, but we may infer 

 from its details that it represents a species belonging to the SiibsigillaricB. 

 It is, however, impossible to identify the character of the leaf scar, as given 

 in both the figure and the description of S. fissa, with those seen in the 

 type of Lepido]oliloios sigillarioides. Hence, notwithstanding the unpleasant 

 features of the binomial, there seems, in compliance with the laws of nomen- 

 clature, no alternative to the preservation of the earlier specific appellation, 

 and the consequent designation of the species as SigiUaria sigillarioides. 



Localities. — Near Clinton, Henry County, Missouri. The portion 

 figured by Lesquereux is in the collection of Dr. J. H. Britts, of Clinton. 

 Fragments of the same specimen are Nos. 6659 and 6660 of the Lacoe 

 collection in the United States National Museum. Hobbs's coal mine, 

 U. S. Nat. Mus., 6173. 



SiGiLLAEiA TESSELLATA (Steinh.) Brongn. 



• 



1818. Phytolithiis tessellatus Steinhauer, Traus. Amer. Phil. Soc, vol. i, p. 295, pi. vii, 

 fig. 2. 



1835. Phytolitlms tessellatus Steiah., Holland, Hist. Descr. Foss. Fuel, p. 94, text fig. 5. 

 1820. An Palmacites variolatus Schlotheim, Petrefactenkunde, p. 393, pi. xv, fig. 3a, 6? 

 1828. SigiUaria tessellata (Steinh.) Brongniart, Prodrome, p. 65. 



1836. SigiUaria tessellata (Steinh.) Brongniart, Hist. v(^g. foss., vol. i, p. 436, pi. clxii, 



figs. 1-4 ; pi. clvi, fig. 1. 

 1850. SigiUaria tessellata (Steinh.) Brongn., Mantell, Pict. Atl., p. 27, pi. v, fig. 8. 

 1855. SigiUaria tessellata (Steiuh.) Brongn., Geinitz, Verst. Steinkohl. Sachseu, p. 44, 



pi. v, figs. 6-8. 

 1857. SigiUaria tessellata (Steinh.) Brongu., Goldenberg, Fl. Foss. Sarrep., vol. ii, p. 29, 



figs. 14, 15. 

 1879. SigiUaria tessellata (Steinh.) Brongn., Schimper, Traite, vol. i, p. 8 (pars), 



pi. Ixviii, fig. 2 (figs. 1,3?). 



1875. SigiUaria tessellata (Steinh.) Brongn., W. H. Bailey, Figs. Char. Brit. Foss., 



pi. xxxiv, figs. 5, 5b. 



1876. SigiUaria tessellata (Steinh.) Brongn., O, Feistmantel, Yerst. bohm. Kohlen-Abl., 



vol. iii, p. 7 (pi. i, figs. 1,2?). 



1878. SigiUaria tessellata (Steinh.) Brongn., Zeiller, Veg. foss. terr. houill., p. 132, 



pi. clxxiii, fig. 2. 



1879. SigUlaria tessellata (Steinh.) Brongn., Lesquereux, Coal Flora, Atlas, p. 14, 



pi. Ixxii, fig. 2 (3?, 4?); text, vol. ii (1880), p. 481 (pars). 

 1881. SigiUaria tessellata (Steinh.) Brongn., Weiss, Aus d. Fl. d. Steink., p. 4, pi. i, 

 fig. 4. 



MON XXXVII 16 



