NicKLES AND BASsi.Ku.] CATALOGITK OF GENERA AND SPECIES. 427 



Thallostigmii himellata Hall. Soo Fistuliponi i lamoUata (Hall). 

 Thallostignia longimacula Hall. Sec Fistulipora 'i loiioiinacula (Hall). 

 Thallostigina inicropora Hall. See Lioclcma microporuni (Hall). 

 Thallostignia inultaculeata Hall. See Liocleraa multaculoatuin (Hall). 

 Thallostignia plana Hall. See Pinacotrypa plana (Hall). 

 Thallostignia scrobiculata Hall. See Fistulipora 'i scrohiculiita (Hall). 

 Tliallostigma segregata Hall. See Lioclenia segregatuni (Hall). 

 Thallostignia sermlata Hall. See Pinacotrypa serrulata (Hall). 

 Thallostignia sparsipora Hall, See Prismopora sparsipora (Hall). 

 Thallostignia sphcroidea Hall. See Lioclcma ? spheroideum (Hall). 

 Thallostignia striata Hall. See Lioclenia niinutum (Roniinger). 

 Thallostignia subtilis Hall. See Lioclcma subtile (Hall). 

 Thallostignia triangularis Hall. See Fistulipora ? triangularis (Hall). 

 Thallostignia umbilicata Hall. See Fistulipora ? umbilicata (Hall). 

 Thallostignia variapora Hall. See Pinacotrypa variapora (Hall). 



Thaninicella ascuta Simpson. 



1897. Thamnicella ascuta Hall. Simpson, Fourteenth Aim. Rep. State Geologist 

 New York for the year 1894, pi. ix, 6-8. 

 Obs. Simpson ascribes this species to Hall, ))ut we are imable to find it in 

 any of the latter' s works. 



Thamnicella Cisseis Simpson. See Drymotrypa cisseis (Hall). 

 Thaninicella Nysa Simpson. See Thamniscus nj^sa Hall. 



THAMNISCUS King. Genotype: Ceratophytes dubius Schlotheim. 



1849. Thamniscus. King, Ann. ]\Iag. Nat. Hist. , ser. 2, II, p. 389. 



1850. Thamniscus. King, Perm. Foss. England, p. 44. 

 1860. Thamniscus. Eichwald, Letha>a Rossica, I, p. 386. 



1875. Thamniscus. Etheridge, Jun., Proc. Geol. Assoc, IV, p. 120. 



1882. Thamniscus. Shrubsole, Quar. Jour. Geol. Soc. London, XXXVIII, j). .343. 



1885. Thamniscus. Vine, Proc. Yorkshire Geol. Polyt. Soc, IX, p. 89. 



1885. Thamniscus. Waagen and Pichl, Pal. Indica, Ser. XIII, j). 807. 



1886. Thamniscus. Ulrich, Contr. American Pal.,I, p. 5. 



1887. Thamniscus. Hall and Simpson, Pal. New York, VI, p. xxii. 



1889. Thamniscus. Miller, North American Geol. Pal., p. 327. 



1890. Thamniscus. Ulrich, Geol. Sur. Illinois, VIII, pp. 397, 606. 



1896. Thamniscus. Ulrich, Zittel's Textb. Pal. (Eng. ed.), p. 283. 



1897. Tlianmiscus. Simpson, Fourteenth Ann. Rep. State Geologist New York 



for the year 1894, p. 524. 



Thamniscus ? Cisseis Hall. See Drymotrypa cisseis (Hall). 



Thamniscus dichotomus (Hall). 



1852. Hornera ? dichotoma. Hall, Pal. New York, II, p. 163, pi. xlC, 3((-^?. 



1889. - Subretepora dichotoma. Miller, North American Geol. Pal., p. 326. 



1890. Thamniscus dichotoma. Ulrich, Geol. Sur. Illinois, VIII, i>. (507. 

 Niagara: Lockport and Rochester, New York. 



Thamniscus divaricans Ulrich. 



1890. Thamniscus divaricans. Ulrich, Geol. Sur. Illinois, VIII, p. (iOS, j)l. Ixii, 

 6-6r. 

 Keokuk: Kings Mountain, Kentucky. 



