TROOST *S CRINOIDS OF TENNESSEE E. WOOD. 



15 



The following is the original description by Troost : 



They differ principally from the P. pyriformis in having the ambulacra very short — 

 their diameter in proportion larger. 



Sequachie Valley and Sparta, Tennessee; Mount Sano, Alabama. 



In reference to Troost's specimen Doctor Hambach says: 



This species is synonymous with the one designated by Doctor Troost as tennesseex, 

 nom, nud. The description of Troost was never published. 



Cat. No. 33072, U.S.N.M. 



PENTREMITES FLOREALIS Say. 



Plate 3, fig. 1. 



Encrinites fiorealis Von Schlotheim, Petrefactenkunde, II, 1820, p. 38. 



Pentremites fiorealis Say, Journ. Acad. Nat. Sci. Phila. (1), IV, 1825, p. 295. — Sow- 

 erby, Zool. Journ., II, No. 7, 1825, p. 314, pi. an, fig. 2. — Goldeuss, Petrefacta 

 Germaniae, Pt. 1, 1826, p. 181, pi. l, figs. 2a-c. — Troost, Trans. Geol. Soc. 

 Pennsylvania, I, Pt. 2, 1835, p. 229, pi. x, fig. 3; Proc. Amer. Assoc. Adv. 

 Sci., II (read 1849), 1850, p. 60 (catalogue name). — Owen and Shumard, 

 Geol. Rep. Wisconsin, Iowa and Minnesota, 1852, p. 592. — Shumard, Marcy's 

 Expl. Red Riv. Louisiana, 1854, p. 174. — Dujardin and Hupe, Hist. Nat. 

 Zooph. Ech., 1862, p. 90.— Harris, Bull. Amer. Pal., I, 1896, p. 353.— Ham- 

 bach, Trans. Acad. Sci. St. Louis, XIII, 1903, p. 37, text fig. 12c. 



Pentremites fiorealis var. elongatus Troost, Proc. Amer. Ass. Adv. Sci., II (read 

 1849), 1850, p. 60 (catalogue name). 



Pentatrematites fiorealis Roemer, Archiv. f. Naturg., Jahrg. XVII, I, 1851, p. 

 353, pi. iv, figs. 1-4; pi. v, fig. 8. 



Pentremites symmetricus Hall, Rep. Geol. Surv. Iowa, I, Pt. 2, 1858, p. 694, pi. 

 xxv, fig. 14. 



Pentatrematites fiorealis Bronn, Klassen and Ordn. Their-Reichs., II, 1860, pi. 

 xxiii, figs. la-e. 



Pentremites godoni Shumard (in part), Trans. Acad. Sci. St. Louis, II, 1866, 



p. 384 (catalogue name). 

 Pentremites tennesseeae Shumard, Trans. Acad. Sci. St. Louis, II, 1866, p. 386 



(catalogue name). 



Pentremites godoni Weller (in part), Bull. No. 153, IT. S. Geol. Surv., 1898, p. 414. 

 Pentremites godoni var . fiorealis Bather, List Blastoidea, Brit. Mus. (Nat. Hist.), 



1899, p. 47 (catalogue name). 

 Pentremites altus Rowley, in Green's Contr. Indiana Pal., Pt. 8, 1901, p. 64, pi. 



xxiii, figs. 1, 2, 3. 



The original descriptions of Pentremites fiorealis and P. fiorealis 

 elongatus, by Troost, are as follows : 



Pentremites fiorealis. 



Elliptical — ambulacra long. — Pelvic plates short. They are sometimes very large, 

 the largest that I have seen is in my collection and is 2\ inches long. 



Not abundant, in the oolitic limestone near Sparta, Tennessee — very abundant at 

 Mount Sano, Alabama, and Russelville, Kentucky. 



Pentremites florialis elongatus, varietas. 



It is constantly proportionately more elongated than the P. fiorealis of any of the 

 other localities. 



Eastern declivity of Cumberland Mountains, Morgan County. And it character- 

 izes particularly the siliceous stratum in which the plates of the Melonites in Stewart 

 County, Tennessee, are found. 



