ANNELIDA. 57 



VERMES 



Class ANNELIDA 



Subclass Chaetopoda 



Order Polychaeta 



Suborder Tubicola 



Genus Spirorbis Lamarck 



Spirorbis omphalitides (Goldfuss) 



Plate 6, figures 9 and 10. 



1833. Serpula omphalodes Goldfuss, Petref. Germ., vol. 1, p. 225, pi. 68, fig. 3. 

 1874. Spirorbis omphalodes Nicholson, Rep. Paleont. Prov. Ont., p. 121, fig. 54a. 

 1891. Spirorbis omphalodes Whiteaves, Cont. to Canadian Pal. I, pt. 3, p. 209, pi. 28, 



figs. 3, 4, 4a, 5 and 5a. 

 1911. Spirorbis omphalodes Cleland, Wisconsin Geol. Nat. Hist. Surv., Bull. 21, p. 46, 



pi. 4, figs. 3, 3a. 

 1913. Spirorbis omphalodes Hinde Zittel's Textbook of Paleontology (Engl, ed.), 



vol. 1, 2nded., fig. 219. 

 Whiteaves 1 description — "In small specimens the outer volution is rounded and 

 somewhat depressed and the umbilicus usually, though not always, comparatively wide. 

 In large individuals the outer volution is elevated and subangular and the umbilicus 

 narrow. The surface is usually smooth or nearly so, but in some specimens which 

 seem to be nearly intermediate between this species and the next, the umbilical margin 

 is seen to be distinctly plicated, when examined under a lens." 



Remarks — Specimens are common in the Snyder Creek shale, but they are usually 

 in poor condition. The sub-angular condition of the outer volution is not apparent. 



ECHINODERMATA 



Class BLASTOIDEA 



Order Eublastoidea 



Family Nucleocrinidae 

 Genus Nucleocrinus Conrad 



Nucleocrinus verneuili (Troost) 



Plate 8, figures 3 and 4. 



1841. Pentremites verneuili Troost, 6th Report Geol. State Tenn., p. 14. 

 1849. Pentremites verneuilii D'Orb., Prod. Pal. Strat, I, p. 102. 



1849. Olivanites verneuili Troost, Am. Jour. Sci., VIII, p. 419. 



1850. Olivanites verneuilii Troost, Proc. Am. Assoc. Adv. Sci., for 1849, p. 62. 



1851. Elaeacrinus verneuilii Roemer, Archiv f. Naturgesch, Jahrg. XVII, Bd. i, p. 

 379, pi. 8, fig. 1, a-d. 



1857. Olivanites verneuilii Lyon in Owen's 3rd Report Geol. Survey Kentucky, pp. 



487-492, t. 5, f. 1, a-e. 

 1857, Pentremites verneuilii Shumard, Trans. St. Louis Acad. Sci., I, p. 247, 



