296 PROCEEDINGS OP THE ACADEMY OF [1881. 



*1860, Melocr. laevis Roemer (not (}<)ldf.) — Cytocrinua laevis. Silur. Fauna, West 

 Teun., i>. 5fi, PI. iv, figs. 2 a, b. Ni;ii^ari\ gr. We.<t. Tennessee. 



*1859. Melocr. nobilissimus Uall. (Mariacr. nobilissimus) Paloont. N. York, iii, 

 p. 105, PI 2, ligs. 1-4, and PI. 2 A, fig. 1. Pentamerus limcst. Litchfield, 

 Herkimer Co., N. Y. 



1861. Melocr. nodosus Hall. Geol. Surv. Wis. (Rep. of Progress), p. 19. Tevonian. 



Iowa City. 

 1865. Melocr. obpyramidalis Winchell and Marcy. (Actinocr. obpyramidalis) 



Mem. Bost. Soc. Nat. Hist., vol. i, p. 87, PI. 2, fig. 4. Niagara gr. Near 



Chicago, 111. Miller, 1881, Cincin. Soc. Nat. Hist. (July No.). 

 This species was described from an imperfect cast. Hall takes it to be a 



synonym of Meloor. Verneuili Troost. 

 *1841. Melocr. pachydactylus Conrad. (Astrocrinites pachydactylus) Ann. Rep. 



Paleont. N. York, p. 34 ; Mather, 1843, Geol. Rep. N.York, p. 246; Hall, 



1859, Mariacr. pachydactylus, Paleont. N. York, iii, p. 107, PI. 3, figs. 



1-4 A. Lower Ilelderberg gr. Schoharie, N. Y. 

 Si/)i. Actinocr. polydactylus (1837) Bonny (not Miller). (Schenectady 



Reflector.) 

 *1859. Melocr. paucidactylus Hall. Paleont. N. York, iii, p. 109, PI. 3, fig. 5. 



Lower Ilelderberg gr. Herkimer Co., N. York. 

 1860. (?) Melocr. Pratteni McChesney. (Forbesiocr. Pratteni) Desc. New. Pal. 



Foss., p. 29 ; 1867, Melocr. Pratteni Chicago, Acad. Sci., p. 22, PI. 5, fig. 4. 



(Geological position and locality unknown, and described from imperfect 



specimen?.) 

 1838. Melocr. pyramidalis Goldfuss. Nova Acta Ac Leop., xix, i, p. 339, PI. 31, fig. 



1 ; D'Orbigny, 1850, Prodr., i, p. 103 ; Schultze, 1867, Mon. Echin. Eifel 



Kalk, p. 66, PI. 4, fig. 5. Devonian. Eifel, Germ. 

 S)jn. Melocr. fornicatus Goldfuss. Ibid., p. 340, PI. 31, fig. 2. 

 (?) 1878. Melocr. rigidus Angelin. Iconogr. Crin. Suec, p. 20, PI. 21, fig. 3. Upper 



Silur. Gothland, Sweden. 

 (This is an entirely diflferent form, and probably belongs to a dift'erent family.) 

 1878. Melocr. spectabilis Angelin. Iconogr. Crin. Suec, p. 20, PI. 21, figs. 1-2. 



Upper Silur. Gothland, Sweden. 



1862. Melocr. stellaris Roemer. (Ctenocr. stellaris) Yerhandl. Naturh. Verein. f. 



Rheinl., ix, p. 283, PI. 2, figs. 2 a, b, c ; also Schultze, 1867, Mon. Echin. 



Eifel Kalk, p. 65, PI. 4, fig. 3. Devonian. Eifel, Germ. 

 1840. Melocr. typus Bronn. (Ctenocr. typus) Jahrb. f. Mineralogie, p. 542, PI. 8 B ; 



also D'Orbigny, 1860, Prodr., i, p. 103, and F. Roemer, 1844, Rhein. Ueber- 



gangsgeb., p. 60, PI. 1, fig. 1. Grauwacke, near Coblentz, Germ. Probably 



identical with Melocr. decadactylus Goldf. 

 1864. (?) Melocr. Verneuili Troost. (Actinocr. Verneuili) List of Crin. Tenn., 



I860; 1868, Hall, 20th Rep. N. York St. Cab. Nat. Hist., p. 327, PI. 10, fig. 



5 (Advance Sheets, 1864). Niagara gr. Decatur Co., Tenn., and Racine, 



Wis. 

 This species is only known from natural casts, hence an accurate comparison is 



impossible, but from all appearances it is identical with Melocr. (Cytocr.) 



laevis Roemer. 

 1838. Melocr. verrucosus Goldf. Nova Acta Ac Leop. xix, i, PI. 31, fig. 3 ; also 



Schultze, 1867, Mon. Echin. Eifel Kalk, p. 65, PI. 4, fig. 4. Devonian. Eifel, 



Geim. 



