1881.] NATURAL SCIENCES OF PHILADELPHIA. 247 



1S49. PI. megastylus McCoj'. Ann. and Mag. Nat. Hist. (ser. li), p. 248. Mount. 



limest. Bolland, Eng. 

 18.36. PI. mycrostylus Phillips. Geol. of Yorkshire, p. 204 ; Austin, 1842, Ann. and 



Mag. Nat. Hist., x, p. 109. Mount, limest. Bolland, England. 

 1842. PI, mucronatus Austin. (Figured by Phillips as PI, laevis, Geol. Yorkshire, 



PI. 3, figs. 14, 15.) Ann. and Mag. Nat. Hist., x, p. 109, and xi, p. 199; 



also 1843, Mon. Rec. and Foss. Crin., p. 22, PI. 2, fig. 1, and PI. 5, fig. 2. 



Subcarboniferous. England. 

 1853. PI. MuUerianus De Kon. and Leh.f Recher. Crin. Carb. Belg., p. 171, PI. 5, 



figs. 4 a, b, c, d. Mount, limest. Tournay, Belgium. 

 1865. PI. niotensis Meek and AVorthen. Proc. Acad. Nat. Sci. Phila , p. 162; also 



Geol. Rep. 111., p. 513, PI. 20, fig. 3. Keokuk limest. Niota and Nauvoo, 111. 

 1858. PI. nodulosus Hall (not Goldfuss, 1833 = Si/mbathocrinus). Geol. Rep. Iowa, 



pt. ii, p. 541, Lower Burlington limest, Burlington, Iowa, 

 1858. PI. nodobrachiatus Hall (not Hall, 1861). Geol. Rep. Iowa, i, pt. ii, p. 542. 



Burlington limest. Burlington, Iowa, 

 Described from a j'oung specimen, probably of PI. americantis. 

 1858, PI. nucleiformis Hall. (Pleurocrinus.) Geol, Rep, Iowa, 1, pt. ii, p. 540, 



Lower Burlington limest. Burlington, Iowa. 

 1853. PL oUa De Kon. and Leh. (not PL olla Hall, 1861 = PL Halli Shum.), 



Recher. Crin. Cab, Belg., p. 172, PI. 5, fig, 5, Mount, limest, Tournay, 



Belgium. 

 1844. PL ornatus McCoy (not PL ornatus Goldfuss, 1833 = Hexaenniis). Carb. 



Fos=. Ireland, p. 176, PI. 25, fig. 1, D'Orbigny, Edwardsocrinas ornatus, 



1849, Prodr, i, p. 157 ; also Course Elem, ii, p, 145 ; PL ornatus De Kon, 



and Leh., 1853, Recher, Crin. Carb, Belg., p. 177, PI. 6, figs. 4 a, b, c ; 



Pictet, Edwardsocr. ornatus, 1857, Traite de Pal, iv, p. 330, PL 101, fig. 



15. Mount, limest. Ireland, and Tournay, Belg, 

 This is evidently a young Platycrinus, with the arms as yet in an immature 



or embryonic state, 



1860, PL ornigranules McChesney. Desc. New Pal. Foss., p. 5 ; also Chicago Acad. 



Sci., i, p. 3, PI, 5, fig. 8, Lower Burlington limest. Burlington, Iowa, 



1861, PL parvinodus Hall. Desc. New Sp. Crin., p. 17. Lower Burlington limest. 



Burlington, Iowa, 

 1865, PL parvulus Meek and Worthen, Proc. Acad. Nat. Sci. Phila,, p. 163 ; Geol, 



Rep, 111., V, p 555, PI. 20, fig. 7. Chester limest. Pope Co., 111. 

 1860. PL penicillus Meek and Worthen. Proc. Acad. Nat. Sci. Phila., p. 380 ; also 



Geol, Rep, 111., ii, p. 266, PI. 19, figs. 6 a, b, Warsaw limest. Hardin 



Co., 111. 

 1865. PL perasper Shumard. Catal. PaL Foss, N. A., p. 389, Lower Burlington 



limest, Burlington, Iowa. 

 Syn. PL nodobraohiatus Hall, 1861 (not Hall, 1858). Desc, New Sp, Crin., 



p. 17. 

 1839, PL pileatus Goldf. (Pleurocrinus.) Acta Nov. ac. Leop., xir, p. 343, PI. 31, 



fig. 7, a, b, c; Geinitz, Grundr. der Versteiner., PI. 23, fig. 7; McCoy, 1851, 



Brit. Pal, Foss,, Pt. ii, p, 119; De Kon, and Leh,, 1853, Rech. Crin, Carb, 



Belg., p, 175, PI, 6, figs, 3 a-e. Mount limest. England and Belg. 

 Syn. PL anthleontes Austin, 1842, Ann. and Mag. Nat. Hist., x, p. 69, and 



?i, p. 199; Mon. Rec. and Foss, Crin,, p. 27, PL 2, figs, 3 k-r. 



