246 PROCEEDINGS OF THK ACADEMY OF [1881. 



1853. PI. granosus De Koninck and Lehon (Pleurocrinus). Rccher. Crin. Carb. 



Bulg., p. 183, PI. t), figs. 6 a-i. Mount, liinest. Tournay, Belgium. 

 1821. PI. granulatas Miller. Hist. Crinoidea, p. 81, PI. 4, fig.«. 1-3; .Scblotheim, 



1822, Nacbtr. zur Petref., i, p. 86; Ibid, ii, p. 97, PI. 26, figs. 3 a, b, c; 

 Blainville, 1830, Diet, des Sci. Nat., Ix, p 243; Agassiz, 1835, Mem. de la 

 Soc. des Sci. de Neuchatel, i, p. 197; De Koninck, 1842, Desc. Anim. Foss. 

 Carb. de Belg., p. 43, PI. F, figs. 2 a, b; Portlock, 1843, Geol. of London- 

 derry, p. 350, PI. 16, fig. 4; Austin, 1843, Mon. Rec. and Foss. Crin., p. 33, 

 PI. 3, figs. 2 i-o; McCoy, 1844, Carb. Foss. Ireland, p. 176; De Koninck and 

 Lehon, 1853, Rccherch. Crin. Carb. Belg., p. 179, PI. 6, figs. 5 a-b. Mount, 

 limest. England, Ireland and Belgium. 



1863. PI. graphicus Hall. 17ch Rep. N. Y. St. Cab., p. 55; also 1875, Geol. Surv. 

 Ohio, Pal. ii, p. 166, PI. 11, fig. 2. Waverly Gr. Richfield, Ohio. 



1865. PI. Halli Shumard (PleurocrinusJ. Catal. Pal. Foss. North America, p. 388 

 (Trans. Acad. Sci. St. Louis, vol. ii). Upper Burlington limest. Burling- 

 ton, Iowa. 

 This species was at first described and figured by Hall as PL planus Ow. and 

 Sh., Geol. Rep. Iowa, i, pt. ii, p. 533, PI. 8, figs. 6 a, b. It resembles PL in- 

 COmptUS White, in form and lack of ornamentation, but the latter has six, 

 or exceptionally seven to eight arms to each ray, while PL Halli has twelve 

 or even sixteen arms to the ray. 

 Syn. PL olla Hall (not De Kon. and Lehon). Desc New Sp. Crin., p. 16. 



1873. PL Haydeni Meek. Hayden's U. S. Geol. Surv. for 1872, p. 469; also White, 

 Ann. Rep. U. S. Geol. Surv. Terr, for 1878, p. 122, PI. 33, fig. 7 a. Sub- 

 carboniferous. 



1865. PL hemisphericus Meek and Worthen (Pleurocrinus). Proc. Acad. Nat. 

 Sci. Phila., p. 162; also Geol. Rep. III., iii, p. 466, PI. 16, fig. 9, and vol. v, 

 p. 16, figs. 6 a, b, c. Keokuk limest. Crawfordsville, Ind. ; also Burlington 

 and Keokuk Transition beds at Burlington and Nauvoo. 



1863. PL incomptus White. Bost. Jour. Nat. Hist., vii, p. 503; also Meek and 

 AVorth., 1873, Geol. Rep. 111., v, p. 459, PI. .3, fig. 7. Upper Burlington 

 limest. Burlington, Iowa. 



1836. PL laciniatus Gilbertsou (Phillips). Geol. of Yorkshire, p. 204, PI. 3, fig. 18; 

 Austin, 1843, Ann. and Mag. Nat. Hist., x, p. 109, and Mon. Rec. and Foss. 

 Crin., p. 42, PI. 5, figs. 1 a-c; D'Orbigny, 1849, Prodr i, p. 156. Mount, 

 limest. BoUand, England. 



1821. PL leevis Miller.f Hist. Crinoidea, p. 74, PI. 1, fig. 1-9, and 13-18, and PI. 2, 

 figs. 1-4, and 52-56 (the other figures have been referred by De Koninik to 

 several other species). Scblotheim, 1822, Nachtr. zur Petref., i, p. 84; Ibid., 



1823, vol. ii, p. 94, PI. 25, figs. 4 a and 4 e; Goldfuss, 1833, Petref. Germ., i, 

 p. 188, PI. 58, fig?. 2 a-e; Blainville, 1834, Manuel de Actinocr., p. 262; 

 Agassiz, 1835, Mem. Soc. de Neuchatel, p. 197 ; Bronn, 1835, Leihsea Geogn., 

 i, p. 60; Milne-Edwards, 1836, Anim. s. vert, de Lamarck, ii, p. 665; De 

 Koninck, 1842, Desc. Anim. Carb. de Belgique, p. 41, PI. F, fig. 1 c and e 

 (the others excluded); Austin, 1843, Monog. Rec. and Foss. Crin., p. 8, PI. 1, 

 figs, la-n; McCoy, 1844, Syn. Carb. Foss. Ireland, p. 176; Pictet, 1846, 

 Traite de Paleont., iv, p. 200, PI. 9, fig. 18. Mountain limest. England, 

 Ireland and Belgium. 



1875. PLlodensis Hall. Geol. Surv. Ohio, Pal. ii, p. 168, PI. II, fig. 3. Waverly 

 Gr. Medina Co., Ohio. 



