SHUMARD— CATALOGUE OF PALEOZOIC FOSSILS. 375 



GRANATOCRINUS,! Troost, 1850. List Crin. Tenn., Proc. Amcr. 

 Assoc. Camb. Meet., p. 02. Pentremites of most authors. 



cidariformis, v. G. granulatus. 



comutus — Pentremites cornutus, Meek & Worthen, 1861. Proc. 

 Acad. Nat. Sci. Phil., p. 141.— St. L.— Brown Co., Illinois. 



curtus — Pentremites curtus, Shumard, 1855. 2d Rep. Geol. Mis- 

 souri, pt. 2, p. 187, pi. B., fig. 3. — Elccacrlnus curtus, Shu- 

 mard, 1862. Trans. Acad. Sci. St. Louis, vol. ii., p. 112. — 

 Arch. — Fenton, St. Louis Co., Missouri. 



granulatus — Granatocrinus cidariformis, Troost, 1850. Cat. Crin. 

 Tenn., Proc. Amer. Assoc. Camb. Meet., p. 62. — Pent at re- 

 matites granulatus, Roemer, 1852. Monog. Blast., p. 43, 

 pi. 3, fig. 13. — Kas. — Allen Co., Kentucky; near Huntsville, 

 Alabama; Tennessee. 



granulosus — Pentremites ( Granatocrinus?) granulosus, Meek & 

 Worthen, 1865. Proc. Ac. Nat. Sci. Phil., p. 165. — Arch. 

 — Near Warsaw, Illinois. 



melo — Pentremites melo, Owen & Shumard, 1850. Jour. Acad. 

 Nat. Sci. Phil., 2d ser., vol. i., p. 65, pi. 7, fig. 14.— 1852. 

 Geol. Iowa, Wise. & Minnes., p. 592, tab. v. A., fig. 14. — 

 Elccacrinus melo, Shumard, 1862. Tr. Ac. Sci. St. Louis, 

 vol. ii., p. 112. — Enc. — Burlington, Iowa ; Hannibal and 

 St. Louis Co., Missouri ; near Monmouth, Illinois. 

 var. projectus — Pentremites melo, var. projectus, Meek & Wor- 

 then, 1861. Proc. Acad. Nat. Sci. Phil., p. 142.— Enc— 

 Burlington, Iowa. 



MissouriensisJ — Pentremites Raimeri (pars), Shumard, 1855. Geol. 

 Rep. Missouri, pt. 2, pi. B., fig. b. c. d. — Chem. — Provi- 

 dence, Boone Co., Missouri. 

 Norwoodi — Pentremites Noriooodi, Owen & Shumard, 1850. Jour. 

 Acad. Nat. Sci. Phil., 2d ser., vol. ii., p. 64, pi. 7, fig. 13.— 

 1852. Geol. Surv. Iowa, Wis. & Minnes., p. 591, pi. 5 A., 

 fig. 13. — Elceacrinus Norwoodi, Shumard. Tr. Acad. Sci. 

 St. Louis, vol. ii., p. 112. — Enc. — Burlington, Iowa; near 

 Monmouth, Illinois; Hannibal, and St. Louis Co., Missouri. 



t Adopting the suggestion of Prof. Hall, 1 here include under Granato- 

 crinus (a Genus proposed by the late Dr. Troost) a number of elliptical 

 Blastoideans which have hitherto been grouped with Pentremites and Eloz- 

 acrinus. The Granatocrinus {Pentatrematites) granulatus, Rcemer= Grana- 

 tocrinus cidariformis, Troost, may be regarded as the type of the Genus, 

 and for the present it may be extended so as to include such species as 

 Pentremites melo and P. Norwoodi, Owen and Shumard, and allied forms, 

 though it may become necessary after a while to remove these from Gra- 

 natocrinus and group them in a separate subsection under another name. 

 They difier from Elce.acrinus in having elongate radial plates, extending, 

 in some instances, almost the entire length of the pseudambulacral fields, 

 while the interradials are in most instances extremely short. The struc- 

 ture of the summit is also quite different; the anal field is not flattened 

 and conspicuously wider than the others, and it is not provided with a 

 supplementary lanceolate piece as we find in Elmacrinus proper. The 

 Granatocrini appear first in the Chemung Group and extend as high up in 

 the series as the Kaskaskia Limestone, while the Elveacrini commence in 

 the Upper Silurian and do not range above the Devonian Age. 



t This species differs from P. Roemeri in being more regularly globose ; 

 the pseudambulacral fields are wider, the base smaller and concave, in- 

 stead of convex, as we find in P. Roemeri. 



