BIBLIOGEAPHIC LIST OF GENERA AND SPECIES. 801 



Merocrinus typus Walcott. 



Merocrinus typus Walcott, 35th Rep. New York Stele Mus. Nat. Hist., 1884, p. 



209, pi. 17, fig. 5 (adv. sheets, 1883). 

 Trenton: Trenton Falls, New York; West Covington, Kentucky. 



MESOMPHALUS Ulrich and Bassler. Genotype: M. hartleyi Ulrich and Bassler. 

 Mesomphalus Ulrich and Bassler, Maryland Geol. Surv., Low. Dev., 1913, p. 522. 



Mesomphalus hartleyi Ulrich and Bassler. 



Mesomphalus hartleyi Ulrich and Bassler, Maryland Geol. Surv., Low. Dev., 1913, 



p. 523, pi. 95, figs. 22-24; pi. 96, figs. 1-3. 

 Helderbergian (Keyser): Cumberland, Maryland; Keyser, West Virginia. 

 Cotypcs.— Cat. No. 53304, U.S.N.M. 



Mesomphalus submarginata Ulrich and Bassler. 



Mesomphalus submarginata Ulrich and Bassler, Maryland Geol. Surv., Low. Dev., 



1913, p. 523, pi. 96, figs. 4, 5. 

 Helderbergian (Keyser): Cumberland, Maryland. 

 Holotype.— Cat. No. 53308, U.S.N.M. 



MESOPAL^EASTER Schuchert. Genotype: Pakeaster shtefferi Hall. 



Palajaster (part) of authors. 

 ?Argaster Hall, 20th Rep. New York State Cab. Nat. Hist., 1868, p. 287; rev. ed., 



1868-1870, p. 329 (nom. mid.). 

 Mesopalreaster Schuchert, in Freeh, Foss. Cat., 1, Anim., pt. 3, 1914, p. 24; Bull. 



U. S. Nat, Mus., 88, 1915, p. 74. 



Mesopaloeaster antiquus (Troost). 



Asterias antiqua Troost (not Hisinger, 1837), Trans. Geol. Soc. Pennsylvania, 1, 



1835, p. 232, pi. 10, fig. 9; 5th Geol. Rep. Tennessee, 1840, pp. 11, 55; ibid., 



6th Rep., 1841, p. 176; Proc. Amer. Assoc. Adv. Sci., 2, 1850, p. 59. 

 Petraster(?) antiqua Shumard, Trans. Acad. Sci. St. Louis, 2, 1866, p. 386 (gen. 



ref.). 

 Palseaster (Argaster) antiqua Hall, 20th Rep. New York State Cab. Nat, Hist., 



1868, p. 287; rev. ed., 1870, p. 329. 

 Palseaster antiqua James, Jour. Cincinnati Soc. Nat. Hist., 18, 1895, p. 133. — 



Wood, Bull. U. S. Nat. Mus., 64, 1909, p. 105, pi. 8, fig. 1. 

 Argaster antiqua Gregory, Geol. Mag., dec. 4, 6, 1899, p. 345 (gen. ref.). 

 Mesopakeaster antiquus Schuchert, in Freeh, Foss. Cat., 1, Anim., pt. 3, 1914, p. 



24; Bull. U. S. Nat. Mus., 88, 1915, p. 86. 

 Trenton (Catheys) : Harpeth River, Davidson County, Tennessee. 



Mesopala>aster bellulus (Billings). 



Petraster bellulus Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 393, fig. 368.— 



Miller, N. A. Geol. Pal., 1889, p. 269, fig. 389. 

 Mesopalseaster bellulus Schuchert, in Freeh, Foss. Cat., 1, Anim., pt. 3, 1914, p. 24; 



Bull. U. S. Nat. Mus., 88, 1915, p. 91, fig. 7. 

 Clinton (Rochester): Grimsby, Ontario. 



Mesopalaeaster(?) cataractensis Schuchert. 



Mesopakeaster(?) cataractensis Schuchert, in Freeh, Foss. Cat., 1, Anim., pt. 3, 



1914, p. 25 (nom. nud.); Bull. U. S. Nat. Mus., 88, 1915, p. 89, pi. 9, fig. 2. 

 Upper Medinan (Cataract): Hamilton, Ontario. 



Mesopalseaster dubius (Miller and Dyer). 



Palseaster dubius Miller and Dyer, Cont. to Pal., No. 2, 1878, p. 5, pi. 4, fig. 8.— 

 James, Jour. Cincinnati Soc. Nat. Hist., 18, 1895, p. 130. 



