BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 801 



Merocrinus typus Walcott. 



Merocrinus typus Walcott, 35th- Rep. New York State 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. hartley! Ulrich and Bassler. 

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



Mesomphalus hartley! Ulrich and Bassler. 



Mesomphalus hartley! 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. 

 Cotypes.G&t. 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.Czt. No. 53308, U.S.N.M. 



MESOPAL^ASTER Schuchert. Genotype: Palseaster shsefferi Hall. 



Palseaster (part) of authors. 

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



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

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



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



Mesopalaeaster 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.). 

 Mesopalaeaster 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. 



Mesopalaeaster 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. 

 Mesopalaeaster 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. 



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



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

 Upper Medinan (Cataract): Hamilton, Ontario. 



Mesopalaeaster dubius (Miller and Dyer). 



Palaeaster 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. 



