CATALOGUE OF TRILOBITES. 267 



AGNOSTUS. AGRAULOS. 



- TUMIDOSUS H. & W., 1877; U. S. Geol. Expl. 40th Par., vol. 4, p. 231, 



pi. 1, fig. 32. Eureka, Nevada. Taconic. 



TUMIDOSUS Brogg., 1886; Geol. Foren Stock. Forhandl, vol. 8, p. 207. 



cf. Agnostus quadratus Tullb. Paradoxides zone. 



TUMIDOSUS Vogd., 1892; American Geol., vol. 4, p. 393, pi. 10, fig. 8. 



Sec. Limbati. 



AGRAULOS Cord., 1847; Prodr., p. 23. Tacouic. 



Syn., Arion Barr., 1846; Notice Prelim., p. 13. 



Ellipsocephalus Barr., 18*6; Notice Prelim., p. 12 (not Ellipso- 



cephalus Zenk. or Elliptocephalus Emm.) 

 Arionellus Barr., 1852; Syst. Sci. Boheme, p. 404. 



AFFINIS Bill., 1874; Pal. Foss., vol. 2, p. 72. Branch St. Mary's Bay, 



N. F. Taconic. 



- AFFINIS Matt., 1886; Trans. Royal Soc. Canada, vol. 2, p. 153, figs. 2, 



2a-b. 



- ? articephalus Matt., 1885; Trans. Roy. Soc. Canada, vol. 3, p. 75, pi. 



7, figs. 14, a-b. Hanford Brook, St. Martin's. St. John Group. 



(See Ellipsocephalus anticephalus.) 

 Arionellus BIPUNCTATUS Shum., 1863; Trans. Acad. Sci. St. Louis, 



vol. 2, p. 101. Lawrence Creek, Minnesota. Taconic. 



Arionellus BIPUNCTATUS Hall., 1863; 16th Rep. New York State Cab. 



Nat. Hist,, p. 169, pi. 7, figs. 50-57. 



Arionellus (Agraulos) CONVEXUS Whitf., 1878; Ann. Rep. Geol. Sur- 

 vey Wisconsin, 1877, p. 57. Ironton, Sank county, Wis. 



Tacouic. 

 Arionellus CONVEXUS Whitf., 1882; Geol. Wisconsin, vol. 4, p. 190, 



pi. 1, fig. 17. 

 Arionellus cylindricus Bill., 1860; Canadian Naturalist, vol. 5, p. 314, 



fig. 14. Point Levis, Quebec. 

 Arionellus cylindricus Bill., 1865; Pal. Foss., vol. 1, p. 406, fig. 385. 



(See Ptychaspis cylindricus.) 



- ? GLOBOSUS Wai., 1884; Pal. Eureka Dist., Mon. U. S. Geol. Survey, 



vol. 8, p. 61, pi. 9, fig. 23. Eureka, Nevada. Taconic. 



(Strenuella ?) HALLIANUS Matt., 1887; Trans. Roy. Soc. Canada, vol. 



5, p. 132, pi. 1, fig. 2. Portland, Simonds and St. Martin's. St. 

 John Group. 



? HOLOCEPHALUS Matt., 1890; Trans. Roy. Soc. Canada, vol. 8, p, 138, 



pi. 11, fig. 5, 5 a-d. Torryburn Cove, Kennebecasis. St. John 

 Group. 



OWENI Meek and Hayden, 1861; Proc. Acad. Nat. Sci. Phila., 1861, 



p. 436. Head of Powder River, Big Horn Mts. The species was 

 also referred to the genera Arionellus and Crepicephalus. 



Taconic. 



Arionellus OWENI Meek and Hayden, 1862; Am. Jour. Sci., 2d series, 

 vol. 33, p. 74. 



