660 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Illonia? cos tula t a Whiteavee. 



Ilionia(?) costulata Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 1, 1884, p. 15, 



pi. 2, fig. 5; ibid., pt. 2, 1895, p. 68 (loc. occ.). 

 Niagaran (Guelph): Elora and Durham, Ontario. 



ILIONIA GALTENSIS Whiteaves. See Prolucina galtensis. 



Ilionia? parvula Whiteaves. 



Ilionia(?) parvula Whiteaves, Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 288, 



pi. 28, figs. 6-8. 

 Niagaran: Ami Island near northeast shore of Lake Winnipegosis, Manitoba. 



Ilionia sinuata (Hall). 



Anatina? sinuata Hall, Pal. New York, 3, 1859, p. 265, pi. 49, figs. 3a-3d. 

 Ilionia sinuata Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 1, 1884, p. 15. 



Schuchert, Amer. Geol., 31, 1903, p. 168. Grabau and Shimer, N. A. Index 



Fossils, 1, 1909, p. 379. 

 Cayugan (Cobleskill and Manlius): Litchfield and Winfield, Herkimer County, 



New York. 



ILLJENOIDES Weller. Genotype: I. triloba Weller. 



Illsenoides Weller, Bull. Chicago Acad. Sci., Nat, Hist. Surv., 4, pt. 2, 1907, p. 

 226. 



Illsenoides triloba W T eller. 



Illsenoides triloba Weller, Bull. Chicago Acad. Sci., Nat. Hist. Surv., 4, pt. 2, 



1907, p. 226, pi. 17, figs. 6-9; pi. 19, figs. 12-14. 

 Niagaran .(Racine) : Bridgeport, Joliet, and near Lemont, Illinois. 



ILLJENURUS Hall. Genotype: I. quadratus Hall. 



Illaenurus Hall, 16th Ann. Rep. New York State Cab. Nat. Hist., 1863, p. 176; 

 Trans. Albany Inst., 5, 1867, p. 167. Zittel, Handb. Pal., 2, 1885, p. 612. 

 Miller, N. A. Geol. Pal., 1889, p. 550. 



ILLAENURUS COLUMBIANA Weller. See Smyphysurus convexus. 



Illaenurus convexus Whitfield. 



Illaenurus convexus Whitfield, Ann. Rep. for 1877, Wisconsin Geol. Surv., 1878, 

 p. 66; Geol. Wisconsin, 4, 1882, p. 203, pi. 4, figs. 3-5. Chamberlin, ibi 

 1, 1883, p. 141, fig. 

 Ozarkian (Mendota): East of Baraboo, Wisconsin. 



ILI^ENURUS EUREKENSIS Walcott. See Symphysurus eurekensis. 



ILL2ENUS Dalman. Genotype: Entomostracites crassicauda Wahlenl 



Illsenus Dalman, Svenska Vet.-Akad. Handl.,1826, 1827, p. 248. Dalman-Engel- 

 hart, Die Palaeaden, Nurnberg, 1828, p. 50. Green, Mon. Tril. N. A., 1832, 

 p. 18. Portlock, Rep. Geol. Londonderry, 1843, p. 299. Burmeister, Org. 

 derTril., Berlin, 1843, p. 118. Goldfuss, Neues Jahrb. f. Min., etc., 1843, pp. 

 541, 553. Emmrich, Neues Jahrb. f. Min., etc., 1845, p. 41. Rouault, BT 

 Soc. Geol. France, 2d ser., 4, 1847, p. 318. Hawle and Corda, Abh. 

 bohmischen Gesell. d. Wiss., 5, 1847 (extract), p. 54, pi. 3, fig. 29. M< 

 Ann. Mag. Nat. Hist. (2), 4, 1849, p. 399. Salter, Mem. Geol. Surv. United 

 Kingdom, dec. 2, 1849, pis. 3, 4. Barrande, Neues Jahrb. f. Min., etc., 

 1850, p. 779; Syst. Sil. du Centre Boheme, 1, 1852, p. 669. McCoy, British 

 Pal. Rocks Fossils, 1854, p. 171. Angelin, Pal. Scandinavica, 3d ed., Hol- 

 mise, 1854, p. 41. Pictet, Traite* de Pal., 2d ed., 2, 1854, p. 514. Nieszkowski, 

 Archiv. f. Naturk. Liv-, Ehst-u. Kurl. (1), 1, 1857, p. 579. Hitchcock, 

 Gol, Vermont, 1, 1862, p. 280. Volborth, Mm. 1'Acad. Imp. Sci. St. Petrfr 



