CATALOGUE OF TRILOBITES. 317 



ILL^NUS. LICHAS. 



viNDEX Bill, 1S65; Pal. Foss., vol. 1, p. 179, fig. 160. Mingan Islands. 



Chazy. 

 {Bumastus) worthenanus W. & M., 1S66; Mem. Boston Soc. Nat. 



His., vol. 1, pt. 1, p. 105, pi. 3, fig. 13 (referred by Hall, 20th Rep. 



New York State Cab. Nat. Hist., to Ilkenus armatus Hall). 

 Isoletus De Kay, 1825; Annals Lyceum Nat. Hist. New York, vol. 1, p. 174. 



canalis. (See Asaphus canalis.) 



Cyclops. (See Asaphus platycephalus.) 



• gigas. (See Asaphus platycephalus.) 



mazimus. (See Asaphus viaximus.) 



megalops Green, 1832; Mon. Tril. N. A., p. 70, cast 75. 



megtstos. (See Asaphus maximus.) 



platycephalus. (See Asaphus platycephalus). 



planus. (See Asaphus platycephalus.) 



stegops. (See Asaphus platycephalus.) 



vigilans. (See Asaphus vigilans.) 



LfiPTOPLASTrs Ang., 1854; Pahijont. Scand., p. 46. 



LATUS Matt., 1891; Canadian Eecord of Sci., 1891, p. 462, figs, 1-3. 



LATUS Matt., 1891; Trans. Eoyal Soc. Canada, vol. 9, p. 54, pi. 13, 



figs. 10 a, b. St. John, N. B. For other species see Anomocare. 



LiCHAS Dalm., 1826; Palaead., pp. 53, 71, pi. 6, fig. 1. 



Syn., Platynotus Con., 1838; Geol. Survey New York, Rep. Pal Dept., 

 p. 118. 

 Arges Gold., 1839 (in part). 



Metopias Eichw., 1842; Die Urwelt Russ., p. 62, pi. 3, figs. 21-23. 

 Arctiiiurus Cast., 1843; Syst. Sil. de I'Amer., p. 21. 

 Nuttainia Portl. & Emm. 

 Cor ydocephalus Cord., 1847; Prodr., p. 255. 

 Dicranopeltis Cord., 1847; Prodr., p. 257. 

 Acanthopjyge Cord., 1847; Prodr., p. 260. 

 Dicranogmus Cord., 1847; Prodr., p. 261. 

 Subgenera, Hoplolkhas Dames, 1877; Zeitschr. Deutsch. Geol. Gesell., 

 p. 794. Type, Hoplolkhas trkuspidata Beyr. 



CoHoUchas Dames, 1877; Zeitschr. Deutsch. Geol. Gesell., p. 

 806. Type, Conolichas cequiloba Steinh. 



armatus Hall. (See Acida'^pis eriopis Hall.) 



(Hoplolkhas) bicomes Ulreth, 1892; The Amer. Geol., vol. 10, p. 272, 



fig. Spring Valley, Minn. Hudson. 



BiGSBYi Hall, 1859; Pal. New York, vol. 3, p. 364, pi. 77, figs. 1-8. 



Coeymans, Schoharie and Carlisle. Lower Helderberg. 



(Conolichas) bicsbyi? Hall, 1888; Pal. New York, vol. 7, p. 80, pi. 19 



a, fig. 1. 

 Paradoxides boltoni Bigsby, 1825; Jour. Acad. Nat. Sci. Phila., 

 vol. 4, p. 365, plate. Lockport, N. Y. Niagara. 



