274 CALIFORNIA ACADEMY OF SCIENCES. 



ASAPHUS. 



MARGINALIS Emnious, 1855; Am. Geol., vol. 1, pt. 2, p. 235, pi. 3, 



fig. 16. 



Isotelus MAXIMUS Locke, 1838; 2d Ann. Kep. Geol. Survey Ohio, p. 



246, figs. 8, 9. Trenton and Hudson. 



Syn., Isotelus megistos Locke, 1841; Trans. Am. Assoc. Geol. Nat., p. 



221, pi. 6. 

 Isotelus megistos Locke, 1842; Am. Jour. Sci., 1st series, vol. 



42, p. 366, pi. 3. 

 Isotelus megistos Meek, 1873; Pal. Ohio, vol. 1, p. 157, pi. 14, 



fig. 13. 

 Isotelus megistos Miller, 1874; Cincinnati Quart. Jour. Sci., vol. 



1, p. 137. 

 Asajihus megistos Wai., 1884; Science, March 7, vol. 3, p. 200, 



fig. 1. 



Asaphux megalopthalmus Troost, 1840; 5th Geol. Rep. Tennessee, p. 57. 

 This is a species of the genus Phacops. 



- MICROPLEURUS Green, 1835; Suppl. Mon. Tril. North America, p. 21, 



cast No. 41. 



micrurus. (See Dalmanites micrurus.} 



morris! Bill., 1865; Pal. Foss., vol. 1, p. 272, fig. 257, syn. to Asaphus 



huttoni Bill. 



murchisoni Castelnau, Essai Sys. Sil., 1843, p. 19, pi. 4, fig. 3. Bathy- 



iirus'.t murchisoni. Trenton. 



myrmecophorus. (See Dalmanites myrmecophorus.} 



nasutus. (See Dalmanites nasutus.) 



- < nodostriatus Hall, 1847; Pal. New York, vol. 1, p. 248, pi. 61, figs. 



1 a, b. (See Bathyurus extans Hall.) 



- NOTANS Bill., 1866; Catalogue Silurian Foss. Anticosti, p. 25, fig. 8. 



cf. Asaphus maximus Locke. English Head. Hudson. 



- ? OBTUSUS Hall, 1847; Pal. New York, vol. 1, p. 24, pi. 4 bis, fig. 14. 



Chazy village, Clinton count} 7 , N. Y. 



OBTUSUS Emm., 1855; Arn. Geol., vol. 2, pt. 2, p. 236, pi. 3, fig. 14. 



- PELOPS Bill., 1865; Pal. Foss., vol. 1, p. 317, fig. 304. Bedford, in 



the bed of Pike River, and upper end of the island of Orleans. 



Quebec. 



- PLATYCEPHALUS Stokes, 1823; Trans. Geol. Soc. London, 2d series, 



vol. 1, p. 208, pi. 27. Canada, New York, Kentucky, etc. 



Trenton. 

 Syn., Isotelus gigas Dekay, 1824; Annals Lyceum Nat. Hist. New 



York, vol. 1, p. 176, pi. 12, fig. 1. 

 Isotelus i^lamis Dekay, 1824; Annals Lyceum Nat. Hist. New 



York, vol. 1, p. 178, pi. 13, fig. 7. 

 Asaphus gigas Da 1m., 1826; Palnead., p. 70. 

 Asaphus gigas and planus Dalm., 1826; Palaoad., p. 70. 



