gs IR Ti (GIRLIE 
| Diplograptus M’Coy—con?d. | [| Diplograpsis M’Coy—con?'d. | 
quadrimucronatus (Hall), 1865. 
rugosus Emmons, 1856. ° D. foliaceus. 
rectangularis McCoy, 1851. Climacograptus rectangularis. 
secalinus Hall, 1847. secalinus (Hall), 1847. 
simplex Emmons, 1844. D. foliaceus. 
spinulosus Hall, 1859. Glossograpsus spinulosus. 
trifidus Gurley, 1892. 
truncatus Lapworth, 1876.3 
whitfieldi Hall, 1850. whitfieldi (Hall), 1859. 
Glossograptus Emmons, 1856. Glossograpsus Emmons, 1856. 
arthracanthus Gurley, sp. nov. 
ciliatus Emmons, 1856. ciliatus Emmons, 1856. 
setaceus Emmons, 1856. setaceus Emmons, 1856. 
spinulosus (Hall), 1859. 
Gontograptus M’Coy, 1877. Type G 
thureaul. 
thureaut selwynt Ami, 1889. 
‘Graptolithus Linneus, 1736. Established upon inorganic objects ; 
should be dropped entirely. 
abnormis Hall, 1858. Dichograpsus abnormis. 
alatus Hall, 1858. Tetragrapsus alatus. 
annectans Walcott, 1879. Leptograptus annectans. 
approximatus Nicholson, 1873. Tetragrapsus approximatus. 
arcuatus Hall, 1865, Didymograpsus arcuatus. 
bifidus Hall, 1858. Didymograpsus bifidus. 
bigsbyi Hall, 1865. Tetragrapsus bigsbyi. 
-bryonoides Hall, 1858. Tetragrapsus serra. 
clintonensis Hall, 1843. Lomatoceras clintonense. 
constrictus Hall, 1865. Didymograpsus hirundo. 
-crucifer Hall, 1858, Tetragrapsus crucifer. 
dentatus Emmons, 1842. Diplograpsis foliaceus. 
denticulatus Hall, 1858. Tetragrapsus denticulatus. 
divergens Hall, 1859. Amphigraptus divergens. 
extensus Hall, 1858. Didymograpsus extensus. 
extenuatus Hall, 1865. Didymograpsus extenuatus. 
flaccidus Hall, 1865. Leptograptus flaccidus. 
fruticosus Hall, 1858. Tetragrapsus fruticosus. 
gracilis Hall, 1847. Stephanograptus gracilis. 
headi Hall, 1858. Tetragrapsus headi. 
indentus Hall, 1858. Didymograpsus indentus. 
laevis Hall, 1847. Phycograptus levis. 
