94 R. R. GURLEY 
[Climacograptus Hall—con?'d.] 
parvus Hall, 1865 [not defined]. 
typicalis Hall, 1865. 
Clonograptus Hall, 1873. 
flexilis Hall, 1858. 
rigidus Hall. 1858. 
Coenograptus Hall, 1868. Type C. 
divergens. 
divergens Hall, 1859. 
gracilis Hall, 1847. 
surcularis Hall, 1868. 
Cyclograptus Spencer, 1884. 
rotadentatus Spencer, 1884. 
Dawsonia Nicholson, 1873. 
acuminata Nicholson, 1873. 
campanulata Nicholson, 1873. 
rotunda Nicholson, 1873. 
tenuistriata Nicholson, 1873. 
Dendrograptus Hall, 1865. 
[Omitted entirely. | 
compactus Walcott, 1879. 
dawsoni Spencer, 1884. 
diffusus Hall, 1865. 
divergens Hall, 1865, 
dubius Miller, sp. nov. 
erectus Hall, 1865. 
flexuosus Hall, 1865. 
frondosus Spencer, 1884. 
fruticosus Hall, 1865. 
gracilis Hall, 1865. 
[Climacograptus Hall—con?'d. | 
oligotheca Gurley, sp. nov. 
phyllophorus Gurley, sp. nov. 
scharenberg? Lapworth, 18763 
typicalis Hall, 1865. 
qwilsont Lapworth, 1876.3 
Dichograpsus Salter, 1863. 
Dichograpsus flexilis. 
Dichograpsus rigidus. 
Corynoides Nicholson, 1867.4 Type 
C. calicularis. 
calicularts Nicholson, 1867.4 
Cryptograptus Lapworth, 1880.5 Type 
C. tricornis (=marcidus Hall). 
antennarius (Hall), 1865. 
tricornis (Carruthers), 1858.5 
Stephanograptus Geinitz, 1866. Type 
S. gracilis. 
Amphigraptus divergens. 
Stephanograptus gracilis. 
Stephanograptus surcularis. 
Cyclograptus Spencer, 1884. 
rotadentatus, Spencer, 1884. 
Dawsonia Nicholson, 1873. 
acuminata Nicholson, 1873. 
campanulata Nicholson, 1873. 
monodon Gurley, sp. nov. 
rotunda Nicholson, 1873. 
tenuistriata Nicholson, 1873. 
tridens Gurley, sp. nov. 
Dendrograptus Hall, 1862. 
arunadinaceus (Hall), 1847.° 
compactus Walcott, 1879. 
dawsoni Spencer, 1884. 
diffusus Hall, 1865. 
divergens Hall, 1865. 
dubius Miller, 1889. 
erectus Hall, 1865. 
flexuosus Hall, 1865. 
frondosus Spencer, 1884. 
fruticosus Hall, 1865. 
gracilis Hall, 1865. 
