NORTH AMERICAN GRAPTOLITES 97 
[ Didymograptus M’Coy—con? a. | 
geminus Hisinger, 1840. 
Diplograptus M’Coy, 1854. 
amplexicaulis Hall, 1847. 
angustifolius Hall, 1859. 
ciliatus Emmons, 1856. 
dissimilaris Emmons, 1856. 
foliaceous (?) Murchison, 1839. 
foliosus Emmons, 1856. 
folium Hisinger, 1837. 
hudsonicus Nicholson, 1875, 
hypniformis White, 1874. 
inutilis, Hall 1865. 
laciniatus Emmons, 1856. 
marcidus Hall, 1859. 
mucronatus Hall, 1847, 
obliquus Emmons, 1856. 
peosta Hall, 1861. 
pristiniformis Hall, 1858. 
pristis (?) Hisinger, 1837. 
putillus Hall, 1865. 
| Didymograpsus M’Coy—con?'d. | 
Cit, 
Not American (see p. /m). 
hirundo Salter, 1863. 
indentus (Hall), 1858. 
Surcillatus 
worth, 1875.2 
nitidus (Hall), 1858. 
patulus (Hall), 1858. 
pennatulus (Hall), 1858. 
perflexus Gurley, sp. nov.. 
serratulus (Hall), 1847. 
similis (Hall), 1865. 
superstes Lapworth, 1876.3 
murchisont Lap- 
Diplograpsis M’Coy, 1851. 
"wu 
D. foliaceus. 
angustifolius (Hall), 1859. 
Glossograpsus arthracanthus. 
dentatus (Brongniart), 1828.%°° 
D. foliaceus. 
dubius Spencer, 1884. 
euglyphus Lapworth, 1880.5" 
foliaceus (Murchison), 1839.. 
(=amplexicaule Hall, 1847.) 
' (=dissimilaris Emmons, 1856.) 
(=laciniatus Emmons, 1856.) 
(=obliquis Emmons, 1856.) 
(=pristis Hall, 1847.) 
(=rugosus Emmons, 1856.) 
(=simplex Emmons, 1844.) 
foliosus Emmons, 1856. 
Not American (see p. */,). 
hudsqnicus Nicholson, 1875. 
hypniformis White, 1874. 
inutilis (Hall), 1865. 
D. foliaceus. 
Cryptograptus tricornis. 
Lasiograptus mucronatus. 
D. foliaceus. 
peosta (Hall), 1861. 
D. dentatus. 
D. foliaceus. 
putillus (Hall), 1865. 
