10 PEOCEEDINGS OF THE NATIONAL MUSEUM vol, 72 



Drepanodus infiexus Pander, 1856 (p. 20, pi. 1, fig. 3; pi. 2, fig. 16). Lower 



Ordovician, Baltic Provinces. 

 Drepanodus oMusus Pandee, 1856 (p. 21, pi. 2, fig. 11). Lower Ordovician, 



Baltic Provinces. 

 Drepanodus roiustiis Haddino, 1913 (p. 31, pi. 1, fig. 5). Ordovician, Dicello- 



graptus zone, southern Norway. 

 Drepanodus verutus Hadding, 1913 (p. 31, pi. 1, fig. 4). Ordovician, Dicello- 



graptus zone, southern Norway. 

 Euprioniodina Ulbich and Bassler, 1926 (p. 29). Genotype: Euprioniodma 



deflecta Ulrich and Bassi.ee, 1926. 

 Euprioniodina acicularis Hinde, 1879, Prioniodus acictilaris Hinde, 1879 (p. 360, 



pi. 15, figs. IS, 19). Devonian, Genesee, Kettle Point, Ontario; Grabau, 1899 



(p. 151, fig. 33E). 

 Euprioniodina ? alata Hadding, 1913, Prioniodus alatus Hadding, 1913 (p. 32, 



pi. 1, figs. 9, 10). Ordovician, Diceilograptus zone, southern Norway. 

 Euprioniodina l)ryanU Ulrich and Bassler, 1926 (p. 29, pi. 3, figs. 13, 14; 



pi. 1, fig. 21). Upper Devonian, Rhinestreet shale of the Portage group 



Shaleton, Erie County, N. Y. 

 Euprioniodina conferta Ulrich and Bassler, 1926 (p. 29, pi. 3, fig. 13, 14; 



pi. 1, fig. 21). Upper Devonian, Rhinestreet shale of the Portage group, 



Shaleton, Erie County, N. Y. 

 Euprioniodina conferta Ulrich and Bassler, 1926 (p. 29, pi. 3, fig. 17). Upper 



Devonian, Rhinesti'eet shale of the Portage group, Shaleton, Erie County, N. Y. 

 Euprioniodina curvata Smith, 1907, Prioniodus curvatus Smith, 1907 (p. 249, 



pi. 8, fig. 40). Ordovician, Arenig-Llandeilo, southern uplands of Scotland. 

 Euprioniodina deflecta Ulrich and Bassler, 1926 (p. 29, pi. 3, figs. 11, 12). 



Upper Devonian, Rhinestreet shale of the Portage group, Shaleton, Erie 



County, N. Y. 

 Euprioniodina ? discedens Hadding, 1913, Prioniodus discedens Hadding, 1913 



p. 32, pi. 1, fig. 11). Ordovician, Diceilograptus zone, southern Norway. 

 Euprioniodina ? furcata Hinde, 1879, Prioniodus furcaius Hinde, 1879 (p. 358, 



pi. 15, fig. 13) ; Parks, 1923 (p. 37, pi. 6, fig. 27). Upper Ordovician, Lorraine- 



Dundas, Garrison Common near Toronto, Ontario. 

 Euprioniodina ? lanceolata Smith, 1907, Polygnathus lanceolatus Smith, 



1907 (p. 245, pi. 5, fig. 16). Ordovician, Arenig-Llandeilo, southern uplands 



of Scotland. 

 Euprioniodina peculiaris Ulrich and Bassler, 1926 (p. 30, pi. 10, fig. 3)i 



Mississippian, Hardin sandstone at base of Chattanooga shale. Mount 



Pleasant, Tenn. 

 Euprioniodina perangulata Ulrich and Bassler, 1926 (p. 30, pi. 3, fig. 10). 



Upper Devonian, Rhinestreet shale of the Portage group, Shaleton, Erie 



County, N. Y. 

 Euprioniodina ? radicans Hinde, 1879, Prioniodus radicans Hinde, 1879 



(p. 356, pi. 15, figs. 1-6; Grabau and Shimee, 1910 (p. 244, figs. 1538 a-c). 



Lower Ordovician (Chazy) Grenville, Quebec. 

 Onathodus Pander, 1856 (p. 33). Genotype (first species) : Gnathodus mos- 



guensis Pander, 1856. See also Hinde, 1879 (p. 365) ; Brtant, 1921 (p. 22) ; 



Ulrich and Bassler, 1926 (p. 54), and Roundy, 1926 (p. 12). 

 Gnathodus americanus Bryant, 1921 (p. 22, pi. 7, fig. 5). Upper Devonian, 



Genundewa limestone at base of Genesee, North Evans, Eighteen Mile Creek, 



N. Y. ; Ulrich and Bassler, 1926 (p. 54, pi. 1, fig. 5). Upper Devonian, 



Rhinestreet shale of the Portage group, Chaleton, Erie County, N. Y. 



