716 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Leptograptus flaccidus si'inifer mut. trentonensis Ruedemann. See Lepto- 

 graptu3 flaccidua spinifor. 



Leptofjrapliis flaocldns Ircnfonensls Ruoilomann. 



L<'ptograptu3 flaccitiu.s mut. treiitoueiinis Rucilemanu, Mem. New York State 



Mus., 11, pt. 2, ]908, p. 261, pi. 14, fig. 7; figs. 172-175. 

 rhazyan (Normanskill): Glenmoiit and Mount Moreno, New York. 



Leptograptus macro theca Gurley. 



Leptograptus? macrothec-a Gurley, Jour. Geol., 4, 1896, p. G9. 

 Canadian (Levis): Point Levis, Quebec. 



Leptooraptus subtenuis Walcott. See Didyniograptus subtenuis. 



Leptograptus tenuis Lapworth. See DidjTnograptus subtenuis. 



LEPTOPLASTUS Angelin. Genotj-pe: L. etenotus Angelin. 



Loptoplastus Angelin, Pal. Scandinavica, 3d ed., Holmiae, 1878, p.4G. — Brogger, 

 Die sil. Etagen 2-3, Kristiania, 1882, p. 113.— Matthew, Trans. Roy. Soc. 

 Canada, 9, sec. 4, 1892, p. 53. — Koken, Die Leitfossilien, Leipzig, 1896, p. 20, 

 fig. 11, fig. 2.- Lindstrom, Kongl. Sveii. Vet.-Akad. Uandl., 34, No. 8, 1901, 

 p. 22. 



Leptoplastus (Sph.erophthalmus).alatu8 Brogger. See Sphaerophthalmus alatua. 



Leptoplastus (Ctenopyoe) flagellifer Linnarsson. See Ctenopyge flagellifer. 



Leptoplastus latus Matthew. 



Leptoplastus latus Matthew, Canadian Rec. Sci., 4, 1891, p. 462, figs. 1-3; Trans. 



Roy. Soc. Canada, 9, sec. 4, 1892, p. 54, pi. 13, figs. lOa-c. 

 Canadian (Bretonian — Div. C3b): St. John, New Brunswick. 



Leptoplastus (Ctenopyge?) lobata BrSgger. Se? Ctenopyge? lobata. 



Leptoplastus (Ctenopyge) spectabilis Brogger. See Ctenopyge spectabilis. 



Leptoplastus spinoer Matthew. See Acantholenus spiniger. 



Lejitoplastus spinosus ^^atthc'w. 



Leptoplastus spinosus Matthew, Trans. Roy. Soc. Canada, 9, sec. 4, 1894, p. 106, 



pi. 17, figs. 4a-e. 

 Canadian (Bretonian — Div. C3b): St. John, New Brunswick. 



LEPTOPOTERION Ulrich. Genotype: L. mammiferum l^lrich. 



Leptopotorion Ulrich, Amer. Geol., 3, 1SS9, pp. 235, 239.— Miller, N. A. Geol. 



Pal., 1889, p. 161.— James, J. F., Jour. Cincinnati Soc. Nat. Hist., 14, pt. 1, 



1891, p. 54.— Rauff, Abh. d'math.-phys. Classe bayer Akad. Wiss., 17, 1892, 



p. 691. 



Leptopotorion inaininiferum Ulrich . 



Leptoi)otcrion maniiniUMum L'lrich, Amer. Geol. 3, 1889, p. 239.— J. F. James, 



Jour. Cincinnati Soc. Nat. Hist.. 14. 1891, p. 54. 

 Chirospongia faberi Miller, N. A. Geol. Pal.. 1SS9, p. 156, fii:. 9i).-J. F. James, 



Jour. Cincinnati Soc. Nat. Hist., 14, ]>t. 1, 1891, p. 65. 

 Maysville (Corry^^lle): Cincinnati, Ohio. 



Leptostropuia Hall arid Clarke. See Stropheodonta subgenus Lejitostrophia. 



