716 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



LEPTOGRAPTUS FLACCIDUS SPINIFER mut. TRENTONENSIS Ruedemann. See Lepto- 

 graptus flaccidus spinifer. 



Leptograptus flaccidus trentonensis Ruedemann. 



Leptograptus flaccidus mut. trentonensis Ruedemann, Mem. New York State 



Mus., 11, pt. 2, 1908, p. 261, pi. 14, fig. 7; figs. 172-175. 

 Chazyan (Normanskill) : Glenmont and Mount Moreno, New York. 



Leptograptus macrotheca Gurley. 



Leptograptus? macrotheca Gurley, Jour. Geol., 4, 1896, p. 69. 

 Canadian (Levis): Point Levis, Quebec. 



LEPTOGRAPTUS STJBTENUIS Walcott. See Didymograptus subtenuis. 

 LEPTOGRAPTUS TENUIS Lapworth. See Didymograptus subtenuis. 



LEPTOPLASTUS Angelin. Genotype: L. stenotus Angelin. 



Leptoplastus Angel in, Pal. Scandinavica, 3d ed., Holmiae, 1878, p. 46. 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. Sven. Yet.-Akad. Handl., 34, No. 8, 1901, 

 p. 22. 



LEPTOPLASTUS (SPH^ROPHTHALMUS) ALATUS Brogger. See Sphserophthalmus alatus. 

 LEPTOPLASTUS (CTENOPYGE) 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?) LOB ATA Brogger. See Ctenopyge? lobata. 

 LEPTOPLASTUS (CTENOPYGE) SPECTABILIS Brogger. See Ctenopyge spectabilis. 

 LEPTOPLASTUS SPINGER Matthew. See Acantholenus spiniger. 



Leptoplastus spinosus Matthew. 



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 Ulrich. 



Leptopoterion Ulrich, Amer. Geol., 3, 1889, 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. 



Leptopoterion mammiferum Ulrich. 



Leptopoterion mammiferum Ulrich, 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., 1889, p. 156, fig. 99. J. F. James, 



Jour. Cincinnati Soc. Nat. Hist., 14, pt, 1, 1891, p. 65. 

 Maysville (Corryville): Cincinnati, Ohio. 



LEPTOSTROPHIA Hall and Clarke. See Stropheodonta subgenus Leptostrophia. 



