1270 BULLETIN" 92, UNITED STATES NATIONAL MUSEUM. 



Tetragraptus serra — Continued. 



Graptolithua bryonoides Hall, Geol. Surv. Canada, Rep., 1858, p. 12G; Canadian 



Nat. and Geol., 3, 1858, p. 150; Geol. Surv. Canada, Can. Org. Rem., dec. 



2, 1865, p. 84, pi. 4, figs. 1-8, 11.— Billings, Geol. Surv. Canada, Pal. Foss., 



1, 1865, p. 366, 375. 

 Graptolites (Didymograpsus) bryonoides McCoy, Geol. Surv. Victoria, Prodr. de 



Pal. Victoria, dec. 1, 1874, p. 15, pi. 2, figs. 2, 3, 5. 

 Tetragrapsus bryonoides Nicholson, Quart. Jour. Geol. Soc. London, 24, 1868, p. 



131. --Salter, ibid., 19, 1863, p. 137, fig. 8a. 

 Tetragraptus bryonoides Etheridge, jr. (part), Ann. Mag. Nat. Hist., 4th ser., 14, 



1874, p. 2, pi. 3, fig. 1.— Linnarsson, Sver. Geol. Und. Afh. och upps., ser. C, 



No. 31, 1879, p. 5.— Brogger, Die sil. Etagen 2 and 3, 1882, p. 38.— Tullberg, 



Skanes Grap. in Sver. Geol. Und. Afh. och upps., ser. C, No. 50, 1882, p. 22.— 



Roemer and Freeh, Leth. pal., 1, 1897, p. 601. 

 Didymograpsus caduceus Salter (part), Quart. Jour. Geol. Soc. London, 9, 1853, 



p. 87, fig. la. 

 Tetragraptus quadribrachiatus Etheridge, Ann. Mag. Nat. Hist., 4th ser., 14, 



1874, p. 3, pi. 3, figs. 5-8. 

 Canadian: Point Levis, Quebec (Levis, Clonograptus, Didymograptus, and 



Diplograptus dentatus zones); Newfoundland; Deepkill, Rensselaer County, 



New York (Deepkill, Tetragraptus zone); Arkansas; Sweden; France; 



Australia; Great Britain (Skiddaw). 



Tetragraptus siinilis (Hall). 



Phyllograptus similis Hall, Geol. Surv. Canada, Rep. for 1858, p. 140; Canadian 

 Nat. and Geol., 3, 1858, p. 173.— Moberg, Geol. Foren. Stockholm Forhandl., 

 13, 1891, p. 219. 



Tetragraptus similis Ruedemann, Mem. New York State Mus., 7, pt. 1, 1904, pp. 

 658-662, pi. 12, figs. 2-10; figs. 58-61; p. 642, fig. 48; p. 644, figs. 49, 50. 



Didymograpsus caduceus Salter, Quart. Jour. Geol. Soc. London, 19, 1863, p. 137, 

 fig. 13b(?). 



Didymograptus caduceus Nicholson, Quart. Jour. Geol. Soc. London, 24, 1868, p. 

 138. 



Tetragraptus caduceus Brogger, Die sil. Etagen 2, 3, 1882, p. 38. — Perner, Etudes 

 sur les Grapt. de Boheme, pt. 2, 1894, p. 20, pi. 6, figs. 9-12. 



Graptolithus bigsbyi Hall, Geol. Surv. Canada, Can. Org. Rem., dec. 2, 1865, p. 

 86, pi. 16, figs. 22-30. 



Graptolithus (Monoprion) bigsbyi Hall, 20th Rep. New York State Cab. Hist., 

 1868, p. 226, pi. 3, figs. 18-21; rev. ed., 1870, p. 260, pi. 3, figs. 18-21; p. 223. 



Tetragraptus bigsbyi Linnarsson, Sver. Geol. Und. Afh. och upps., Ser. C, No. 31, 

 1879, p. 5.— Tullberg, ibid., No. 50, 1882, p. 22.— Ami, Geol. Surv. Canada, 

 Rep., 2d Ser., 3, pt. 2, 1889, p. 116k.— Moberg, Geol. Foren. Stockholm 

 Forhandl., 13, 1891, p. 219.— Holm, Sver. Geol. Und. Afh. och upps., Ser. C, 

 No. 150, 1895, p. 24, pi. 1, figs. 9-16; pi. 2, figs. 1-3; pi. 3, figs. 13-16; p. 25, 

 figs. 1-7; Geol. Mag., dec. 4, 2, 1895, p. 484, pi. 13, figs. 9-16; pi. 14, figs. 13-16; 

 p. 485, figs. 1-3. — Roemer and Freeh, Leth. Geog., 1 Theil, Leth. Pal., 1, 

 1897, pp. 600, 601, fig. 166, pi. A, figs. 4-6b.— Elles, Quart. Jour. Geol. Soc. 

 London, 54, 1898, p. 488.— Ruedemann, Bull. New York State Mus., 52, 1902, 

 pp. 556, 566; p. 590, fig. 18.— Elles and Wood, Mon. British Grapt., pt. 1, 

 Pal. Soc, 1902, p. 68, pi. 6, figs. 6a-e, fig. 42a.— Grabau and Shimer, N A. 

 Index Fossils, 1, 1906, p. 29, fig. 43. 



Tetragraptus bryonoides Etheridge, jr., Ann. Mag. Nat. Hist., 4th ser., 14, 1874, 

 p. 2, pi. 3, figs. 1, 2 (not figs. 3, 4). 



