BIBLIOGRAPHIC LIST OP GENERA AND SPECIES. 1269 



Tetragraptus pendens Elles. 



Tetragraptus pendens Elles, Quart. Jour. Geol. Soc. London, 54, 1898, p. 491, fig. 

 13. — Ruedemann, New York State Pal. Ann. Rep., 1902, p. 5G6. — Elles and 

 Wood, Mon. British Grapt. Pal. Soc, 1902, p. 63, pi. 6, figs. 2a, b.— Ruede- 

 mann, Mem. New York State Mus., 7, pt. 1, 1904, pp. 653-655, pi. 11, figs. 

 17-20, fig. 55. 



Lower Ordovician: England (Skiddaw); Deepkill, Rensselaer County, New 

 York (Deepkill, Didymograptus bifidus zone); Point Levis, Quebec (Levis, 

 D. bifidus zone); Arkansas. 



Tetragraptus pygniaeus Ruedemann. 



Tetragraptus bigsbyi Ruedemann (part), New York State Pal. Ann. Rep., 1902, 



p. 590, fig. 18. 

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



pp. 664, 665, pi. 12, figs. 11-14. 

 Canadian (Deepkill, Tetragraptus, Didymograptus, and Diplograptus zones): 



Deepkill, Rensselaer County, and Mount Moreno, near Hudson, New York. 



Tetragraptus quadribrackiatus (Hall). 



Graptolithus quadribrachiatus Hall, Geol. Surv. Canada, Rep. for 1857, 1858, 

 p. 125; Canadian Nat. Geol., 3, 1858, p. 149; Geol. Surv. Canada, Can. Org. 

 Rem., dec. 2, 1865, p. 91, pi. 5, figs. 1-5; pi. 6, figs. 5, 6. 



Graptolites (Didymograpsus) quadribrachiatus McCoy, Jour. Geol. Surv. Victoria, 

 Prodr. Pal. Victoria, dec. 1, 1874, p. 15, pi. 2, fig. 1. 



Tetragrapsus crucialis Salter, Quart. Jour. Geol. Soc, 19, 1863, p. 137, fig. 8b. 



THragrapsus quadribrachiatus Nicholson, Quart. Jour. Geol. Soc. London, 24, 

 1868, p. 131.— Hopkinson, ibid., 31, 1875, p. 649, pi. 33, figs. 9a, b. 



Tetragraptus quadribrachiatus Linnarsson, Sver. Geol. Und. Afh. och upps., 

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

 Kristiania. — Tornquist, Sver. Geol. Und. Afh. och upps., ser. C, No. 57, 1883, 

 p. 16. — Herrmann, Quart. Jour. Geol. Soc, ser. 3, 3, 1886, p. 18. — Barrois, Ann. 

 de la Soc. Geol. du Nord, 20, 1892, p. 95.— Matthew, Trans, and Proc Roy. 

 Soc. Canada, 11, p. 114, 10, sec. 4, 1893, p. 98.— Roemer and Freeh, Leth. Pal., 

 1, 1897, p. 603.— Elles, Quart. Jour. Geol. Soc. London, 54, 1898, p. 485.— 

 Ruedemann, Ann. Rep. New York State Pal., 1902, p. 556.— Elles and Wood, 

 Mon. British Grapt., pt. 1, 1902, p. 57, pi. 5, figs, la-d, fig. 34.— Ruedemann, 

 Mem. New York State Mus., 7, pt. 1, 1904, pp. 645-647, pi. 11, figs. 1-4, figs. 

 51, 52.— Grabau and Shimer, N. A. Index Fossils, 1, 1906, p. 29, fig. 41. 



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

 lograptus dentatus zones); Deepkill, Rensselaer County, and Mount Morena, 

 New York (Deepkill, Tetragraptus, and D. dentatus zones); St. Johns, New 

 Brunswick; Great Britain (Skiddaw); Scandinavia; France; Australia. 



Tktkagraptus quadribrachiatus Etheridge. See Tetragraptus serra. 



Tetragraptus serra (Brongniart). 



Fucoides serra Brongniart, Hist. Veget. Foss., 1, 1823, p. 71, pi. 6, fig. 7, 8. 

 Tetragraptus serra Hopkinson and Lapworth, Ann. Mag. Nat. Hist., 4th ser., 31, 

 1875, p. 650, pi. 33, fig. 10.— Tornquist, Sver. Geol. Und. Afh. och upps., 

 eer. C, No. 57, 1883, p. 16.— Herrmann, Geol. Mag., 3d ser., 3, 1886, p. 19.— 

 Ami, Geol. Surv. Canada, Rep., 2d ser., 3, pt. 2, 1889, p. 116k. — Barrois, 

 Ann. Soc. Geol. du Nord, 20, 1892, p. 94.— Elles, Quart. Jour. Geol. Soc 

 London, 54, 1898, p. 490. — Ruedemann, Now York State Pal., Ann. Rep. 

 1902, pp. 554, 556, 566.— Elles, Wood, and Lapworth, Mon. Britisb Grapt., 

 pt. 1, Pal. Soc, 1902, p. 65, pi. 6, figs. 4a-f.— Ruedemann, Mem. New York 

 State Mus , 7, pt. 1, 1904, pp. 655-657, pi. 11, figs. 8-10, figs. 56, 57. 





