1104 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Beticularia (Prosserella) unilamellosa (Grabau). 



Prosserella unilamellosus Grabau, Michigan Geol. Surv., Geol. Ser., 1, 1909, p. 



1-16, pi. 19, figs. 9-11. 

 Upper Monroan (Lucas) : Patrick quarry, Grosse Isle, Detroit River. 



BETIOGRAPTUS Hall. Genotype: Graptolithus tentaculatua Hall. 



Retiograptus Hall, Geol. Surv. Canada, dec. 2, 1865, p. 115; 20th Rep. New York 



State Cab. Nat. Hist., 1868, p. 218; rev. ed., p. 251. Zittel, Handb. Pal., 1, 



1879, p. 302. Spencer, Trans. Acad. Sci. St. Louis, 4, 1884, p. 562. Miller, 



N. A. Geol. Pal., 1889, p. 202. Koken, Die Leitfossilien, Leipzig, 1896, p. 



329. Roemer and Freeh, Leth. geog., 1 Theil, Leth. Pal., 1, 3 Lief., 1897, p. 



607. Ruedemann, Mem. New York State Mus., 7, pt. 1, 1904, pp. 732, 633; 



ibid., Mem. 11, pt. 2, 1908, p. 462. 

 Reteograptus Hall, Pal. New York, 3, 1859, p. 518; 13th Rep. New York State 



Cab. Nat. Hist., 1860, p. 61. Gurley, Jour. Geol., 4, 1896, p. 80. 

 Retiograpsus Nicholson, Mon. British Grapt., 1872, p. 123. 



RETIOGRAPTUS BARRANDEI Hall. See Retiograptus geinitzianus. 

 RETIOGRAPTUS EUCHARIS Hall. See Lasiograptus (Thysanograptus) eucharis. 



Retiograptus geinitzianus (Hall). 



Reteograptus geinitzianus Hall, Pal. New York, 3, 1859, p. 518. Gurley, Jour. 



Geol., 4, 1896, p. 80. Freeh, Leth. Pal., 1, 1897, p. 608. Weller, Geol. Surv. 



New Jersey, Pal., 3, 1903, p. 215, pi. 16, fig. 18. 

 Retiograptus geinitzianus Walcott, Trans. Alb. Inst.,10, 1883 (adv. sheets, 1879, 



p. 35); Bull. Geol. Soc. Amer., 1, 1890, p. 339. Hall, 20th Rep. New York 



State Cab. Nat. Hist., 1868, p. 224. Ruedemann, Mem. New York State Mus., 



11, pt. 2, 1908, pp. 463-467, pi. 29, figs. 5, 6; pi. 31, figs. 9-17, figs. 444, 445. 

 Clathrograptus geinitzianus Lapworth, Ann. Mag. Nat. Hist., 5, 1880, p. 22. 



T. S. Hall, Geol. Surv. N. S. 1 \Vales Rec., 7, pt. 2, 1902, pi. 14, fig. 5. 

 Reteograptus barrandi Hall, New York State Cab. Nat. Hist., 13th Ann. Rep., 



1860, p. 61, fig. 

 Chazyan (Normanskill) : Kenwood, Chatham, etc., New York; New Jersey; 



Arkansas; Tennessee. 

 Phsriotype.Cat. No. 54248, U.S.N.M. (Ruedemann). 



Retiograptus tentaculatus (Hall). 



Graptolithus tentaculatus Hall, Geol. Surv. Canada, Rep. for 1857, 1858, p. 134; 

 Canadian Nat! Geol., 3, 1858, p. 167. 



Reteograptus tentaculatus Hall, Geol. Surv. Canada, dec. 2, 1865, p. 116f, pi. 14, 

 figs. 6-8. Gurley, Jour. Geology, 4, 1896, p. 299. Roemer and Freeh, Leth. 

 Pal., 1, 1897, p. 608. 



Retiograptus tentaculatus Hall, 20th Rep. New York State Cab. Nat. Hist., 1868, 

 p. 199, pi. 4, fig. 8; rev. ed., 1870. Matthew, Trans. Royal Soc. Canada, 10, 

 sec. 4, 1893, p. 100; Proc. and Trans. Royal Soc. Canada, 11, 1894, p. 114. 

 Ruedemann, New York State Pal., Ann. Rep., 1902, p. 571; Mem. New York 

 State Mus., 7, pt. 1, 1904, pp. 733, 734, pi. 16, figs. 33-35. 



Canadian: Point Levis, Quebec (Levis, Diplograptus dentatus zone); St. John, 

 New Brunswick (Bretonian, Div. C3d); Deepkill, Mount Moreno, etc., New 

 York (Deepkill, D. dentatus zone); Arkansas. 



RETIOLITES Barrande. Genotype: Graptolithus geinitzianus Barrande. 



Gladiolites Barrande, Grapt. de Boheme, 1850, p. 68 (Retiolites proposed in foot- 

 note in case Gladiolites should be considered too near Gladiolus). 





