214 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Cheirurus hydei (Weller). 



Ceraiirus hydei Weller, Bull. Chicago Acad. Sci,, Nat. Hist. Surv., 4, pt. 2, 1907, 



p. 264, pi. 24, fig. 22. 

 Cheirurus hydei Raymond and Barton, Bull. Mus. Comp. Zool., 54, 1913, p. 542 



(gen. ref.) 

 Niagaran (Racine): Near Lemont, Illinois. 



Cheirurus Icarus Billings. See C'eraurinua ioarus. 



Cheirurus mars Hudson. See Nieszkowskia mars. 



Cheirurus mercurius Billings. See Pseudosphterexophus mercurius. 



Cheirurus niagareiisls (Hall). 



Ceraurus insignis Hall (not Beyrich), Pal. New York, 2, 1852, pp. :W0, 303, pi. 



66A, fig. 4; pi. 67, figs. 9, 10; Geol. Surv. Wisconsin, 1, 1862, p. 433; adv. 



sheets 18th Rep. New York State Cab. Nat. Hist., 1865, p. 31; 20th Rep. 



New York State Cab. Nat. Hist., 1867, p. 335. 

 Ceraurus bimucronatus Roemer (not Mirrchison), Sil. Fauna West Tennessee, 



1860, p. 80, pi. 5, fig. 19. 

 Sphserexochus romingeri? Hall, 28th Rep. New York State Mus. Nat. Hist., doc. 



ed., 1877, pi. 32, fig. 16. 

 Ceraurus niagarensis Hall, 20th Rep. New York State Cab. Nat. Hist., 1867, p. 



376, pi. 21, figs. 10, 11; rev. ed. 1870, p. 427, pi. 21, figs. 10, 11; llth Rep. 



Dep. Geol. Nat. Hist. Surv. Indiana, 1882, p. 335, pi. 34, fig. 16; pi. 33, fig. 



10. — Chamberlin, Geol. Wisconsin, 1, 1883, p. 195, fig. — Whiteaves, Geol. 



Surv. Canada, Pal. Foss., 3, pt. 1, 1884, p. 42; pt. 2, 1895, p. 107.— Van 



Ingen, School of Mines Quart., 23, 1901, p. 35. — Weller, Bull. Chicago Acad. 



Sci., Nat. Hist. Surv., 4, pt. 2, 1907, p. 263, pi. 24, figs. 20-21. 

 Ceraurus (Cheirurus) niagarensis Hall, 28th Rep. New York State Mus. Nat. 



Hist., mus. ed., 1879, p. 189, pi. 32, fig. 16. 

 Ceram'us (Crotalocephalus) niagarensis Kindle, 28th Ann. Rep. T>ep. Geol. Nat. 



Res. Indiana, 1904, p. 483, pi. 23, figs. 1-2; pi. 24, fig. 8.— Gra)>au and Shimer, 



N. A. Index Fossils, 2, 1910, p. 319, fig. 16.33. 

 Cheirurus niagarensis Raymond and Barton, Bull. Mus. Comp. Zool., 54, 1913, p. 



542 (gen. ref.). 

 Niagaran (Rochester to Guelph): Rochester, etc., New York; Ontario; Indiana; 



Tennessee; Wiscon.sin; Illinois; etc. 



Cheirurus numitor Billings. See Ceraurus luuuitor. 



Cheiruru.s niipenis Billings. 



Cheirurus nuperus Billings, Cat. Sil. Fossils Anticosti, Geol. Surv. Canada, 1866, 



p. 60, fig. 20. 

 Ceraurus nuperus Miller, N. A. Geol. Pal., 1889, p. 638 (gen. ref.). 

 Anticostian (Gun River — Chicotte): East Point, etc., Anticosti. 



Cheirurus perforator Billings. See Nieszkowskia perforator. 



Cheirurus pleurexanthemus Billings. See Ceraurus ])leurexanthemus. 



Cheirurus polydohus Billings. See Cerauriiuis jiolydorus. 



Cheirurus pompilius Billings. See Ceraurinus pompilius. 



Cheirurus prolipicus Billings. See Pseud osphajrexochus vulcanus. 



Cheirurus satyrus Billings. See Nieszkowskia satyrus. 



