278 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Cornulites arcuatus Conrad. 



Cornulites arcuatus Conrad, Jour. Acad. Nat. Sci. Philadelphia, 8, 1842, p. 276, 

 pi. 17, fig. 8. Hall, Nat. Hist. New York, Geol., 4, 1843, p. 109, fig. 3; p. 110; 

 tab. ill. 16, fig. 3. Emmons, Man. Geol., 1860, p. 108, fig. 98. Hall, Pal. 

 New York, 7, Sup., 1888, p. 19, pi. 116A, fig. 9. Miller, N. A. Geol. Pal., 

 1889, p. 518, fig. 937. Clarke and Ruedemann, Mem. New York State Mus., 

 5, 1903, p. 105, pi. 4, figs. 1-5. Grabau, Michigan Geol. Surv., Geol. Ser., 1, 



1909, p. 201, pi. 22, figs. 4-6. Grabau and Shinier, N. A. Index Fossils, 2, 



1910, p. 239, fig. 1524. 



Silurian (Lockport-Guelph, Cobleskill): Albion, Orleans County, etc., New 



York. 

 Upper Monroan (Amherstburg): Detroit River, opposite Amherstburg, Ontario. 



Cornulites bellistriatus Hall. 



Cornulites - Hall, Pal. New York, 2, 1852, p. 353, pi. 85, figs. 12-17. 

 Cornulites bellistriatus Hall, Pal. New York, 7, Sup., 1888, p. 20, pi. 116A, figs. 



12,13. Grabau, Bull. Buffalo Soc. Nat. Sci., 7, 1901, p. 161, fig. 56; Bull. 



New York State Mus., 45, 9, 1901, p. 161, fig. 56. Grabau and Shimer, N. A. 



Index Fossils, 2, 1910, p. 238, fig. 1523. 

 Clinton (Rochester): Western New York; Ontario. 



Cornulites clngulatus Hall. 



Cornulites cingulatus Hall, Pal. New York, 7, 1888, p. 20 (supplement to 5), pi. 

 114, fig. 29. Clarke, Mem. New York State Mus., 3, No. 3, 1900, p. 27, pi. 2, 

 figs. 35-38. Weller, Geol. Surv. New Jersey Pal., 3, 1903, p. 272, pi. 32, 

 fig. 3. Ohern, Maryland Geol. Surv., Low. Dev., 1913, p. 258, pi. 40, fig. 16. 



Helderbergian: New York (New Scotland); Pinto, Maryland (Keyser); New 

 Jersey. Also Oriskany of New York. 



Cornulites clintoni Hall. 



Cornulites flexuosus Hall (not Hall, 1847), Pal. New York, 2, 1852, p. 98, pi. 28, 



fig. 12a-e; 5, pt. 2, 1879, p. 156, footnote; 28th Rep. New York State Mus. 



Nat. Hist., mus. ed., 1879, p. 184. 

 Cornulites clintoni Hall, llth Ann. Rep. Indiana Dep. Geol. Nat. Hist., 1882, p. 



330; Pal. New York, 7, Sup., 1888, p. 18, pi. 116, fig. 22; pi. 116A, fig. 9. 



Foerste, Jour. Cincinnati Soc. Nat. Hist., 21, 1909, p. 10. 

 Cornulites serpularius var. clintoni Foerste, Proc. Boston Soc. Nat. Hist., 24, 



1889, p. 274, pi. 5, fig. 8, pi. 7, fig. 8. 

 Clinton: Lockport, etc., New York; Hamilton, etc., Ontario (Irondequoit and 



Rochester); Lewis County, Kentucky. 



Cornulites clintoni gracilis (Hall). 



Cornulites flexuosus var. gracilis Hall, Canadian Nat. GecL, 5, 1860, p. 155. 



Dawson, Acadian Geol., 2d ed., 1868, p. 606. 

 Silurian: Arisaig, Nova Scotia. 



Cornulites conicus (Nicholson). 



Ortonia conica Nicholson, Geol. Mag., 9, 1872, pp. 447, 448, fig. 1; Rep. 42d Meet 

 Brit. Assoc. Adv. Sci., Notes and Abstracts, 1873, p. 119. Miller, Cincini 

 Quart. Jour. Sci., 1, 1874, p. 11, fig. 4. Hall, Pal. New York, 7, Sup., 

 p. 17, pis. 115, fig. 27; 116A, figs. 15, 16. 



Maysville: Cincinnati, Ohio, and vicinity. 



Cornulites contractus Ringueberg. 



Cornulites contractus Ringueberg, Proc. Acad. Nat. Sci. Philadelphia, 1884, 



148, pi. 3, fig. C. 

 Clinton (Rochester): Lockport, New York. 



