BRACHIOPODA. 
3 
1856. Lingula, Billings. Canadian Naturalist and Geologist. 
1856. Lingula, Emmons. American Geology. 
1857. Lingula, Cox. Geological Survey of Kentucky, vol. iii. 
1858. Lingula, Meek and Hayden. Proc. Acad. Nat. Sci. Phila. 
1858. Lingula, Shumard. Trans. St. Louis Academy of Sciences. 
1559. Lingula, Billings. Canadian Naturalist and Geologist. 
1859. Lingula, Hall. Palaeontology N. Y., vol. iii. 
1560. Lingula, Hall. Thirteenth Rept. N. Y. State Cab. Nat. Hist. 
1861. Lingula, Billings. Canadian Naturalist and Geologist. 
1862. Lingula, Hall. Fifteenth Rept. N. Y. State Cab. Nat. Hist. 
1862. Lingula, Billings. Palaeozoic Fossils, vol. i. 
1862. Lingula, White. Proc. Boston Soc. Nat. Hist. 
1863. Lingula, Hall. Sixteenth Rept. N. Y. State Cab. Nat. Hist. 
1863. Lingula, Hall. Trans. Albany Institute. 
1863. Lingula, Winchell. Proc. Acad. Nat. Sci. Phila. 
1865. Lingula, White. Proc. Boston Soc. Nat. Hist- 
1865. Lingula, Billings. Palaeozoic Fossils, vol. i. 
1866. Lingula, Billings. Catalogue Silurian Fossils Anticosti. 
1867. Lingula, Hall. Palaeontology N. Y., vol. iv. 
1868. Lingula, Meek. Trans. Chicago Academy of Sciences. 
1868. Lingula, Meek and Worthen. Geological Survey Illinois, vol. iii. 
1S69(?) Lingula, Winchell. Proc. American Philosophical Society. 
1872. Lingula, Meek. Rept. Palaeontology Eastern Nebraska. 
1873. Lingula, Hall. Twenty-third Rept. N. Y. State Cab. Nat. Hist. 
1873. Lingula, Meek and Worthen. Geological Survey Illinois, vol. v. 
1874. Lingula, Rathbun. Bull. Buffalo Soc. Nat. Hist. 
1874. Lingula, White. Wheeler’s Expl. 100th Meridian. 
1874. Lingula, Billings. Palaeozoic Fossils, vol. ii. 
1875. Lingula, Nicholson. Rept. Palaeontology Province of Ontario. 
1875. Lingula, Meek. Geological Survey Ohio ; Palaeontology, vol. ii. 
1875. Lingula, James. Cincinnati Quart. Journ. Science. 
1875. Lingula, Hall and Whitfield. Geological Survey Ohio; Palaeontology, vol. ii. 
1875. Lingula, S. A. Miller. Cincinnati Quart. Journ. Science. 
1878. Lingula, Rathbun. Proc. Boston Soc. Nat. Hist. 
1879. Lingula, Emerson. Geol. Frobisher Bay, in Nourse’s Narr. Hall’s Arctic Expedition. 
1879. Lingula, Hall. Descrip. New Spec. Fossils from the Niagara Group. 
1880. Lingula, N. H. Winchell. Geological Survey Minn., Eighth Ann. Rept. 
1880. Lingula, Whitfield. American Journal of Science. 
1881. Lingula, Hall, Eleventh Ann. Rept. State Geologist Indiana. 
1882. Lingula, Whitfield. Geology Wisconsin, vol. iv. 
1884. Lingula, H. S. Williams. Bull. No. 3, U. S. Geological Survey. 
1884. Lingula, White. Thirteenth Ann. Rept. State Geologist Indiana. 
1884. Lingula, Worthen. Bull. No. 2, Illinois State Mus. Nat. Hist. 
1884. Lingula, Walcott. Palaeontology Eureka District. 
1884. Lingula, Ringueberg. Proc. Acad. Nat. Sci. Phila. 
1885. Lingula, Clarke. Bull. No. 16, U..S. Geological Survey. 
1887. Lingula, Whiteaves. Geol. and Nat. Hist. Surv. Canada. 
1888. Lingula, Herrick. Bull. Denison Univ., vol. iv, pt. 1. 
1889. Lingula, Walcott. ' Proceedings of United States National Museum 1888. 
1889. Lingula, Nettelroth. Kentucky Fossil Shells. 
