WORMS. M. Brachiopoda. 217 



TROWBKIDGE, S. H. Remarks on the classification and distribution of Producti. 

 Proc. Amer. Assoc.for Adv. of Sci. (Cincinnati). Vol. xxx. pp. 193204, 1881 (1882). 



[1819 



UHLIG, V. Ueber die liassische Brachiopodenfauna von Sospirolo bei Belluno. 

 52 pp. (5 pi.) 8vo. Wien, 1880. [1820 



WALKER, J. F. On some New Terebratulidas from Upware. Geol. Mag. Vol. iv. 

 pp. 454 456, 1867. (1 pi.) [1821 



WALKER, J. F. On the Species of Brachiopoda which occur in the Lower Green- 

 sand at Upware. Geol. Mag. Vol. v. pp. 399407, 1868. (2 pi.) [1822 



WALKER, J. F. On Secondary Species of Brachiopoda. Geol. Mag. Vol. vn. 

 pp. 560564, 1870. (1 pi.) [1823 



WALKER, J. J. On Terebratula Morieri in England. Geol. Mag. Dec. n. Vol. 

 v. pp. 552556, 1878. [1824 



WHITE, C. A., and E. P. WHITFIELD. [New species of Brachiopoda from Burling- 

 ton, Iowa, horizon of the Chemung group of New York.] Proc. Boston Nat. Hist. 

 Soc. Vol. vm. pp. 292295, 1862. [1825 



WHITE, C. A. Note on the occurrence of Productus giganteus in California. 

 Proc. U. S. Nat. Mus. Vol. in. pp. 46, 47, 1880. [1826 



WHITE, C. A. Note on Acrothele. Proc. U. S. Nat. Mus. Vol. in. p. 47, 1880. 



[1827 



WHITE, C. A. Note on the occurrence of Stricklandinia Salteri and S. David- 

 sonii in Georgia. Proc. U. S. Nat. Mus. Vol. in. pp. 48, 49, 1880. [1828 



WHITE, C. A., and 0. H. ST JOHN. Descriptions of new Subcarboniferous and 

 Coal Measure Fossils collected upon the Geological Survey of Iowa ; together with a 

 notice of new generic characters observed in two species of Brachiopods. Trans. 

 Chicago Acad. Sci. Vol. i. pp. 115127. 10 woodcuts. 1869. [1829 



WHITEAVES, J. F. On some Primordial Fossils from South-eastern Newfoundland. 

 (Lingulella Billingsiana, n. sp.) Amer. Journ. of Sci. and Arts, Ser. 3, Vol. xvi. 

 pp. 224226, 1878. [1830 



WHITEAVES, J. F. Occurrence of Siphonotreta scotica in the Utica Formation 

 near Ottawa, Ontario. Amer. Journ. of Sci. and Arts, Ser. 3, Vol. xxrv. pp. 278, 279, 

 1882. [1831 



WHITFIELD, E. P. Observations on the internal appendages of the genus A trypa, 

 with a notice of discovery of a loop connecting the spiral cones. 20th Ann. Rep. 

 Regents Univ. N. Y. on Condition of State Cabinet, pp. 141 144. (1 pi.) 1868. 



[1832 



WHITFIELD, E. P. Descriptions of new Fossils. Capt. Ludlow's Report on tlie 

 Black Hills of Dakota, pp. 103, 104. (1 pi.) 1875. [1833 



WHITFIELD, E. P. On the occurrence of true Lingula in the Trenton Lime- 

 stones. (2 fig.) Amer. Journ. of Sci. and Arts, Ser. 3, Vol. xix. pp. 472475, 1880. 



WILLIAMS, H. S. Abstract of some Palaeontological studies of the Life History of 

 Spirifer lavis, H. Amer. Journ. of Sci. and Arts, Ser. 3, Vol. xx. pp. 456460, 

 1880. [1835 



WILLIAMS, H. S. Der genetische Zusammenhang einer Spiriferengruppe. Kosmos, 

 iv. Jahrg. 12 Heft. pp. 473-475, 1881. [1836 



WINCHELL, ALEX. Descriptions of Fossils from the Marshall and Huron Groups 

 of Michigan (Brachiopoda, etc.) Proc. Acad. Nat. Sci. Philadelphia, 1862, pp. 405 

 -430, (1863). [1837 



YOUNG, J. Notes on the genus Lingula, and its occurrence in carboniferous 

 strata around Glasgow. College Miscellany, No. 7, Glasgow, Ap. 17, 1863. [1838 



YOUNG, J. Notes on the occurrence and range of Lingula in the carboniferous 

 series of the West of Scotland. Trans. Geol. Soc. Glasgow, Vol. n. p. 144, 1866. 



[1839 



YOUNG, J. On Brachiopoda from the Silurian strata, Girvan. Proc. Nat. Hist. 

 Glasgow, Vol. n. p. 21, 1870. [1840 



