220 PALEONTOLOGY OF THE EUREKA DISTRICT. 



stratum, in association with Spirifera negleda and other Lower Carboniferous 

 fossils, Eureka District, Nevada. 



Specimens of S. cuspidatus have recently been received (1884) from 

 the Lower Carboniferous limestone in the Little Belt range of mountains 

 near Clendenin, Montana. 



Genus RETZIA King. 



Retzia radialis Phillips (Sp.). 



Plate vii, figs. 5, 5a-h. 



Terebratula radialis Phillips, 1836. Geol. Yorkshire, vol. ii, p. 223, pi. xii, figs. 4.0, 41. 

 manticee De Koirinck, 1843. Anm. Foss., p. 287, pi. xix, figs. 4o-d. (Not 



T. manticB of Sowerby.) 



Atrypa radialis McCoy, 1844. Syn. Garb. Foss. Ireland, p. 156. 

 Terebratula radialis De V. & De K., 1845. Russia and the Ural Mountains, vol. ii, p. 



89, pi. x, figs. 9, b. 



Retzia radialis Morris, 1854. Cat. Brit. Foss., p. 145. 

 Spirigerina ? radialis McCoy, 1855. Brit. Pal. Foss., p. 438. 

 Terebratula Mormoni Marcou. Geol. North America, p. 51, pi. vi, figs, llo-c. 

 Retzia punctilifera Shutnard, 1858. Trans. St. Louis Acad. Sci., vol. i, p. 220. 



Mormoni Meek & Hayden, 1859. Proc. Acad. Nat. Sci. Philad., vol. xi, p. 27 ; 



Geinitz, 1864. Carb. und Dyas in Neb., p. 39, tab. iii, fig. 6. 

 snbglobosa McChesney, 1860. Descriptions New Pal. Fossils, p. 45, and pi. i, 



fig. 1. Illustrations of same, 1865. 

 radialis Davidson, 1861. Mon. Brit. Carb. Brachiopoda, pp. 87, 218, pi.' xvii, 



figs. 19-21; pi. Ii, figs. 4-9. 

 radialis Phillips, (sp.), var. yrandicosta Davidson, 1861. Carb. Brach. Coll. in 



India, Quart. Jour. Geol. Soc., vol. xviii, p. 28, pi. i, fig. 5. 

 compressa Meek, 1864. Geol. Surv. California, Pal., vol. i, p. 14, figs. 7 a-c. 



Kayser, 1882. Riehtbofen, China, vol. iv, p. 176, tab. xxii, figs. 1-4. 

 punctulifera McChesney, 1867. Trans. Chicago Acad. Sci., vol. i, p. 32, pi. i, 



fig. 1. 

 punctulifera Meek, 1872. U. S. Geol. Surv. Nebraska, p. 181, pi. i, fig. 13, pi. 



v, tig. 8. 

 Mormoni White, 1875. Expl. and Surv. West ^OOth Merid., vol. iv, pt. 1, p. 



141, pi. x, figs. 7 a-c. 



Compare Retzia Marcyi Shumard, 1854, Expl. Red River of Louisiana, p. 190, pt. l,fig. 

 4a, b; also, Retzia VerncnUlana and R. vera Hall, Geol. Surv. Iowa, vol. 

 i, pt. 2, pp. 657, 704, 1858. 



On bringing together a series of specimens of this species from Ne- 

 vada and New Mexico it became at once apparent that it was very 



