1896.] -^4:1 [Smith. 



hastatn, it is an example of one species ranging from the Devonian up 

 into the Permian. Tliis species ranges tlirougli the Coal Measures in 

 Nebraska, Kansas, Illinois, Texas, New Mexico, etc. It is very com- 

 mon in the Upper Coal Measures of Poteau mountain, Indian Territory, 

 and was also found in the Fayetteville shale, Lower Carboniferous, pi-ob- 

 ably Warsaw, of Independence county, 13 N., 6 W., section 18, southeast 

 corner, near Mooretield ; also in the Lower Coal Measures of Conway 

 county, 8 N., 17 W., section 33, northeast quarter of northeast quarter. 



Genus Athyris, McCoy. Athyris suhtilita Hall. Terebratula suhtilita 

 Hall, Stansbitry' s Exjyl.Gt. Salt Lake, p. 409. AtJii/ris si/htilifa Hall, 

 sp., F. B. Meek, U. S. Geol. Surv. Nehraska, p, 180, PI. i, Fig. 12, 

 PI. viii. Fig. 4. 



This species is found nearly all over the world in the Coal Measures. 

 It is also found in various places in the Lower Carboniferous, as in Eng- 

 land and India 



It was found to occur frequently in the Upper Coal Measures of Se- 

 bastian county, 8 N., 32 W., section 12, and of Poteau mountain, Indian 

 Tei'ritory ; in the Boone Chert, Burlington or lower Keokuk, of Stone 

 county, 14 N., 10 W., section 9, northwest quarter. 



Marcy (Expl. Bed River of Louisiana, p. 189) cites Athyris subtilita 

 from the Subcarboniferous limestone of Washington county. 



Genus Retzia, King. Retzia radialis Phillips. Terrehratula mormonii 

 Marcou, Oeol. N. Amer., p. 51, PI. vi. Fig. 1. Retzia punctilifera 

 Shuniard, Trans. St. Louis Ac. Set., i, p. 220. Retzia suhglohosa. 

 McChesney, New Pal. Foss., p. 45, PI. i, Fig. 1. Retzia compressa 

 Meek, Pal. Calif., i, p 14, PI. ii. Fig. 7. 



R. radialis is common in the Western Coal Measures and Lower Car- 

 boniferous ; it was found in great numbers in the Upper Coal Measures 

 of Sebastian county, 8 N., 32 W., section 12, and of Poteau mountain, 

 Indian Territorj-. 



Genus Spiripetj, Sowerby. Spirifer earner atus Morton, Am. Journ. Sc, 

 Vol. xxix, p. 150. Spirifer meusibachianus Rcemer, Kreidebildung 

 lion Texas, p. 88. Spirifer triplicatus Hall, Stansbury's Expl. Ot. 

 Salt Lake, p. 410. Spirifer cameratus Morton, C. A. White, U. S. 

 Expl. W. of 100th Merid., iv, p. 132, PI. x, Fig. 1. 



This species is distributed throughout the Coal Measures from Penn- 

 sylvania and West Virginia to Arizona ; it is also found in the Permo- 

 Carboniferous of Kansas ; * Meek, in Oeol. Exp)l. 4.0 Parallel, iv, p. 8, 

 cites the species from the Upper Carboniferous of the White Pine 

 Mining district of Nevada. It was found in great numbers in the 

 Upper Coal Measures of Sebastian county, 8 N., 32 W., section 12, and 

 of Poteau mountain, Indian Territory ; also in the Lower Coal Measures 

 * F. B. Meek, V. S. Geol. Surv. Nebraska, p. 184. 



PROC. AMEK. PHILOS. SOC. XXXV. 152. 2 E. PRINTED DEC 9, 1896. 



