228 THE CAMBRIAN. [bull. 81. 



Lingulepis pinuaformis, Owen, p. 127, Fig. 13, f, g. 

 Obolella polita, Hall, p. 127, Fig. 13, h. 

 Orthis pepioa, Hall, p. 127, Fig. 13, i, j, k, 1. 

 Triplegia primordialis, Whitfield, p. 127, Fig. 13, m. 

 Leptajna barabuensis, Wincbell, p. 127, Fig. 13, n, o. 

 Arenicolites woodi, Whitfield, p. 128, Fig. 14, a, b. 

 Dikelocephalus sp. ?, p. 129, Fig. 15. 



lodensis, Whitfield, p. 130, Fig. 16, a, b. 



pepiueusis, Hall, p. 130, Fig. 16, c, d,e, f. 

 Aglaspis eatoni, Whitfield, p. 130, Fig. 16, g. 

 Charioeephalus whitfieldi, Hall, p. 130, Fig. 16, h. 

 Arionellns couvexus, Whitfield, p. 130, Fig. 16, i. 

 Ptyehaspis iuinuta, Whitfield, p. 130, Fig. 16, j, k. 

 llkenurus quadratus, Hall, p. 130, Fig. 16, 1, m, u, o, p. 

 Crepicephalus gibbsi, Whitfield, |>. 130, Fig. 16, q. 

 Conocephalites wisconsensis, Owen, p. 131, Fig. 17, &, b, o. 



calyinenoides, Whitlield, p. 131, Fig. 17, d. 

 Agnostus josepha, Hall, p. 131, Fig. 17, e, f. 

 Ellipsocephalus curtus, Whitfield, p. 131, Fig. 17, g. 

 Agranlos woosteri, Whitfield, p. 131, Fig. 17, h, i. 

 PempbigABpis bnllata Hall, p. 131, Fig. 17, j. 

 Climactichnitea youngi, Chamber] in, p. 132, Fig. 18. 



fosteri Chamberlin, p. 132, Fig. 18. 



The species Orthis remnichia and O. sandbergi are described in 1886 

 by Prof. N. H. Wincbell from the St. Croix sandstone. 1 



In 1890, Mr. O D. Walcott described the following species from the 

 Upper Cambrian of Wisconsin and Minnesota : 2 



Metoptoma? minneiskensis, p. 267. 



1 peracuta, p. 267. 

 Conularia cambria, p. 270. 

 Spirodeutalinm, n. gen., p. 271. 

 Spirodentalium osceola, p. 271. 

 Ptyehoparia counata, p. 272. 



pero, p. 274. 

 Agraulos ? thea, p. 277. 



RED SANDSTONE OF LAKE SUPERIOR. 



On PI. I C and n, Figs. 1 and 2 of the illustrations in the Geological 

 Report of Wisconsin, Iowa, and Minnesota, 1852, Dr. D. D. Owen fig- 

 ures certain markings he observed on sandstones from the northwest 

 shore of Lake Superior. He considered they probably indicated the 

 remains of fossil sea-weeds or fucoids. 



There is a specimen in the collections of the National Museum, la- 

 beled " Plants of Lake Superior, D. D. Owen." The specimen looks 

 very much like the sandstones of the interior of Wisconsin, and is cov- 

 ered with casts of annelid trails, more or less crushed and matted down, 

 which gives a resemblance to fucoius. Of traces of life other than that 

 of annelid trails and borings nothing has to my knowledge been made 

 known to the scientific world. 



1 New species of fossils. 14th Ann. Rep. Minn. Geol. Nat. Hist. Surv., 1886, pp. 317-318. 



* Description of now forms of Upper Cambrian fossils. U. S. Nat. Mus. Proc., vol. 13, 1800, pp. 267-279, 



