530 Dr. H. Woochcard — M. Cambrian Fossils of the Rockies. 



"From the data mentioned I am led to conclude that the Mount 

 Stephen fauna described by Dr. Eominger should be referred to about 

 the horizon of the upper portion of the Middle Cambrian fauna. 

 This correlation, united with the discovery of the OZewei/MS-fauna 

 by Dr. George M. Dawson, in 1885, near Kicking-Horse-Pass, on 

 the line of the Canadian Pacific Eailway, leads me to think that 

 the Middle Cambrian fauna will be found to extend all along the 

 western side of the great Keweenawan continental area, from 

 Southern Nevada far into British America, and that this area will 

 be found to belong to one geologic and faunal province of the 

 Cambrian system. 



" Dr. Eominger describes the new genus Embolimus and five new 

 species of Trilobites, viz., Ogygia Klotzi, 0. serrata, Embolimus 

 spinosa, E. rotundata, and Conocephalites Cordillerce. He also 

 identifies Monocephalus Salteri ? Billings, Bathyuriis ? Agnostus 

 (compare A. integer, Barr.), and the genera OrtJiis, Obolella, 

 Ktitorgina, Leptcena? Metoptoma, and Hyolithes." 



Ogygopsis Klotzi, Eom., sp., 1887. 



Ogygia Klotzi, Eominger, 1887 : Proc. Acad. Nat. Sci. Philad., p. 12, pi. i, iig. 1. 

 Ogygia Klotzi, Walcott, 1888 : Amer. Joum. Sci. [3], vol. xxxvi, p. 166. 

 Ogygopsis Klotzi, Walcott, 1888: Proc. U.S. Nat. Mus., vol. xi, p. 446. 

 Ogygia [^Ogygopsis] Klotzi, Roem., G. F. Matthew, 1899 : Proc. & Trans. Eoy. Soc. 

 Canada [2], vol. v, p. 68. 



Fig. 1. — Ogygopsis Klotzi, Rom., sp., 1887. 

 Middle Cambrian : Momit Stephen, B.C. Two-thirds nat. size. 



This Trilobite is one of the most abundant of the species obtained 

 from the Middle Cambrian of Mount Stephen, B.C. In Mr. Whymper's 

 collection there are twenty-eight nearly complete examples and 



