14 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 97 



'ihis species is common in the Spencc shale. 



Middle Cambrian, Lakeview; near Lakevievv, I'end Oreille Lake, 

 Idaho. 



Localities 55c and 5g. 



Plesiotypcs. — U.S.N.M. nos. 96503-4. 



ORYCTOCARE Walcott, 1908 



ORYCTOCARE GEIKEI Walcott 



Plate 2, figs. 22, 23 



Oryctocarc yclkci Walcott, Smithsonian Misc. Coll., vol. 53, no. 2, p. 23, pi. i, 

 figs. 9, 10, 1908. 



No additional specimens of this rare trilobite were found when 

 the thousands of specimens from the locality were again examined. 

 The mistaken reference of this species to Oryctoccphalus and Utia 

 in the Lakeview limestone of Pend Oreille Lake, Idaho, has been 

 adjusted elsewhere. 



Locality 55c. Lakeview ; near Lakeview, Pend Oreille Lake, Idaho. 



Lectotype and paratypcs. — U.S.N.M. nos. 53426-28. 



LEIOSTEGIDAE Bradley 



OLENOIDES Meek, 1877 



OLENOIDES WAHSATCHENSIS (Hall and Whitfield) 



Plate 4, figs. I, 2 



Dikellocephalus ivahsatchcnsis Hall and Whitfield, U. S. Geol. Expl. 40th 



Par., vol. 4> P- 241, pi. i, fig. 35. 1877. 

 Dikellocephalus ? gothicus Hall and Whitfield, U. S. Geol. Expl. 40th Par., 



vol. 4, p. 242, pi. I, fig. s6, 1877. 

 Olenoides zvahsatchensis Walcott, U. S. Geol. Surv. Bull. 30, p. 189, pi. 29, 



figs. 2, 2a, 1886. 



Locality 20x. 



Cotypes. — U.S.N.M. no. 15447. 



OLENOIDES BRIGHAMENSIS, n. sp. 



Plate 3, figs. 8, 9 



This is a small species associated with EhmanicUa and differs from 

 the other two Wasatch species in several respects. The cranidium 

 does not depart from the norm, and is rather highly arched in both 

 directions. The pygidium has six pairs of marginal spines which are 

 rather short. 



Locality 20x, 



Holotype and paratype. — U.S.N.M. no. 96513. 



