28 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 



Elrathia haguei (Hall and Whitfield) 



Crepicephalus (Loganellus) haguei Hall and Whitfield, U. S. Geol. Expl. 40th 



Parallel, vol. 4, p. 210, pi. 2, figs. 14, 15, 1877. 

 Ptychoparia haguei Walcott, U. S. Geol. Surv. Bull. 10, p. 36, pi. 6, fig. 6, 1884. 



Species must be confined to the locality given below. 

 Middle Cambrian, Eldorado ; Pogonip Mountain, White Pine Dis- 

 trict, Nevada. 



Holotype. — U.S.N.M. no. 24660. 



EUREKIA Walcott, 1924 



Eurekia Walcott, Smithsonian Misc. Coll., vol. 75, no. 2, p. 56, 1924; idem, no. 3, 

 p. 90, 1925. 



Genotype. — E. granulosa Walcott. 

 Range. — Late Upper Cambrian. 

 Previously the genus contained five species : 



Eurekia granulosa Walcott Eurekia eos (Hall) 



Eurekia angustifrons (Walcott) Eurekia binodosa (Hall) 



Eurekia dissimilis (Walcott) 



ADDITIONAL SPECIES REFERRED TO EUREKIA 



Eurekia denticulata (Meek) 



Proetus (Phaeton) dcnticulatus Meek, Rep. U. S. Geol. Expl. 40th Parallel, 

 vol. 4, pt. I, p. 49, pi. I, fig. 10, 1877. 



Originally assigned to the Devonian. 



Upper Cambrian, Hamburg ; drift west side of Steptoe Valley, 

 Nevada (float). 

 Holotype. — U.S.N.M. no. 14579. 



Eurekia finkelnburgi (Clark) 



Bayfieldia finkelnburgi Clark, Bull. Amer. Pal., vol. 10, no. 41, p. 32, pi. 4, 

 fig. 7, 1924. 



Upper Cambrian, Norwalk sandstone ; Osceola Mills, Wisconsin, 

 Holotype. — M.C.Z. no. 1712. 



ETERASPIS, n. gen. 



Diagnosis. — Cranidium strongly arched longitudinally. Glabella 

 poorly defined ; without furrows. Neck ring thickened ; occipital fur- 

 row very shallow. Brim about one-third length of glabella ; wide riin 

 separated by shallow anterior furrow. Eyes moderate in size and 

 moderately bowed, situated about middle of cranidiuin. 



