28 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 97 



Upper Cambrian, Pilgrim; (loc. 151b) between Pebble and Soda 

 Butte Creeks, Yellowstone National Park, Wyoming. 

 Holotype.—U. S.N. M. no. 96488. 



BRISCOIA Walcott, 1924 



Briscoia texana (Walcott) 



Dikclflccphaliis tcxainis Walcott, Smithsonian Misc. Coll., vol. 57, no. 13, 

 p. 372, pi. 65, fig. 4, 1914. 



Upper Cambrian, Wilberns ; (loc. 70a) Baldy Mountain, near 

 Morgans Creek, 8 miles northwest of Burnet, Texas. 

 Holotype.—U.S.'N.M. no. 58621. 



CHARIOCEPHALUS Hall, 1863 



Charioccphalus Hall, i6th Ann. Rep. New York State Cab. Nat. Hist., p. 175, 



1863. 

 Dartonaspis Miller, Journ. Pal., vol. 10, no. i, p. 29, 1936. 



Miller failed to observe that the criteria on which he based Dar- 

 tonaspis are exactly those which led to the separation of Irvingella 

 from Charioccphalus. These relationships are discussed under 

 Irvingella. 



Charioccphalus knighti (Miller) 



Dartonaspis knighti Miller, Journ. Pal., vol. 10, no. i, p. 29, pi. 8, figs. 34, 35, 

 1936. 



Upper Cambrian, Boysen; Bull Lake Creek, Wind River Range, 

 Wyoming. 



Holotype. — Columbia Univ. no. 12626. 



CLEVELANDELLA Resser, 1938 



Clevelandella volux (Walcott) 



Saratogia voliix Walcott, Smithsonian Misc. Coll., vol. 64, no. 3, p. 198, 

 pi. 35, figs. 2, 2a, 1916. 



Upper Cambrian, Eau Claire; (loc. 78a) Eau Claire, Wisconsin. 

 Holotype— U.S. N.'U. no. 61 714. 



CHUANGIA Walcott, 191 1 



Chuangia sunt, n. sp. 



Chuangia batia Sun, Pal. Sinica, ser. b, vol. i, fasc. 4, p. 58, pi. 4, figs. 4a-e, 

 1924. 



This species is narrower than C. batia. The eyes are situated 

 somewhat more forward and are perhaps a little larger. The species 



