2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 95 



Antagmus cleon (Walcott) 



Ptychoparia cleon Walcott, Smithsonian Misc. Coll., vol. 67, no. 3, p. 84, pi. 



12, fig ID, I917. 



The figured specimen is not fully characteristic of the genus, but 

 an unillustrated, better preserved cranidium in the same lot is more 

 typical. 



Occurrence same as preceding. 



Holotype.—U.S.'HM. no. 64393. 



Antagmus skapta (Walcott) 



Ptychoparia skapta Walcott, Smithsonian Misc. Coll., vol. 67, no. 3, p. 95, 

 pi. 12, fig. 9, 1917. 



Lower Cambrian, Mount Whyte ; (loc. 62w) Gog Lake, Wonder 

 Pass, Alberta. 



Holotype. — U.S.N.M. no. 64392. 



APHELASPIS Resser, 1935 



Aphelaspis wyomingensis (Miller) 



Crepicephaliis ? wyomingensis Miller, Journ. Pal., vol. 10, no. i, p. 29, pi. 8, 

 figs. 9-12, 1936. 



Upper Cambrian ; Crow Creek, 3 miles north of Tipperary, Owl 

 Creek Range, Wyoming. 



Cotypcs. — Columbia Univ. nos. 12601-3. 



ARAPAHOIA Miller, 1936 



Arapahoia ransomei (Stoyanow) 



Hespcraspis ransomei Stoyanow, Bull. Geol. Soc. Amer., vol. 47, no. 4, p. 468, 

 pi. I, figs. 6, 7, 1936. 



Upper Cambrian, Abrigo ; Whetstone Mountains, Arizona. 

 Cotypes. — Presumably Univ. Arizona. 



Arapahoia butleri (Stoyanow) 



Hesperaspis butleri Stoyanow, Bull. Geol. Soc. Amer., vol. 47, no. 4, p. 469, 

 pi. I, fig. 8, 1936. 



Occurrence same as preceding. 

 Holotype. — Presumably Univ. Arizona. 



ASAPHISCUS Meek, 1873 



Asaphiscus spathus (Mason) 



Anonwcarella ? spaiha Mason, Bull. South California Acad. Sci., vol. 34, pi. 2, 

 p. 107, pi. IS, fig. 10, 1935. 



Middle Cambrian, Cadiz ; Marble Mountains, California. 

 Holotype. — Los Angeles Mus. no. A 2471-10. 



