36 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 



Idahoia hera (Walcott) 



Saratogia hcra Walcott, Smithsonian Misc. Coll., vol. 64, no. 3, p. 197, pi. 35, 

 figs. 3-3^, 1916. 



Upper Cambrian, Franconia ; Marine Mills, Minnesota. 

 Cotypes. — U.S.N.M. nos. 61715-6. 



INGLEFIELDIA Poulsen, 1927 



Inglefieldia Poulsen, Meddels. Grjzfnland, vol. 70, p. 261, 1927. 



This genus is closely allied to Kochiella, differing chiefly in having 

 a wider rim and lacking the doublure impression. The rim in turn 

 has the backward expansion opposite the center of the glabella. 

 Pygidium unknown. 



Genotype. — /. porosa Poulsen. 



Range. — Upper portion of Lower Cambrian. At present no Middle 

 Cambrian species have been determined. 



Ingleiieldia porosa Poulsen scribed as Chancia 



Inglefieldia planilimbata Poulsen Inglefieldia thia Poulsen (not Wal- 



Inglefieldia groenlandica Poulsen cott's species) 



Inglefieldia inconspicua Poulsen Inglefieldia ajfinis Poulsen =:: new 



Inglefieldia discreta Poulsen genus. 



Inglefieldia venulosa (Poulsen), de- 



KOCHASPIS, n. gen. 



Numerous species referred to several genera, particularly to Crepi- 

 ccphalus, when the pygidia were known, appear to be closely allied to 

 Kochiella. 



Diagnosis. — Cranidium wide. Glabella wide, tapering, clearly de- 

 fined, with two or more pairs of furrows. Brim wide, divided into 

 two subequal parts by anterior furrow which is shallow in the center ; 

 rim clearly defined. Fixed cheeks two-thirds width of glabella ; eye 

 lines heavy ; eyes rather small, situated at about the mid point of 

 cranidium. Free cheeks extended into long genal spines. 



Pygidium with large prominent axis. Pleural furrows strong ; 

 pleural lobes drawn out into spines. 



Surface granulose, lined or both. 



Genotype. — Crepicephaliis liliana Walcott. 



Range. — Late Lower and Middle Cambrian. 



DESCRIBED SPECIES REFERRED TO KOCHASPIS 



Kochaspis liliana (Walcott) 



Crepicephaliis liliana Walcott (part), U. S. Geol. Surv. 30, p. 207, pi. 28, 

 figs. 3, 2,a, 1886. (Not 2,b, 3c == K. highlandensts) ; loth Ann. Rep. U. S. 

 Geol. Surv., p. 653, pi. 96, figs. 7, 7a, 1890; Smithsonian Misc. Coll., 

 vol. 64, no. 3, p. 209, pi. 29, figs. 5, 5a, 1916. 



