75U PROCEEDINdS OF THE NATIONAL MUSEUM. vol. xxix. 



(ARCHIMYLACRIDiE) EXILIS (Scudder). 



Etublattinai'xIlisScvDDER, Bull. U. R. Genl. Surv., No. 101, 1893, p. 17, pi. ii, fiir. e; 

 No. 124, 1895, p. 101, pi. ix, fig. 1. 



Loatllf//. — Ea.st Providence, Rhode Island. Pennsylvaniun; Ten- 

 mile series; Alle^'hen}^ or Conemaiigh stage. 



(ARCHIMYLACRID^) SEPULTA (Scudder). 



Blaftiiia scjinlta Scudder, Proc. Aiuer. Assoc, XXIV, B, 1876, ]>. Ill, fig. 'I. 

 Petrab/attiiia sepulta Scudder, Mem. Boston Soc, III, 1879, p. 125, pi. vi, fig. 7. 



Locality. — Sydney, Cape Breton. Middle Coal formation; ( Alle- 

 gheny stage. 



(ARCHIMYLACRID.(E) MEIERI (Scudder). 



Petrahlattina ineieri Scudder, Proc. Acad. Nat. Sci. Phila., 1885, p. 38; Mein. 



Boston Soc, IV, 1890, p. 465, pi. xlii, fig. 17. 

 Por oblattina meieri ScvDDKR, Bull. U. S. Geol. Surv., No. 124, 1895, p. 138. 



Locality. — Fairplay, Colorado. Lower Permian. 



(ARCHIMYLACRIDiE) PERITA (Scudder). 



Gerablattiiia perHd. '!>cvi)i>ER, Bull. U. S. Geol. Surv., N(j 124, 1895, p. 114, pi. ix, 

 fig. 17. 



Locality. — Cassville, West Virginia. Dunkard formation; Lower 

 Permian. 



JJolotype.^C'dt. No. 8S(M>1, U.S.N M. 



(ARCHIMYLACRIDyE) INCULTA (Scudder). 



Gcrab/attiiKi Incultd Scudder, Bull. U. S. Geol. Surv., No. 124, 1895, p. 113, i)l. 

 IX, fig. 16. 



Locality. — Cassville, West Virginia. Dunkard formation; Lower 

 Permian. 



Rolotype.—Q^t. No. 38173, U.S.N.M. 



(ARCHIMYLACRIDvE) JEFFERSONIANA (Scudder). 



Etoblattinu jeff'ersoniana Scudder, Bull. U. S. Geol. Surv., No. 124, 1895, i>. 77, i>l. 

 V, fig. 7.' 



Locality. — Richmond, Ohio. Conemaugh formation; shales above 

 the Ames limestone. 



PETRABLATTINA ^QUA Scudder. 



Pefrablattina ;v<iua ScummTi,Froc. Acad. Nat. Sci. Phila., 1885, j). 38; Mem. Boston 

 Soc, IV, 1890, p. 465, pi. xlii, fig. 13. 



Locality. — Fairplay, Colorado. Lower Permian. 



This unfortunately very imperfectly preserved form must be recog- 

 nized as the type of the genus Petrahlattina; it appears to be closely 

 related to Phylohlatta. 



