TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 423 



6519. Myalina (?) swallovi McChesney. Plesiotypes. 



Upper Carboniferous. Nebraska City, Nebraska. 



Meek, Final Rept. U. S. Geol. Surv. Nebraska (Hayden), 1S72, 

 p. 201, pi. 9, figs. 7a, 7b. 



8478. Myalina ? swallovi McChesney. Plesiotype. 



Upper Carboniferous. Fort Apache, Navajo County, Ari- 

 zona. 



White, Rept. U. S. Geogr. Surv. W. 100th Merid., IV, Pt. I, 1876, 

 p. 152, pi. 11, fig. 8a. 



35308. Myalina wyomingensis L,ea. Plesiotypes. 



35309. Rico (Upper Carb.). Scotch Creek, Rico quadrangle, 



Colorado, and Graham, Young County, Texas. 



Girty, Prof. Pap. No. 16, U. S. Geol. Surv., 190^, p. 422, pi. 8, figs. 

 8-13. 



38051. Mylacris ampla Scudder. Holotype. 



Upper Coal Measures. Mazon Creek, Grundy County, 

 Illinois. 

 Scudder, Bull. No. 124, U. S. Geol. Surv., 1895, p. 45, pi. 2, fig. 1. 



38050. Mylacris antiqua Scudder. Holotype. 



Upper Coal Measures. Mazon Creek, Grundy County, 

 Illinois. 



Scudder, Mem. Boston Soc. Nat. Hist., Ill, 1884, p. 300; Foss. 

 Insects N. America, I, 1890, p. 264; Bull. 124, U. S. Geol. 

 Surv., 1895, p. 46, pi. 2, figs. 5, 6. 



38052. Mylacris carbonum Scudder. Cotypes. 



38053. Upper Coal Measures. Empire Mine, Wilkesbarre and 



Cannelton, Pennsylvania. 



Scudder, Mem. Boston Soc. Nat. Hist., Ill, 1884, p. 304, pi. 27, 

 figs. 6, 7, 10; Foss. Insects N. America, I, 1890, p. 268, pi. 

 13, figs. 6, 7, 10. 



25924. Mylacris (Dipeltis) diplodiscus Packard. Cotype and 



25925. plesiotype. 

 38864. Upper Coal Measures. Mazon Creek, Grundy County, 



Illinois. 



Packard, American Nat., XIX, 1885, p. 293; Mem. Nat. Acad. 



Sci. Ill, 1886, p. 145, pi. 5, fig. 2.— Schuchert, Proc. U. S. 



Nat. Mus., XIX, 1897, pi. 58, figs. 3, 5. — Sellards, Amer. Journ. 



Sci. (4), XV, 1903, pi. 7, fig. 8. 

 [This is now known to be the larva of a cockroach.] 



38049. Mylacris elongata Scudder. Holotype. 



Upper Coal Measures. Mazon Creek, Grundy County, 

 Illinois. 



Scudder, Bull. No. 124, U. S. Geol. Surv., 1895, p. 41, pi. 1, fig. 6. 



38054. Mylacris lucifuga Scudder. Holotype. 



Upper Coal Measures. Port Griffith Switchback, near 

 Pittston, Pennsylvania. 



Scudder, Mem. Boston Soc. Nat. Hist., Ill, 1884, p. 301, pi. 27, 

 fig. 8; Foss. Insects N. America, I, 1890, p. 265, pi. 13, fig. 8. 



