TYI'K SPECIMENS OK INVERTEBRATE FOSSILS. 423 



6519. Myalina (?) swallovi McChesney. Plesiotypes. 



llpper Carboniferous. Nebraska City, Nebraska. 



INIeek, Final Rept. V. S. Geol. .Siirv. Nebraska (HaN-den), 1872, 

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



8478. Myalina ? swallovi McChesney. Plesiotype. 



Upper Carl)oniferous. Fort Apache, Navajo County, Ari- 

 zona. 



\VhilL\ Rept. r. vS. Geogr. Surv. W. Jootli INIerid., IV, Pt. I, 1876, 

 ]). 152, pi. II, fig. Sa. 



35308. Myalina wyomingensis Lea. Plesiotypes. 



35309. Rico (Upper Carb.). Scotch Creek, Rico quadranj^le, 



Colorado, and Graham, Young County, Texas. 



Girtv, Prof. Pap. No. 16, U. S. Geol. Surv., 191)^, ]). 422, pi. 8, figs. 

 8-13. 



38051. Mylacris ampla Scudder. Holotype. 



Upper Coal Measures. Mazon Creek, Grundy County, 

 Illinois. 

 vScudder, Bull. No. 124, U. S. Geol. vSurv., 1895, p. 45, pi. 2, fig. i. 



38050. Mylacris antiqua Scudder. Holotype. 



llpper Coal Measures. Mazon Creek, Gnuidy Count>-, 

 Illinois. 



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

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

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



38052. Mylacris carbonum vScudder. Cotypes. 



38053. Upi)er Coal Measures. Knipire Mine, Wilkesbarre and 



Cannelton, Pennsylvania. 



Scudder, Mem. Boston vSoc. Nat. Hi.st., 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 Meastires. Mazon Creek, Grundy County, 

 Illinois. 

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



38054. Mylacris lucifuga Scudder. Holotj-pe. 



Upper Coal Measures. Port Griffith Switchback, near 

 Pittston, Peiuisylvania. 



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. 



