435 



Myla. 



(•ombining as it does the eyeholes of Cephalaspis with a nosehole 

 of Bothriolepis between the eyeholes, and divided into two by 

 a narrow^ bridge. — XIII. Note. Prof. Cope was good enough 

 to send me this figure to insert here. On the same pages of 

 the Am. Naturalist the reader may find a figure of Whiteaves' 

 Bothriolepis canadensis for comparison. 



Mylacris anthracophilum.* Scudder. A cockroach wing 



yj f f .ujsjj'! " mKix^^^m m mmmM.^ ^^ ^^^ Ooal ago, found in the 



Illinois Mazon Creek coal mea- 

 sure nodules at Colchester. 

 Geol. Surv. 111. Vol. 3, 1868, p. 

 368-570, f. 5, 6. ZittePs Hand- 

 buch der Palaeontologie, 1885, 

 Vol. 2, p. 754, fig. 930, natural 

 Fi« 930. gi2e. (Compare Lithomyla- 



crisangustum,* Scudder,from Pittston,Pa.) — Coalmeasures, 



XIII 



Mylacris antiquum,* Scudder. An insect from Mazon 

 Creek, 111. Mem. Boston S. N. H., Vol. 3, 1884, p. 300. In Lacoe's 

 collection at Pittston, Pa. Coal ineasures^ XIII 



Mylacris bretonense,"^ Scud. {Blattina hretonense. Scud 

 Ganad. Nat. [2] Vol. 7, p. 271, fig. 1) Mem. Post. S. N. H. 

 Vol. 3, 1879, p. 41, pi. 5, fig. 1. From the Coal measures of 

 Sydney, C. Breton.— X///.^ 



Mylacris carbonum. Scudder. Mem. Bost. S. N. H., Vol. 

 3, 1884. p. 304, pi. 27, fig. 6, 7, 10. An insect from the anthrix- 

 cite coal measures at Wilkes-Barre, Luzerne Co., Pa , and Can- 

 nelton, Beaver Co., Pa. Lacoe's collection. — XIII? — See Ap- 

 pendix^ 



Mylacris heeri, Scudder. Mem. Bost. S. N. H. Vol. 3, 

 1879, p. 43, pi. 5, fig. 11. From the Coal measures of Sydney, 

 C. Breton.— X///.^ 



Mylacris lucifugum.* Scudder. Bost. S. N. H., Mem. 

 Vol. 3, 1879, p. 43, pi. 5, fig. 11. Another insect from Port 

 Griffith near Pittston, Pa. Lacoe's collection. — XIII — See 

 Appendix, 



* S. A. Miller's Cat. makes t\n^ feminine. 



