286 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



38136. Gerarus vetus Scudder. Holotype. 



Upper Coal Measures. Mazon Creek, Grundy County, 

 Illinois. 



Scudder, Mem. Boston Soc. Nat. Hist., Ill, 1885, p. 344, pi. 31, 

 fig. 6; Foss. Insects N. America, I, 1890, p. 308, pi. 17, fig. 6. 



4195 1. Gerasaphes ulrichana Clarke. Holotype. 



Trenton (Ord. ). Covington, Kentucky. 



Clarke, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. 

 II, 1894, p. 710, figs. 14-16. 



37966. Geratarbus lacoei Scudder. Holotype. 



Upper Coal Measures. Mazon Creek, Grundy County, 

 Illinois. 



Scudder, Mem. Boston Soc. Nat. Hist., IV, 1890, p. 448, pi. 40, 

 fig. 11; Foss. Insects N. America, 1890, p. 424, pi. 32, fig. it. 



37965. Geratarbus scabrum Scudder. Holotype. 



Upper Coal Measures. Mazon Creek, Grundy County, 

 Illinois. 



Scudder, Mem. Boston Soc. Nat. Hist., IV, 1890, p. 44S, pi. 30, 

 fig. 5; Foss. Insects N. America, 1890, p. 430, pi. 31, fig. 5. 



21698. Gervillia longa Geinitz. Plesiotype. 



Permian. Godwin Creek, Baylor Count}-, Texas. 



White, Bull. No. 77, U. S. Geol. Surv., 1891, p. 29, pi. 4, fig. 2. 



7795. Gervillia montanaensis Meek. Cotypes. 



Jurassic. Near L/Ower Canyon of Yellowstone River, 

 Montana. 



White, Twelfth Ann. Rept. U. S. Geol. Surv. Terr., Pt. I, 1883, 

 P- 145, PL 37, ngs. ia, ib. 



8023. Gervillia mudgeana White. Cotypes., 



Mentor (Cret.). Saline County, Kansas. 



White, Proc. U. S. Nat. Mus., II, 1879, p. 295, pi. 5, figs. 3, 4; 

 Twelfth Ann. Rept. U. S. Geol. Surv. Terr., 1883, p. 16, pi. 

 14, figs- 3 a - b. 



22867. Gervillia propleura (Meek). Plesiotypes. 



Colorado (Cret.). Coalville, Utah and Huerfano Park, 

 Colorado. 



Stanton, Bull. No. 106, U. S. Geol. Surv. , 1893, p. 74, pi. 10, figs. 1-3. 



See Avicula (Pseudoptera) propleura, A. (P.) rhyto- 

 phora, and Pteria (Pseudopteria) propleura. 



7843. Gervillia recta Meek and Hayden.. Holotype and paratypes. 

 Fox Hills (Cret.). Deer Creek, near North Platte, 

 Wyoming. 



Meek and Havden, Proc. Acad. Nat. Sci. Phila., for 1861, p. 441. — 

 Meek, Rept. U. S. Geol. Surv. Terr., IX, 1876, p. 66, pi. 29, 

 figs, ia, id. 



