TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 421 



210. Myacites nebrascensis Meek and Hayden. Holotype. 



Jurassic. Southwest base of Black Hills, South Dakota. 



Meek and Hayden, Proc. Acad. Nat. Sci. Phila., for i860, p. 182; 

 Pal. Upper Mo., Smithsonian Cont. to Knowl., No. 172, XIV, 

 1864, p. 100, pi. 4, fig. 5. 



8061. Myacites subcompressus Meek. Plesiotypes. 



8180. Jurassic. Devils Slide, and near Lower Canyon of Yellow- 



stone, Montana. 



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

 • p. 151, pi. 3 8 > fi g s - 5a-e. 



200. Myacites subellipticus (Meek and Hayden\ Cotypes. 



Jurassic. Southwest base of Black Hills, South Dakota. 



Meek and Hayden, Pal. Upper Mo., Smithsonian Cont. to Knowl. 

 No. 172, XIV, 1864, p. 101, pi. 4, figs. 6a-c. 



See Panopea (Myacites) subelliptica. 



13386. Myacites (Pleuromya) weberensis Meek. Holotype. 



Jurassic. Weber Canyon, Wahsatch Range, Utah. 



Meek, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. I, 1877, p. 137, 

 pi. 12, figs. na. 



2526. Myalina aviculoides Meek and Hayden. Cotypes. 



3961. Permian. Cottonwood Creek, Kansas. 



Meek and Hayden, Proc. Acad. Nat. Sci. Phila., for i860, p. 184; 

 Pal. Upper Mo., Smithsonian Cont. to Knowl., No. 172, XIV, 

 1864, p. 51, pi. 2, figs. 8a-d. 



15227. Myalina aviculoides Meek and Hayden. Plesiotypes. 



Permian or Triassic Southeast of Salt Lake City, Utah. 



Hall and Whitfield, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. II, 

 1877, p. 275, pi. 6, fig. 8. 



21696. Myalina aviculoides Meek and Hayden. Plesiotype. 



Permian. Godwin Creek, Baylor County, Texas. 



White, Bull. No. 77, U. S. Geol. Surv., 1891, p. 28, pi. 2, fig. 12. 



14369. Myalina congeneris Walcott. Cotypes. 



Lower Carboniferous. Richmond Mountain, Eureka Dis- 

 trict, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 237, pi. 19, fig. 6; 

 pi. 22, fig. 10. 



35310. Myalina cuneiformis Gurley. Plesiotypes. 



3531 1. Weber and Hermosa ? (Upper Carb.). Ouray, and branch 



of Cement Creek, Crested Butte quadrangle, Colorado. 



Girty, Prof. Pap. No. 16, U. S. Geol. Surv., 1903, p. 420, pi. 8, 

 figs. 14-17. f 



35306. Myalina keokuk Worthen. Plesiotype. 



Ouray (Miss.). Near Cascade Creek, Engineer Mountain 

 quadrangle, Colorado. 

 Girty, Prof. Pap. No. 16, U. S. Geol. Surv., 1903, p. 309, pi. 1, fig. 12. 



