58 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



12523. Arcestes gabbi Meek. Cotypes. 



Triassic. Near Cottonwood Canyon, West Humboldt 

 Range, Nevada. 



Meek, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. I, 1877, p. 121, 

 pi. 10, figs. 6a. 



12531. Arcestes ? perplanus Meek. Cotypes. 



Upper Triassic. Buena Vista Canyon, South Fork West 

 Humboldt Range, Nevada. 



Meek, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. I, 1877, p. 120, 

 pi. 11, figs. 7a. 



27126. Archaeocaris vermiformis Meek. Cotypes. 



Waverly (Miss.). Near Danville, Kentucky. 

 Meek, Geol. Surv. Ohio, II, 1875, p. 321, pi. 18, fig. 7. 



8235. Archaeocidaris cratis White. Holotype. 



Upper Carboniferous. Confluence of Green and Grand 

 rivers, Utah. 



White, Twelfth Ann. Rept. U. S. Geol. Surv. Terr., Pt. I, 187S 

 (1883 i, p. 130, pi. 33, fig. 2a. 



8031. Archaeocidaris dininnii White. Cotype. 



Upper Carboniferous. Tecumseh, Nebraska. 



White, Proc. U. S. Nat. Mus., II, 1S80, p. 260, pi. I, figs. 13-15; 

 Twelfth Ann. Rept. U. S. Geol. Surv. Terr., 1878 (1883), Pt. 

 I, p. 131, pi. 35, figs. 6a-6c. 



8472. Archaeocidaris ornatus Newberry. Plesiotype. 



Upper Carboniferous. Ten miles west of Ojo del Oso, 

 near Fort Wingate, New Mexico. 



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

 p. 104, pi. 6, fig. 7a. 



35369. Archaeocidaris ourayensis Girty. Holotype. 



Hermosa ? I Upper Carb.). Ouray, Colorado. 



Girty, Prof. Pap. 16, U. S. Geol. Surv., 1903, p. 329, pi. 1, fig. 14. 



9449. Archaeocidaris triplex White. Cotypes. 



Upper Carboniferous. Near Taos, New Mexico. 



White, Rept. U. S. Geogr. Surv., W. 100th Merid., Ill, Suppl., 

 1881, p. 22, pi. 4, figs. 3a-3c. 



6599. Archaeocidaris? triserrata Meek. Cotypes. 



Upper Carboniferous. Near Omaha, Nebraska. 



Meek, Final Rept. U. S. Geol. Surv., Xebr. (Hayden), 1872, p. 

 151, pi. 1, figs. 6a-6e. 



8471. Archaeocidaris trudifer White. Cotypes. 



Red Wall (Upper Carb. ). Camp Apache, Navajo County, 

 Arizona. 



White, Prelim. Rept. U. S. Geogr. Surv., W. 100th Merid., 8 vo., 

 1S74. p. 17; Rept. U. S. Geogr. Surv., W. 100th Merid., IV, 

 Pt. I, 1S77, p. 104, pi. 6. figs. 8a. 8b. 



